Materials Science and Engineering: B最新文献

英文中文

Numerical insights into MXene-integrated perovskite solar cells with compositionally engineered CsSnI3-xBrx absorbers

IF 3.9 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Science and Engineering: B

Pub Date : 2025-03-29 DOI: 10.1016/j.mseb.2025.118238

Navdeep Kaur, Jaya Madan, Rahul Pandey

All-inorganic perovskite solar cells (PSCs) offer superior stability compared to their hybrid counterparts, making them a promising candidate for high-performance photovoltaics. This study enhances photovoltaic (PV) performance by employing a linearly graded CsSnI_3-xBr_x absorber layer (x = 0 to 3) while eliminating toxic lead. The proposed design incorporates 2D MXene electrodes, improving charge transport without the need for electron/hole transport (ETL/HTL) layers. In this work, the distinct 21 MXenes with different termination functions are incorporated and their compatibility has been verified with CsSnI_3-xBr_x. The simulation has been performed in SCAPS-1D, under one sun illumination at 300 K temperature. The results indicated that using MXene with work function values ranging from 3.56 eV to 4.50 eV for the top electrode and from 5.36 eV to 5.65 eV for the bottom electrode resulted in the highest power conversion efficiency (PCE) of 24.18 %. Further optimization of absorber thickness, bulk defects, and acceptor doping density leads to an enhanced PCE of 29.30 % at 1000 nm thickness and a bulk defect density of 10¹² cm⁻³, with a corresponding acceptor doping density of 10¹⁵ cm⁻³. Additionally, a transparency analysis of the top electrode has been performed to evaluate its impact on PV performance. This ETL-/HTL-free, highly conductive PSC design paves the way for future advancements in next-generation photovoltaics.

{"title":"Numerical insights into MXene-integrated perovskite solar cells with compositionally engineered CsSnI3-xBrx absorbers","authors":"Navdeep Kaur, Jaya Madan, Rahul Pandey","doi":"10.1016/j.mseb.2025.118238","DOIUrl":"10.1016/j.mseb.2025.118238","url":null,"abstract":"<div><div>All-inorganic perovskite solar cells (PSCs) offer superior stability compared to their hybrid counterparts, making them a promising candidate for high-performance photovoltaics. This study enhances photovoltaic (PV) performance by employing a linearly graded CsSnI<sub>3-x</sub>Br<sub>x</sub> absorber layer (x = 0 to 3) while eliminating toxic lead. The proposed design incorporates 2D MXene electrodes, improving charge transport without the need for electron/hole transport (ETL/HTL) layers. In this work, the distinct 21 MXenes with different termination functions are incorporated and their compatibility has been verified with CsSnI<sub>3-x</sub>Br<sub>x</sub>. The simulation has been performed in SCAPS-1D, under one sun illumination at 300 K temperature. The results indicated that using MXene with work function values ranging from 3.56 eV to 4.50 eV for the top electrode and from 5.36 eV to 5.65 eV for the bottom electrode resulted in the highest power conversion efficiency (PCE) of 24.18 %. Further optimization of absorber thickness, bulk defects, and acceptor doping density leads to an enhanced PCE of 29.30 % at 1000 nm thickness and a bulk defect density of 10<sup>12</sup> cm<sup>−3</sup>, with a corresponding acceptor doping density of 10<sup>15</sup> cm<sup>−3</sup>. Additionally, a transparency analysis of the top electrode has been performed to evaluate its impact on PV performance. This ETL-/HTL-free, highly conductive PSC design paves the way for future advancements in next-generation photovoltaics.</div></div>","PeriodicalId":18233,"journal":{"name":"Materials Science and Engineering: B","volume":"318 ","pages":"Article 118238"},"PeriodicalIF":3.9,"publicationDate":"2025-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143725527","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Advancing direct ethanol metal supported fuel cells with catalytic layer

IF 3.9 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Science and Engineering: B

Pub Date : 2025-03-29 DOI: 10.1016/j.mseb.2025.118259

S.G.M. Carvalho , F.N. Tabuti , E.I. Santiago , R. Abe , R.M. Guimarães , Y. Miura , Y. Fukuyama , F.C. Fonseca

Fuel cells are efficient power sources to play a role in the urgent energy transition. Direct ethanol fuel cells may boost the application of solid oxide fuel cell because ethanol is an efficient, sustainable, and readily available fuel. Metal supported solid oxide fuel cells provide the necessary mechanical properties to allow complex applications such as vehicles. Thus, the combination of a renewable fuel and a robust fuel cell may be a perfect combination for widespread decarbonization of transportation, facilitated by an economic viable and energetic efficient liquid fuel. However, several challenges remain to prolong the durability of such devices running on ethanol. We report on the significant improvement of the metal supported fuel cell stability operating at relatively low temperature (700 °C) with ethanol by adding a porous active catalytic layer with controlled microstructure using processing parameters compatible with the metal-supported solid oxide fuel cell technology.

