Pub Date : 2025-01-01DOI: 10.1016/j.mset.2025.01.001
Reno Pratiwi , Muhammad Ibadurrohman , Eniya Listiani Dewi , Ratnawati , Rike Yudianti , Saddam Husein , Slamet
This study aimed to enhance the effectiveness of the simultaneous combination of electrocoagulation and photocatalysis processes by modifying the configuration of the photocatalyst. A heterojunction mechanism was developed by integrating CdS with a photocatalyst using a TiO2 nanotube array (TNTA) [1]. This mechanism is designed to enhance photocatalytic efficiency by reducing electron-hole recombination. The successful synthesis of CdS/TNTA nanocomposite was confirmed using various characterization methods, including XRD, HRTEM, FESEM, UV–Vis DRS, PL, transient photocurrent, and XPS. The results showed that CdS/TNTA worked better than TNTA in a single photocatalysis process, achieving improved Ciprofloxacin (CIP) removal (7.9 % to 13.8 %) and hydrogen gas production (0.006 to 0.156 mmol/m2plate). Simultaneously operating electrocoagulation and photocatalysis systems in the respective optimized settings resulted in significant enhancements. Hydrogen gas yield increased by 44 % (from 443 to 636 mmol/m2 plate) compared to using only TNTA, while CIP removal improved from 79 % to 83 %. This study demonstrates that the synthesis of CdS/TNTA photocatalysts may be a promising approach to achieving high performance of hydrogen recovery while simultaneously removing CIP from wastewater.
{"title":"Development of CdS/TNTA nanocomposite to improve performance of simultaneous electrocoagulation-photocatalysis process for hydrogen production and ciprofloxacin elimination","authors":"Reno Pratiwi , Muhammad Ibadurrohman , Eniya Listiani Dewi , Ratnawati , Rike Yudianti , Saddam Husein , Slamet","doi":"10.1016/j.mset.2025.01.001","DOIUrl":"10.1016/j.mset.2025.01.001","url":null,"abstract":"<div><div>This study aimed to enhance the effectiveness of the simultaneous combination of electrocoagulation and photocatalysis processes by modifying the configuration of the photocatalyst. A heterojunction mechanism was developed by integrating CdS with a photocatalyst using<!--> <!-->a TiO<sub>2</sub> nanotube array (TNTA) <span><span>[1]</span></span>. This mechanism is designed to enhance photocatalytic efficiency by reducing electron-hole recombination. The successful synthesis of CdS/TNTA nanocomposite was confirmed using various characterization methods, including XRD, HRTEM, FESEM, UV–Vis DRS, PL, transient photocurrent, and XPS. The results showed that CdS/TNTA worked better than TNTA in a single photocatalysis process, achieving improved Ciprofloxacin (CIP) removal (7.9 % to 13.8 %) and hydrogen gas production (0.006 to 0.156 mmol/m<sup>2</sup>plate). Simultaneously operating electrocoagulation and photocatalysis systems in the respective optimized settings resulted in significant enhancements. Hydrogen gas yield increased by 44 % (from 443 to 636 mmol/m<sup>2</sup> plate) compared to using only TNTA, while CIP removal improved from 79 % to 83 %. This study demonstrates that the synthesis of CdS/TNTA photocatalysts may be a promising approach to achieving high performance of hydrogen recovery while simultaneously removing CIP from wastewater.</div></div>","PeriodicalId":18283,"journal":{"name":"Materials Science for Energy Technologies","volume":"8 ","pages":"Pages 121-130"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143156393","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
This research has investigated the viability of valorizing Areca or Betel palm-shells into activated carbon, to be applied as an electrode active material in supercapacitors. The palm-shells are an agricultural waste from betel-nut production, an important economic crop in several regions around the world. The conversion process mainly involves pulverization, ZnCl2-activation, and carbonization. The effect of carbonization temperatures – 500, 600, 700, and 800 °C, was studied on the properties of the activated carbon. Microstructural characterizations like BET, Raman, and XPS were carried out. All the activated samples are microporous, have a specific surface area >1,000 m2 g−1, and possess an intensity ratio of D-to-G band close to 1. More than 80 % of the atomic concentration of the samples is carbon; the C 1s bonds include C=C or sp2, C–C or sp3, C–(O,N), C=O, and O–C=O or π– π*. The activated carbon synthesized at 700 °C shows the most favorable properties for being used as the electrode in supercapacitors. Its electrochemical properties, evaluated by galvanostatic charge–discharge and cyclic voltammetry deliver the maximum specific capacitances of 144.48F·g−1 at 1 A·g−1 and 169.21F·g−1 20 mV·s−1, respectively. The supercapacitors do perform stably at long-term cycling with the capacitance retention (>98 %) and the coulombic efficiency at almost 100 % over 50,000 cycles. The betel-palm-shell carbon has a very comparable capacitive performance to other biomass-derived carbons with the respective maximum energy and powder densities of 7.63 Wh·kg−1 and 5,849.93 W·kg−1. Converting the betel-palm-shell waste, one of the common agricultural wastes in Asia, Oceania, Africa, or Latin America to activated carbon is a pathway of waste valorization as well as leads to a new business opportunity of producing carbon electrodes for an energy application of supercapacitors. This will further go towards a circular carbon economy, not only reducing the carbon footprint and other pollution caused by currently widely practiced incineration, but also creating a sustainable loop of material utilization.