引用次数: 0

Synthesis and NO2 sensing characteristics of Mg-functionalized VO2(M) Nanorods

IF 3.9 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Science and Engineering: B

Pub Date : 2025-03-28 DOI: 10.1016/j.mseb.2025.118232

B.M. Mabakachaba , N. Numan , K. Shingange , I.G. Madiba , M.R. Letsoalo , Z.M. Khumalo , M. Nkosi , G.H. Mhlongo , S. Halindintwali , M. Maaza

Herein, we report the synthesis , characterization, and potential

{NO}_{2}

gas sensing application of pristine and Mg-doped

{VO}_{2}

(M) nanorods sensors. The gas sensing properties of both sensors were tested for various analytes, i.e., CO,

{CH}_{4}

H_{2}

{NO}_{2}

{SO}_{2}

while varying operating temperatures. The sensors demonstrated substantial sensing performance at working temperature of about

120 ° C

, where

{VO}_{2}

-Mg outperformed the pristine sensor with a response value of about 59.3%. At ambient temperature (

\sim 25 ° C

), the response values for pristine and

{VO}_{2}

-Mg were 3.29% and 6.35%, respectively. The Mg-dopant’s catalytic activity alters the electrical characteristics and adsorbed oxygen species on the sensor surface, leading to improved sensing performance.

{VO}_{2}

(M)-based sensor‘s sensing mechanism fits the Freundlich isotherm model, thus making the sensors suitable for detecting

{NO}_{2}

at high and ambient temperatures.

{"title":"Synthesis and NO2 sensing characteristics of Mg-functionalized VO2(M) Nanorods","authors":"B.M. Mabakachaba , N. Numan , K. Shingange , I.G. Madiba , M.R. Letsoalo , Z.M. Khumalo , M. Nkosi , G.H. Mhlongo , S. Halindintwali , M. Maaza","doi":"10.1016/j.mseb.2025.118232","DOIUrl":"10.1016/j.mseb.2025.118232","url":null,"abstract":"<div><div>Herein, we report the synthesis , characterization, and potential <span><math><msub><mrow><mi>NO</mi></mrow><mrow><mn>2</mn></mrow></msub></math></span> gas sensing application of pristine and Mg-doped <span><math><msub><mrow><mi>VO</mi></mrow><mrow><mn>2</mn></mrow></msub></math></span>(M) nanorods sensors. The gas sensing properties of both sensors were tested for various analytes, i.e., CO, <span><math><msub><mrow><mi>CH</mi></mrow><mrow><mn>4</mn></mrow></msub></math></span>, <span><math><msub><mrow><mi>H</mi></mrow><mrow><mn>2</mn></mrow></msub></math></span>S, <span><math><msub><mrow><mi>NO</mi></mrow><mrow><mn>2</mn></mrow></msub></math></span>, <span><math><msub><mrow><mi>SO</mi></mrow><mrow><mn>2</mn></mrow></msub></math></span> while varying operating temperatures. The sensors demonstrated substantial sensing performance at working temperature of about <span><math><mrow><mn>120</mn><mspace></mspace><mo>°</mo><mi>C</mi></mrow></math></span>, where <span><math><msub><mrow><mi>VO</mi></mrow><mrow><mn>2</mn></mrow></msub></math></span>-Mg outperformed the pristine sensor with a response value of about 59.3%. At ambient temperature (<span><math><mrow><mo>∼</mo><mn>25</mn><mspace></mspace><mo>°</mo><mi>C</mi></mrow></math></span>), the response values for pristine and <span><math><msub><mrow><mi>VO</mi></mrow><mrow><mn>2</mn></mrow></msub></math></span>-Mg were 3.29% and 6.35%, respectively. The Mg-dopant’s catalytic activity alters the electrical characteristics and adsorbed oxygen species on the sensor surface, leading to improved sensing performance. <span><math><msub><mrow><mi>VO</mi></mrow><mrow><mn>2</mn></mrow></msub></math></span>(M)-based sensor‘s sensing mechanism fits the Freundlich isotherm model, thus making the sensors suitable for detecting <span><math><msub><mrow><mi>NO</mi></mrow><mrow><mn>2</mn></mrow></msub></math></span> at high and ambient temperatures.</div></div>","PeriodicalId":18233,"journal":{"name":"Materials Science and Engineering: B","volume":"318 ","pages":"Article 118232"},"PeriodicalIF":3.9,"publicationDate":"2025-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143715548","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