{"title":"Highly porous activated carbon from betel palm shells as the prospective electrode for high-performance supercapacitors","authors":"Panuwat Torrarit , Sirilux Poompradub , Mahshid Mohammadifar , Prasit Pattananuwat , Theerthagiri Jayaraman , Yujeong Jeong , Narong Chanlek , Myong Yong Choi , Jitti Kasemchainan","doi":"10.1016/j.mset.2025.03.001","DOIUrl":"10.1016/j.mset.2025.03.001","url":null,"abstract":"<div><div>This research has investigated the viability of valorizing Areca or Betel palm-shells into activated carbon, to be applied as an electrode active material in supercapacitors. The palm-shells are an agricultural waste from betel-nut production, an important economic crop in several regions around the world. The conversion process mainly involves pulverization, ZnCl<sub>2</sub>-activation, and carbonization. The effect of carbonization temperatures – 500, 600, 700, and 800 °C, was studied on the properties of the activated carbon. Microstructural characterizations like BET, Raman, and XPS were carried out. All the activated samples are microporous, have a specific surface area >1,000 m<sup>2</sup> g<sup>−1</sup>, and possess an intensity ratio of D-to-G band close to 1. More than 80 % of the atomic concentration of the samples is carbon; the C 1s bonds include C=C or sp<sup>2</sup>, C–C or sp<sup>3</sup>, C–(O,N), C=O, and O–C=O or π– π*. The activated carbon synthesized at 700 °C shows the most favorable properties for being used as the electrode in supercapacitors. Its electrochemical properties, evaluated by galvanostatic charge–discharge and cyclic voltammetry deliver the maximum specific capacitances of 144.48F·g<sup>−1</sup> at 1 A·g<sup>−1</sup> and 169.21F·g<sup>−1</sup> 20 mV·s<sup>−1</sup>, respectively. The supercapacitors do perform stably at long-term cycling with the capacitance retention (>98 %) and the coulombic efficiency at almost 100 % over 50,000 cycles. The betel-palm-shell carbon has a very comparable capacitive performance to other biomass-derived carbons with the respective maximum energy and powder densities of 7.63 Wh·kg<sup>−1</sup> and 5,849.93 W·kg<sup>−1</sup>. Converting the betel-palm-shell waste, one of the common agricultural wastes in Asia, Oceania, Africa, or Latin America to activated carbon is a pathway of waste valorization as well as leads to a new business opportunity of producing carbon electrodes for an energy application of supercapacitors. This will further go towards a circular carbon economy, not only reducing the carbon footprint and other pollution caused by currently widely practiced incineration, but also creating a sustainable loop of material utilization.</div></div>","PeriodicalId":18283,"journal":{"name":"Materials Science for Energy Technologies","volume":"8 ","pages":"Pages 143-153"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143865027","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The implementation of titanium dioxide (TiO2) as a photocatalyst material in hydrogen (H2) evolution reaction (HER) has embarked renewed interest in the past decade. Rapid electron-hole pairs recombination and wide band gap of a photo-sensitive material of TiO2 are detrimental toward the targeted catalytical reaction. In this study, we present the rational design, fabrication, photocatalytic performance of TiO2-Cu/CuO/Cu2O heterostructures (CuTi) using viable chemical reduction method. The Z-scheme and S-scheme are succesfully generated across the TiO2/CuO/Cu2O interfaces, while the Schottky junction arises on the Cu perimeters. This is evidenced from the blue shifted about 0.3 eV of Cu 2p core level determined by using X-ray photoemission spectroscopy (XPS), in combination with the formation of inverse V-shape of the Mott-Schottky plots. In addition, we find that Cu/CuO/Cu2O facilitates photon absorption range up to the visible region. The multiple heterojunction and the large number of OHsurface enhanced charge carrier transfer are associated to the suppression of photoluminescence (PL) intensity, high surface hydroxyl (OHsurface) density in CuTi probed by XPS, and fast electron transfer based on the electrochemical measurements. The presence of OHsurface inhibits the recombination of electron. A significant H2 photogeneration rate enhancement is achieved when an optimized 5 wt% Cu/CuO/Cu2O concentration is used on TiO2 to achieve 7,157.19 μmol·g−1 (1,789.30 μmol·g−1·h−1). Based on this finding, zero emission energy innitiative could be materialized under multiple heterojunctions in photocatalytic process is beneficial for enhancing the H2 production.
{"title":"Synergetic effects of multiple junction and surface hydroxyl in Cu/CuO/Cu2O/TiO2 heterostructures towards highly efficient photocatalysts for hydrogen generation","authors":"Riki Subagyo , Garcelina Rizky Anindika , Afif Akmal Aufkani , Lei Zhang , Hosta Ardhyananta , R.Y. Perry Burhan , Zjahra Vianita Nugraheni , Syafsir Akhlus , Hasliza Bahruji , Didik Prasetyoko , Diana Vanda Wellia , Atthar Luqman Ivansyah , Arramel , Yuly Kusumawati","doi":"10.1016/j.mset.2025.02.001","DOIUrl":"10.1016/j.mset.2025.02.001","url":null,"abstract":"<div><div>The implementation of titanium dioxide (TiO<sub>2</sub>) as a photocatalyst material in hydrogen (H<sub>2</sub>) evolution reaction (HER) has embarked renewed interest in the past decade. Rapid electron-hole pairs recombination and wide band gap of a photo-sensitive material of TiO<sub>2</sub> are detrimental toward the targeted catalytical reaction. In this study, we present the rational design, fabrication, photocatalytic performance of TiO<sub>2</sub>-Cu/CuO/Cu<sub>2</sub>O heterostructures (CuTi) using viable chemical reduction method. The Z-scheme and S-scheme are succesfully generated across the TiO<sub>2</sub>/CuO/Cu<sub>2</sub>O interfaces, while the Schottky junction arises on the Cu perimeters. This is evidenced from the blue shifted about 0.3 eV of Cu 2p core level determined by using X-ray photoemission spectroscopy (XPS), in combination with the formation of inverse V-shape of the Mott-Schottky plots. In addition, we find that Cu/CuO/Cu<sub>2</sub>O facilitates photon absorption range up to the visible region. The multiple heterojunction and the large number of OH<sub>surface</sub> enhanced charge carrier transfer are associated to the suppression of photoluminescence (PL) intensity, high surface hydroxyl (OH<sub>surface</sub>) density in CuTi probed by XPS, and fast electron transfer based on the electrochemical measurements. The presence of OH<sub>surface</sub> inhibits the recombination of electron. A significant H<sub>2</sub> photogeneration rate enhancement is achieved when an optimized 5 wt% Cu/CuO/Cu<sub>2</sub>O concentration is used on TiO<sub>2</sub> to achieve 7,157.19 μmol·g<sup>−1</sup> (1,789.30 μmol·g<sup>−1</sup>·h<sup>−1</sup>). Based on this finding, zero emission energy innitiative could be materialized under multiple heterojunctions in photocatalytic process is beneficial for enhancing the H<sub>2</sub> production.</div></div>","PeriodicalId":18283,"journal":{"name":"Materials Science for Energy Technologies","volume":"8 ","pages":"Pages 131-142"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143578055","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Future alternatives for an electrode lithium borate-based glass–ceramic (GC) has been developed for rechargeable lithium-ion batteries. The composition of the GC is xNiO-(0.20-x)MnO2-0.80(Li2S:B2O3), where x varies from 0.10, 0.13, 0.15, and 0.16. The GC were fabricated using the melt-quenching technique. The nature of the GC was determined using XRD examinations. The SEM-EDS analysis indicates the presence along with the distribution of components in the plate glasses. The battery charge/discharge tests showed that the 0.16NiO-0.04MnO2-0.8(Li2S:B2O3) (0.16Ni-0.04Mn) glass-ceramics exhibited a potential range of 0.8–1.1 V and a discharge capacity of 70 mAh.g−1 during the first cycle. Additionally, these GC demonstrated excellent cycling stability for over 100 cycles. As the same time, electrical impedance spectroscopy (EIS) measurements showed that the Li diffusion coefficient in 0.16Ni-0.04Mn GC was found to be 0.34 × 10−10 and 0.75 × 10−11 cm2.s−1 for before and after cycling, which is smaller than 0.10Ni-0.10Mn. Synchrotron-based XANES highlighted the oxidation state of Ni2+, as well as the mixing of Mn2+/3+ and S−1. The addition of Ni and Mn into the lithium-sulfur borate glass system has improved its electrochemical characteristics, making it a very interesting and economically viable option for energy storage technology electrodes.