DFT-based comparative study of mechanical, electro-optic, and transport response of halide double perovskites Na2MAlZ6 (M = Ag, Cu; Z = Br, I) for green energy applications

IF 3.9 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Science and Engineering: B

Pub Date : 2025-03-27 DOI: 10.1016/j.mseb.2025.118250

Ahmad Ayyaz , Q. Mahmood , Saqlain A. Dar , Maryam Touqir , Lamiaa Galal Amin , Imed Boukhris , S. Bouzgarrou

A comparative exploration of mechanical, electronic, optical, and transport characteristics of the double perovskites Na₂MAlZ₆ (M = Ag, Cu; Z = Br, I) has been carried out. The optimized structure, tolerance factor, and formation energy analysis confirmed the stability. The ab initio molecular dynamics (AIMD) also verified the dynamic stability of Na₂MAlZ₆. The study of elastic aspects, Pugh’s ratio, and Poisson’s ratio is conducted to verify the structural stability under pressure and the characteristics of materials. The observed mechanical characteristics validate the presence of flexibility, durability, asymmetry, and an escalated melting temperature. The studied materials are mechanically stable and ductile. The analysis of electronic aspects revealed a direct band gap of 2.62 eV for Na₂AgAlBr₆, 1.30 eV for Na₂AgAlI₆, 1.15 eV for Na₂CuAlBr₆, and 0.56 eV for Na₂CuAlI₆. The Kramer-Kronig relationship is employed to assess the optical attributes of materials that demonstrate significant absorption over the investigated spectrum. The absorption, reflection, and loss of incident photons within materials enable their application in photovoltaic systems and optoelectronic technologies. The Boltzmann semi-classical concept is used to compute thermoelectric characteristics. These materials have significant promise for thermal energy conservation implications because of their elevated ZT values. Therefore, the outcomes of current work theoretically justify that these compounds are very suitable for efficiently harvesting renewable energy.

{"title":"DFT-based comparative study of mechanical, electro-optic, and transport response of halide double perovskites Na2MAlZ6 (M = Ag, Cu; Z = Br, I) for green energy applications","authors":"Ahmad Ayyaz , Q. Mahmood , Saqlain A. Dar , Maryam Touqir , Lamiaa Galal Amin , Imed Boukhris , S. Bouzgarrou","doi":"10.1016/j.mseb.2025.118250","DOIUrl":"10.1016/j.mseb.2025.118250","url":null,"abstract":"<div><div>A comparative exploration of mechanical, electronic, optical, and transport characteristics of the double perovskites Na<sub>2</sub>MAlZ<sub>6</sub> (M = Ag, Cu; Z = Br, I) has been carried out. The optimized structure, tolerance factor, and formation energy analysis confirmed the stability. The ab initio molecular dynamics (AIMD) also verified the dynamic stability of Na<sub>2</sub>MAlZ<sub>6</sub>. The study of elastic aspects, Pugh’s ratio, and Poisson’s ratio is conducted to verify the structural stability under pressure and the characteristics of materials. The observed mechanical characteristics validate the presence of flexibility, durability, asymmetry, and an escalated melting temperature. The studied materials are mechanically stable and ductile. The analysis of electronic aspects revealed a direct band gap of 2.62 eV for Na<sub>2</sub>AgAlBr<sub>6</sub>, 1.30 eV for Na<sub>2</sub>AgAlI<sub>6</sub>, 1.15 eV for Na<sub>2</sub>CuAlBr<sub>6</sub>, and 0.56 eV for Na<sub>2</sub>CuAlI<sub>6</sub>. The Kramer-Kronig relationship is employed to assess the optical attributes of materials that demonstrate significant absorption over the investigated spectrum. The absorption, reflection, and loss of incident photons within materials enable their application in photovoltaic systems and optoelectronic technologies. The Boltzmann semi-classical concept is used to compute thermoelectric characteristics. These materials have significant promise for thermal energy conservation implications because of their elevated ZT values. Therefore, the outcomes of current work theoretically justify that these compounds are very suitable for efficiently harvesting renewable energy.</div></div>","PeriodicalId":18233,"journal":{"name":"Materials Science and Engineering: B","volume":"317 ","pages":"Article 118250"},"PeriodicalIF":3.9,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143715656","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Green synthesized silver nanoparticles and PVA composite films showing enhanced protein adsorption, conductivity and dielectric permittivity: Suitable candidate for electronic and biomedical applications