{"title":"Li-S-B Glass-Ceramics: A Novel electrode materials for energy storage technology","authors":"Jintara Padchasri , Sumeth Siriroj , Amorntep Montreeuppathum , Phakkhananan Pakawanit , Nattapol Laorodphan , Narong Chanlek , Yingyot Poo-arporn , Pinit Kidkhunthod","doi":"10.1016/j.mset.2024.11.002","DOIUrl":"10.1016/j.mset.2024.11.002","url":null,"abstract":"<div><div>Future alternatives for an electrode lithium borate-based glass–ceramic (GC) has been developed for rechargeable lithium-ion batteries. The composition of the GC is xNiO-(0.20-x)MnO<sub>2</sub>-0.80(Li<sub>2</sub>S:B<sub>2</sub>O<sub>3</sub>), where x varies from 0.10, 0.13, 0.15, and 0.16. The GC were fabricated using the melt-quenching technique. The nature of the GC was determined using XRD examinations. The SEM-EDS analysis indicates the presence along with the distribution of components in the plate glasses. The battery charge/discharge tests showed that the 0.16NiO-0.04MnO<sub>2</sub>-0.8(Li<sub>2</sub>S:B<sub>2</sub>O<sub>3</sub>) (0.16Ni-0.04Mn) glass-ceramics exhibited a potential range of 0.8–1.1 V and a discharge capacity of 70 mAh.g<sup>−1</sup> during the first cycle. Additionally, these GC demonstrated excellent cycling stability for over 100 cycles. As the same time, electrical impedance spectroscopy (EIS) measurements showed that the Li diffusion coefficient in 0.16Ni-0.04Mn GC was found to be 0.34 × 10<sup>−10</sup> and 0.75 × 10<sup>−11</sup> cm<sup>2</sup>.s<sup>−1</sup> for before and after cycling, which is smaller than 0.10Ni-0.10Mn. Synchrotron-based XANES highlighted the oxidation state of Ni<sup>2+</sup>, as well as the mixing of Mn<sup>2+/3+</sup> and S<sup>−1</sup>. The addition of Ni and Mn into the lithium-sulfur borate glass system has improved its electrochemical characteristics, making it a very interesting and economically viable option for energy storage technology electrodes.</div></div>","PeriodicalId":18283,"journal":{"name":"Materials Science for Energy Technologies","volume":"8 ","pages":"Pages 111-120"},"PeriodicalIF":0.0,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142721787","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-11-14DOI: 10.1016/j.mset.2024.11.001
Toyin Shittu , Aasif A. Dabbawala , Labeeb Ali , Abbas Khaleel , Muhammad Z. Iqbal , Dalaver H. Anjum , Kyriaki Polychronopoulou , Mohammednoor Altarawneh
The regulation of catalyst activity and selectivity using a reducible support for the industrially relevant hydrogenation of 1,3-butadiene to more valuable butene products was achieved. Supported palladium and nickel–palladium catalysts on ceria were prepared and characterized with hydrogen temperature programmed reduction (H2-TPR), hydrogen temperature programmed desorption (H2-TPD), X-ray photoelectron spectroscopy (XPS), high resolution transmission electron microscopy (HR-TEM), high-angle annular dark-field scanning transmission electron microscopy (HAADF-STEM), temperature programmed oxidation (TPO), energy dispersive spectroscopy (EDS), and N2 adsorption–desorption to examine their chemical and physical properties. Pathways guiding the reaction were determined using the density functional theory (DFT). H2-TPR confirmed that palladium oxide was reduced, and nickel oxide species strongly interacted with the CeO2 support. The Ce3+ concentration determined by XPS showed that all catalysts surface contained the Ce reduced state. The catalysts showed a similar BET surface area, with 4Pd–Ce presenting the lowest value due to particle aggregation, which was confirmed from the EDS mapping analysis. Butadiene conversion consistently increased with temperature (40 °C–120 °C) until full conversion was reached on all the Pd catalysts while the maximum conversion on the 4Ni-Ce catalyst was 88 % at 120 °C. Product distribution revealed that 4 % Pd content directed the products toward butane when 40 °C was exceeded. Constructed mechanisms by DFT calculations featured low reaction barriers for the involved surface hydrogenation steps, and thus, they accounted for the observed low temperature of the surface hydrogenation activity. Selective formation of 1-butene partially stemmed from its relatively weak binding to Ni sites in reference to Pd sites. The mapped-out mechanisms entailed a higher reaction barrier for the formation of 2-butene, in agreement with the experimental observation pertinent to its formation at higher temperatures when compared with that of 1-butene.
{"title":"Selective hydrogenation of 1,3-butadiene to butenes on ceria-supported Pd, Ni and PdNi catalysts: Combined experimental and DFT outlook","authors":"Toyin Shittu , Aasif A. Dabbawala , Labeeb Ali , Abbas Khaleel , Muhammad Z. Iqbal , Dalaver H. Anjum , Kyriaki Polychronopoulou , Mohammednoor Altarawneh","doi":"10.1016/j.mset.2024.11.001","DOIUrl":"10.1016/j.mset.2024.11.001","url":null,"abstract":"<div><div>The regulation of catalyst activity and selectivity using a reducible support for the industrially relevant hydrogenation of 1,3-butadiene to more valuable butene products was achieved. Supported palladium and nickel–palladium catalysts on ceria were prepared and characterized with hydrogen temperature programmed reduction (H<sub>2</sub>-TPR), hydrogen temperature programmed desorption (H<sub>2</sub>-TPD), X-ray photoelectron spectroscopy (XPS), high resolution transmission electron microscopy (HR-TEM), high-angle annular dark-field scanning transmission electron microscopy (HAADF-STEM), temperature programmed oxidation (TPO), energy dispersive spectroscopy (EDS), and N<sub>2</sub> adsorption–desorption to examine their chemical and physical properties. Pathways guiding the reaction were determined using the density functional theory (DFT). H<sub>2</sub>-TPR confirmed that palladium oxide was reduced, and nickel oxide species strongly interacted with the CeO<sub>2</sub> support. The Ce<sup>3+</sup> concentration determined by XPS showed that all catalysts surface contained the Ce reduced state. The catalysts showed a similar BET surface area, with 4Pd–Ce presenting the lowest value due to particle aggregation, which was confirmed from the EDS mapping analysis. Butadiene conversion consistently increased with temperature (40 °C–120 °C) until full conversion was reached on all the Pd catalysts while the maximum conversion on the 4Ni-Ce catalyst was 88 % at 120 °C. Product distribution revealed that 4 % Pd content directed the products toward butane when 40 °C was exceeded. Constructed mechanisms by DFT calculations featured low reaction barriers for the involved surface hydrogenation steps, and thus, they accounted for the observed low temperature of the surface hydrogenation activity. Selective formation of 1-butene partially stemmed from its relatively weak binding to Ni sites in reference to Pd sites. The mapped-out mechanisms entailed a higher reaction barrier for the formation of 2-butene, in agreement with the experimental observation pertinent to its formation at higher temperatures when compared with that of 1-butene.</div></div>","PeriodicalId":18283,"journal":{"name":"Materials Science for Energy Technologies","volume":"8 ","pages":"Pages 96-110"},"PeriodicalIF":0.0,"publicationDate":"2024-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142652258","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-10-17DOI: 10.1016/j.mset.2024.10.001
Asmaa R. Heiba , Mostafa M. Omran , Rabab M. Abou Shahba , Abdelghaffar S. Dhmees , Fatma A. Taher , Ehab El Sawy
The anticipated large contribution of renewable energy resources to the sector of energy production strongly motivated the development of energy storage technologies, of which supercapacitors have drawn a lot of attention. In this work, Lanthanum-Strontium-Manganese-oxide (LSMO) perovskite nanoparticles, graphene oxide nanoribbons (GONRs), and LSMO-GONRs composite were synthesized and tested as electrode materials for supercapacitor applications. The LSMO was synthesized using the co-precipitation/calcination method, while the GONRs were synthesized using the oxidative unzipping of multi-walled carbon nanotubes. The physical/chemical structures were studied using XRD, FT-IR, SEM, TEM, SAED, and XPS. In 1 M KOH, the LSMO-GONRs electrode exhibited a specific capacitance of 490F/g compared to 342F/g and 294F/g for GONRs and LSMO electrodes, respectively, at 1 A/g, showcasing a performance that is not just superior but truly impressive, to the different types of perovskite/carbon-based material composites. The fabricated asymmetric SC device of LSMO-GONRs//GONRs exhibited a potential window of 1.7 V, a specific capacitance of 92.3F/g, an energy density of 38 Wh/kg, and a power density of 860 W/kg at 1 A/g. Moreover, the LSMO-GONRs//GONRs device showed excellent capacity retention and Coulombic efficiency after 10,000 cycles at 10 A/g, revealing the promising employment of LSMO-GONRs composite as a highly stable material for supercapacitor applications.
{"title":"Compositing LaSrMnO3 perovskite and graphene oxide nanoribbons for highly stable asymmetric electrochemical supercapacitors","authors":"Asmaa R. Heiba , Mostafa M. Omran , Rabab M. Abou Shahba , Abdelghaffar S. Dhmees , Fatma A. Taher , Ehab El Sawy","doi":"10.1016/j.mset.2024.10.001","DOIUrl":"10.1016/j.mset.2024.10.001","url":null,"abstract":"<div><div>The anticipated large contribution of renewable energy resources to the sector of energy production strongly motivated the development of energy storage technologies, of which supercapacitors have drawn a lot of attention. In this work, Lanthanum-Strontium-Manganese-oxide (LSMO) perovskite nanoparticles, graphene oxide nanoribbons (GONRs), and LSMO-GONRs composite were synthesized and tested as electrode materials for supercapacitor applications. The LSMO was synthesized using the co-precipitation/calcination method, while the GONRs were synthesized using the oxidative unzipping of multi-walled carbon nanotubes. The physical/chemical structures were studied using XRD, FT-IR, SEM, TEM, SAED, and XPS. In 1 M KOH, the LSMO-GONRs electrode exhibited a specific capacitance of 490F/g compared to 342F/g and 294F/g for GONRs and LSMO electrodes, respectively, at 1 A/g, showcasing a performance that is not just superior but truly impressive, to the different types of perovskite/carbon-based material composites. The fabricated asymmetric SC device of LSMO-GONRs//GONRs exhibited a potential window of 1.7 V, a specific capacitance of 92.3F/g, an energy density of 38 Wh/kg, and a power density of 860 W/kg at 1 A/g. Moreover, the LSMO-GONRs//GONRs device showed excellent capacity retention and Coulombic efficiency after 10,000 cycles at 10 A/g, revealing the promising employment of LSMO-GONRs composite as a highly stable material for supercapacitor applications.</div></div>","PeriodicalId":18283,"journal":{"name":"Materials Science for Energy Technologies","volume":"8 ","pages":"Pages 82-95"},"PeriodicalIF":0.0,"publicationDate":"2024-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142526523","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-08-21DOI: 10.1016/j.mset.2024.08.001
A. Muhammad Afdhal Saputra , Marpongahtun , Andriayani , Diana Alemin Barus , Ronn Goei , Alfred Tok , Muhammad Ibadurrahman , H.T.S Risky Ramadhan , Muhammad Irvan Hasibuan , Ton Peijs , Saharman Gea
This study employs a cost-efficient method to create a pliable BC/rGO-NiCo-LDH electrode film on a bacterial cellulose base. X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), Raman spectroscopy, X-ray photoelectron spectroscopy (XPS), and scanning electron microscopy with energy-dispersive X-ray spectroscopy (SEM-EDX) analyses verified the incorporation of reduced graphene oxide (rGO) and nickel–cobalt layered double hydroxide (NiCo-LDH) into the bacterial cellulose structure. The BC/rGO-NiCo-LDH composite material exhibited high-temperature stability and achieved a specific capacitance of 311 F g−1 at a scan rate of 0.1 mV/s, surpassing that of earlier cellulose electrodes. The electrode film showed exceptional mechanical capabilities, displaying flexibility and load resistance without any structural damage. The film’s flexibility and lightweight properties were improved due to the low density of 0.656 g cm−3, which is a result of the nanoporous structure and intrinsic low density of rGO and cellulose. A retention ratio of 0.40 for storage modulus at a glass transition temperature of around 90°C demonstrated positive mechanical performance. This cost-effective and uncomplicated synthesis approach produced a BC/rGO-NiCo-LDH electrode with potential. The material possessed favourable mechanical and electrochemical characteristics, making it suitable for wearable electronics.