IF 3.9 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Science and Engineering: B

Pub Date : 2025-03-27 DOI: 10.1016/j.mseb.2025.118221

Biswadeep Chaudhuri , S Ghosh , BN Mondal

Cinnamon bark extract (CBE) derived silver nanoparticles (AgNs) and PVA have been used to prepare CBE-PVA-AgNs films by solution casting method. X-Ray diffraction (XRD) studies confirmed the enhancement of crystallinity and silver peaks appeared around 38.12° and 44.41°. Small shift of the silver peak (∼ 2°) in the composite film indicated interaction of AgNs and the PVA. Scanning electron microscope study specified silver grain size varying from 30- 50 nm.The FTIR study approves the complex interaction of the AgNs with the PVA. The UV–visible spectrum showed the presence of silver peak around 430 nm. Enhanced protein adsorption indicated increased biocompatibility of the films which is important for their biomedical applications. Frequency (0.0–10.0 kHz) dependent film conductivity (σ) and dielectric permittivity (ε) also increased largely showing low dielectric loss factor (tan δ < 1.0). The films exhibiting multifunctional properties are suitable for their applications in electronic devices, optoelectronics and packaging industries.

{"title":"Green synthesized silver nanoparticles and PVA composite films showing enhanced protein adsorption, conductivity and dielectric permittivity: Suitable candidate for electronic and biomedical applications","authors":"Biswadeep Chaudhuri , S Ghosh , BN Mondal","doi":"10.1016/j.mseb.2025.118221","DOIUrl":"10.1016/j.mseb.2025.118221","url":null,"abstract":"<div><div>Cinnamon bark extract (CBE) derived silver nanoparticles (AgNs) and PVA have been used to prepare CBE-PVA-AgNs films by solution casting method. X-Ray diffraction (XRD) studies confirmed the enhancement of crystallinity and silver peaks appeared around 38.12° and 44.41°. Small shift of the silver peak (∼ 2°) in the composite film indicated interaction of AgNs and the PVA. Scanning electron microscope study specified silver grain size varying from 30- 50 nm.The FTIR study approves the complex interaction of the AgNs with the PVA. The UV–visible spectrum showed the presence of silver peak around 430 nm. Enhanced protein adsorption indicated increased biocompatibility of the films which is important for their biomedical applications. Frequency (0.0–10.0 kHz) dependent film conductivity (σ) and dielectric permittivity (ε) also increased largely showing low dielectric loss factor (tan δ < 1.0). The films exhibiting multifunctional properties are suitable for their applications in electronic devices, optoelectronics and packaging industries.</div></div>","PeriodicalId":18233,"journal":{"name":"Materials Science and Engineering: B","volume":"317 ","pages":"Article 118221"},"PeriodicalIF":3.9,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143715655","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Synergistic photocatalytic degradation of multiple class of organic pollutants using GO-TiO2-WO3 nanocomposite

IF 3.9 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Science and Engineering: B

Pub Date : 2025-03-27 DOI: 10.1016/j.mseb.2025.118241

Deepika Yadav , Navita Sharma , Pratibha Sharma , Preeti , Anirban Das , Pooja Rawat , Sudip Majumder , Chandra Mohan Srivastava