{"title":"Facile synthesis and electrochemical performance of bacterial cellulose/reduced graphene oxide/NiCo-layered double hydroxide composite film for self-standing supercapacitor electrode","authors":"A. Muhammad Afdhal Saputra , Marpongahtun , Andriayani , Diana Alemin Barus , Ronn Goei , Alfred Tok , Muhammad Ibadurrahman , H.T.S Risky Ramadhan , Muhammad Irvan Hasibuan , Ton Peijs , Saharman Gea","doi":"10.1016/j.mset.2024.08.001","DOIUrl":"10.1016/j.mset.2024.08.001","url":null,"abstract":"<div><p>This study employs a cost-efficient method to create a pliable BC/rGO-NiCo-LDH electrode film on a bacterial cellulose base. X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), Raman spectroscopy, X-ray photoelectron spectroscopy (XPS), and scanning electron microscopy with energy-dispersive X-ray spectroscopy (SEM-EDX) analyses verified the incorporation of reduced graphene oxide (rGO) and nickel–cobalt layered double hydroxide (NiCo-LDH) into the bacterial cellulose structure. The BC/rGO-NiCo-LDH composite material exhibited high-temperature stability and achieved a specific capacitance of 311 F g<sup>−1</sup> at a scan rate of 0.1 mV/s, surpassing that of earlier cellulose electrodes. The electrode film showed exceptional mechanical capabilities, displaying flexibility and load resistance without any structural damage. The film’s flexibility and lightweight properties were improved due to the low density of 0.656 g cm<sup>−3</sup>, which is a result of the nanoporous structure and intrinsic low density of rGO and cellulose. A retention ratio of 0.40 for storage modulus at a glass transition temperature of around 90°C demonstrated positive mechanical performance. This cost-effective and uncomplicated synthesis approach produced a BC/rGO-NiCo-LDH electrode with potential. The material possessed favourable mechanical and electrochemical characteristics, making it suitable for wearable electronics.</p></div>","PeriodicalId":18283,"journal":{"name":"Materials Science for Energy Technologies","volume":"8 ","pages":"Pages 66-81"},"PeriodicalIF":0.0,"publicationDate":"2024-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S258929912400017X/pdfft?md5=fd04eadb0ba29e0223deec7e4f851883&pid=1-s2.0-S258929912400017X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142021480","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-07-25DOI: 10.1016/j.mset.2024.07.006
Nurettin Sezer , Sertac Bayhan , Ugur Fesli , Antonio Sanfilippo
Hydrogen has attracted growing research interest due to its exceptionally high energy per mass content and being a clean energy carrier, unlike the widely used hydrocarbon fuels. With the possibility of long-term energy storage and re-electrification, hydrogen promises to promote the effective utilization of renewable and sustainable energy resources. Clean hydrogen can be produced through a renewable-powered water electrolysis process. Although alkaline water electrolysis is currently the mature and commercially available electrolysis technology for hydrogen production, it has several shortcomings that hinder its integration with intermittent and fluctuating renewable energy sources. The proton exchange membrane water electrolysis (PEMWE) technology has been developed to offer high voltage efficiencies at high current densities. Besides, PEMWE cells are characterized by a fast system response to fluctuating renewable power, enabling operations at broader partial power load ranges while consistently delivering high-purity hydrogen with low ohmic losses. Recently, much effort has been devoted to improving the efficiency, performance, durability, and economy of PEMWE cells. The research activities in this context include investigations of different cell component materials, protective coatings, and material characterizations, as well as the synthesis and analysis of new electrocatalysts for enhanced electrochemical activity and stability with minimized use of noble metals. Further, many modeling studies have been reported to analyze cell performance considering cell electrochemistry, overvoltage, and thermodynamics. Thus, it is imperative to review and compile recent research studies covering multiple aspects of PEMWE cells in one literature to present advancements and limitations of this field. This article offers a comprehensive review of the state-of-the-art of PEMWE cells. It compiles recent research on each PEMWE cell component and discusses how the characteristics of these components affect the overall cell performance. In addition, the electrochemical activity and stability of various catalyst materials are reviewed. Further, the thermodynamics and electrochemistry of electrolytic water splitting are described, and inherent cell overvoltage are elucidated. The available literature on PEMWE cell modeling, aimed at analyzing the performance of PEMWE cells, is compiled. Overall, this article provides the advancements in cell components, materials, electrocatalysts, and modeling research for PEMWE to promote the effective utilization of renewable but intermittent and fluctuating energy in the pursuit of a seamless transition to clean energy.
{"title":"A comprehensive review of the state-of-the-art of proton exchange membrane water electrolysis","authors":"Nurettin Sezer , Sertac Bayhan , Ugur Fesli , Antonio Sanfilippo","doi":"10.1016/j.mset.2024.07.006","DOIUrl":"10.1016/j.mset.2024.07.006","url":null,"abstract":"<div><p>Hydrogen has attracted growing research interest due to its exceptionally high energy per mass content and being a clean energy carrier, unlike the widely used hydrocarbon fuels. With the possibility of long-term energy storage and re-electrification, hydrogen promises to promote the effective utilization of renewable and sustainable energy resources. Clean hydrogen can be produced through a renewable-powered water electrolysis process. Although alkaline water electrolysis is currently the mature and commercially available electrolysis technology for hydrogen production, it has several shortcomings that hinder its integration with intermittent and fluctuating renewable energy sources. The proton exchange membrane water electrolysis (PEMWE) technology has been developed to offer high voltage efficiencies at high current densities. Besides, PEMWE cells are characterized by a fast system response to fluctuating renewable power, enabling operations at broader partial power load ranges while consistently delivering high-purity hydrogen with low ohmic losses. Recently, much effort has been devoted to improving the efficiency, performance, durability, and economy of PEMWE cells. The research activities in this context include investigations of different cell component materials, protective coatings, and material characterizations, as well as the synthesis and analysis of new electrocatalysts for enhanced electrochemical activity and stability with minimized use of noble metals. Further, many modeling studies have been reported to analyze cell performance considering cell electrochemistry, overvoltage, and thermodynamics. Thus, it is imperative to review and compile recent research studies covering multiple aspects of PEMWE cells in one literature to present advancements and limitations of this field. This article offers a comprehensive review of the state-of-the-art of PEMWE cells. It compiles recent research on each PEMWE cell component and discusses how the characteristics of these components affect the overall cell performance. In addition, the electrochemical activity and stability of various catalyst materials are reviewed. Further, the thermodynamics and electrochemistry of electrolytic water splitting are described, and inherent cell overvoltage are elucidated. The available literature on PEMWE cell modeling, aimed at analyzing the performance of PEMWE cells, is compiled. Overall, this article provides the advancements in cell components, materials, electrocatalysts, and modeling research for PEMWE to promote the effective utilization of renewable but intermittent and fluctuating energy in the pursuit of a seamless transition to clean energy.</p></div>","PeriodicalId":18283,"journal":{"name":"Materials Science for Energy Technologies","volume":"8 ","pages":"Pages 44-65"},"PeriodicalIF":0.0,"publicationDate":"2024-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2589299124000168/pdfft?md5=9a4aa9d84edb6ff44dfb3c1e41064537&pid=1-s2.0-S2589299124000168-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141847120","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Carbon nanofiber (CNF) derived from carbonization of bacterial cellulose (BC), with a unique three-dimensional porous nanostructure, has received significant interest in electrochemical applications. In this study, CNF samples were physically activated in CO2 at different temperatures and durations. Raman spectroscopy and FTIR analysis showed that CO2 activation caused hexagonal lattice defects, disorder, and oxygen-related functional groups in an amorphous carbon structure. CNF surface morphology changed after physical activation, reducing fiber diameter to 55 nm and introducing mesopores. Through activation temperature and time adjustments, surface area (870.1 m2/g) and micropore surface area (535.6 m2/g) and pore volume (0.2148 cm3/g) increased. EDX elemental analysis showed that activated CNF had a carbon concentration of > 90 %, while XPS analysis showed surface functional groups like C-C (sp2) and C-C (sp3) hybridization, which could improve electrolyte ion adsorption and accessibility. Electrochemical properties improved owing to CO2 activation. The optimal activation condition of 800 ℃ for 60 min resulted in the highest specific area capacitance of 552 mF cm−2 at 1 mA cm−2. This activated CNF electrode retained capacitance nearly unchanged up to 3,000 cycles. It also achieved the highest energy density of 76.7 mWh cm−2 at 500 mW cm−2. This study demonstrates the efficacy of CO2 physical activation for enhancing the electrochemical properties of CNF electrodes. The findings also highlight the importance of tailoring activation conditions, providing valuable insights for the design of advanced energy storage materials.
{"title":"Enhancing electrochemical properties of bacterial cellulose-derived carbon nanofibers through physical CO2 activation","authors":"Likkhasit Wannasen , Narong Chanlek , Wiyada Mongkolthanaruk , Sujittra Daengsakul , Supree Pinitsoontorn","doi":"10.1016/j.mset.2024.07.005","DOIUrl":"10.1016/j.mset.2024.07.005","url":null,"abstract":"<div><p>Carbon nanofiber (CNF) derived from carbonization of bacterial cellulose (BC), with a unique three-dimensional porous nanostructure, has received significant interest in electrochemical applications. In this study, CNF samples were physically activated in CO<sub>2</sub> at different temperatures and durations. Raman spectroscopy and FTIR analysis showed that CO<sub>2</sub> activation caused hexagonal lattice defects, disorder, and oxygen-related functional groups in an amorphous carbon structure. CNF surface morphology changed after physical activation, reducing fiber diameter to 55 nm and introducing mesopores. Through activation temperature and time adjustments, surface area (870.1 m<sup>2</sup>/g) and micropore surface area (535.6 m<sup>2</sup>/g) and pore volume (0.2148 cm<sup>3</sup>/g) increased. EDX elemental analysis showed that activated CNF had a carbon concentration of > 90 %, while XPS analysis showed surface functional groups like C-C (sp<sup>2</sup>) and C-C (sp<sup>3</sup>) hybridization, which could improve electrolyte ion adsorption and accessibility. Electrochemical properties improved owing to CO<sub>2</sub> activation. The optimal activation condition of 800 ℃ for 60 min resulted in the highest specific area capacitance of 552 mF cm<sup>−2</sup> at 1 mA cm<sup>−2</sup>. This activated CNF electrode retained capacitance nearly unchanged up to 3,000 cycles. It also achieved the highest energy density of 76.7 mWh cm<sup>−2</sup> at 500 mW cm<sup>−2</sup>. This study demonstrates the efficacy of CO<sub>2</sub> physical activation for enhancing the electrochemical properties of CNF electrodes. The findings also highlight the importance of tailoring activation conditions, providing valuable insights for the design of advanced energy storage materials.</p></div>","PeriodicalId":18283,"journal":{"name":"Materials Science for Energy Technologies","volume":"8 ","pages":"Pages 13-23"},"PeriodicalIF":0.0,"publicationDate":"2024-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2589299124000156/pdfft?md5=1d1d74f6205ed5e1410201dcc372bd19&pid=1-s2.0-S2589299124000156-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141850805","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-07-14DOI: 10.1016/j.mset.2024.07.003
Firman Ridwan , Dandi Agusta , Muhammad Akbar Husin , Dahyunir Dahlan
Cement manufacturing presents substantial environmental challenges due to the volume of waste generated, including cement ash. Therefore, it is crucial to discover novel methods to utilize cement waste effectively. This study aimed to examine the impact of different concentrations of cement ash (1, 1.5, 2, and 2.5 g) on the conductivity of PVA/TEOS/HCl (PTH) gel electrolyte materials. The primary goal was to determine the ideal concentration of cement ash that would yield maximum conductivity. The research findings demonstrated that the PTH2.5CA sample attained the greatest conductivity of 2.78 mS/cm when adding 2.5 g of cement ash. In addition, this material exhibits a capacity of 0.354 mAh, a specific capacity of 0.12826 mAh/g, and a density capacity of 0.11813 mAh/cm2. The power and power densities were measured as 6.48 mW/cm2 and 25.94 mW, respectively. These findings offer promising prospects for implementing sustainable practices in the industry and highlight the viability of utilizing cement waste as a significant element in battery membrane materials. This technique addresses environmental issues related to cement waste and contributes to advancing a more eco-friendly waste management system.
{"title":"Evaluation of the addition of cement ash to the PVA/TEOS/HCl gel electrolyte on the performance of aluminium air batteries","authors":"Firman Ridwan , Dandi Agusta , Muhammad Akbar Husin , Dahyunir Dahlan","doi":"10.1016/j.mset.2024.07.003","DOIUrl":"10.1016/j.mset.2024.07.003","url":null,"abstract":"<div><p>Cement manufacturing presents substantial environmental challenges due to the volume of waste generated, including cement ash. Therefore, it is crucial to discover novel methods to utilize cement waste effectively. This study aimed to examine the impact of different concentrations of cement ash (1, 1.5, 2, and 2.5 g) on the conductivity of PVA/TEOS/HCl (PTH) gel electrolyte materials. The primary goal was to determine the ideal concentration of cement ash that would yield maximum conductivity. The research findings demonstrated that the PTH2.5CA sample attained the greatest conductivity of 2.78 mS/cm when adding 2.5 g of cement ash. In addition, this material exhibits a capacity of 0.354 mAh, a specific capacity of 0.12826 mAh/g, and a density capacity of 0.11813 mAh/cm<sup>2</sup>. The power and power densities were measured as 6.48 mW/cm<sup>2</sup> and 25.94 mW, respectively. These findings offer promising prospects for implementing sustainable practices in the industry and highlight the viability of utilizing cement waste as a significant element in battery membrane materials. This technique addresses environmental issues related to cement waste and contributes to advancing a more eco-friendly waste management system.</p></div>","PeriodicalId":18283,"journal":{"name":"Materials Science for Energy Technologies","volume":"8 ","pages":"Pages 24-31"},"PeriodicalIF":0.0,"publicationDate":"2024-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2589299124000132/pdfft?md5=7730edd5e95b308bd1147aa4fa41f411&pid=1-s2.0-S2589299124000132-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141698958","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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