The photocatalytic materials and process optimization hold significant promise for the sustainable treatment of effluents present in wastewater, contributing to environmental protection and the conservation of water resources. In this research work, GO based ternary nanocomposite was synthesized using the ultrasonication method and used for the photocatalytic degradation of dyes, antibiotics, and organic compounds. Powder X-ray Diffraction (PXRD), Energy Dispersive Spectroscopy (EDS), High-Resolution Transmission Electron Microscope (HR-TEM), Brunauer-Emmett & Teller (BET) method, X-ray photoelectron spectroscopy (XPS), Ultraviolet–Visible Diffuse Reflectance Spectroscopy (UV- DRS), and photoelectrochemical studies were used to investigate the formation of GO-TiO₂-WO₃ (GTW) nanocomposite. UV–Vis spectroscopy and mass spectroscopy were utilized to examine its practical ability to degrade effluents present in wastewater. PXRD data confirmed the crystallinity of the nanocomposite. HR-TEM data shows the uniform distribution of TiO₂ and WO₃ nanoparticles on the GO sheet. BET analysis shows the synthesized nanocomposite has higher surface area which enhanced the pollutant adsorption ability of GTW composite to greater extent. The photoelectrochemical analysis confirms the GTW nanocomposite is an active photoelectrocatalyst and is a n-type semiconductor which is sufficiently reproducible over several light-on–off cycles. The photocatalytic degradation in presence of GTW nanocomposite was found to be 99 %, 94 %, and 93 % for MB, CR and MG dyes, respectively. The photocatalytic degradation for antibiotic and organic compound was also carried out using GTW nanocomposite and the results obtained were 88 % and 87 % for azithromycin and phenol, respectively. To check the practical utility of the synthesized nanocomposite, the catalyst was reused up to three consecutive cycles and shows 90 % degradation rate with methylene blue dye (MB). The synthesized nanocomposite may be a promising photocatalyst for the degradation of effluents present in wastewater.

{"title":"Synergistic photocatalytic degradation of multiple class of organic pollutants using GO-TiO2-WO3 nanocomposite","authors":"Deepika Yadav , Navita Sharma , Pratibha Sharma , Preeti , Anirban Das , Pooja Rawat , Sudip Majumder , Chandra Mohan Srivastava","doi":"10.1016/j.mseb.2025.118241","DOIUrl":"10.1016/j.mseb.2025.118241","url":null,"abstract":"<div><div>The photocatalytic materials and process optimization hold significant promise for the sustainable treatment of effluents present in wastewater, contributing to environmental protection and the conservation of water resources. In this research work, GO based ternary nanocomposite was synthesized using the ultrasonication method and used for the photocatalytic degradation of dyes, antibiotics, and organic compounds. Powder X-ray Diffraction (PXRD), Energy Dispersive Spectroscopy (EDS), High-Resolution Transmission Electron Microscope (HR-TEM), Brunauer-Emmett & Teller (BET) method, X-ray photoelectron spectroscopy (XPS), Ultraviolet–Visible Diffuse Reflectance Spectroscopy (UV- DRS), and photoelectrochemical studies were used to investigate the formation of GO-TiO<sub>2</sub>-WO<sub>3</sub> (GTW) nanocomposite. UV–Vis spectroscopy and mass spectroscopy were utilized to examine its practical ability to degrade effluents present in wastewater. PXRD data confirmed the crystallinity of the nanocomposite. HR-TEM data shows the uniform distribution of TiO<sub>2</sub> and WO<sub>3</sub> nanoparticles on the GO sheet. BET analysis shows the synthesized nanocomposite has higher surface area which enhanced the pollutant adsorption ability of GTW composite to greater extent. The photoelectrochemical analysis confirms the GTW nanocomposite is an active photoelectrocatalyst and is a n-type semiconductor which is sufficiently reproducible over several light-on–off cycles. The photocatalytic degradation in presence of GTW nanocomposite was found to be 99 %, 94 %, and 93 % for MB, CR and MG dyes, respectively. The photocatalytic degradation for antibiotic and organic compound was also carried out using GTW nanocomposite and the results obtained were 88 % and 87 % for azithromycin and phenol, respectively. To check the practical utility of the synthesized nanocomposite, the catalyst was reused up to three consecutive cycles and shows 90 % degradation rate with methylene blue dye (MB). The synthesized nanocomposite may be a promising photocatalyst for the degradation of effluents present in wastewater.</div></div>","PeriodicalId":18233,"journal":{"name":"Materials Science and Engineering: B","volume":"317 ","pages":"Article 118241"},"PeriodicalIF":3.9,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143704739","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

LiAlO2 coated activated carbons via liquid-phase deposition and sintering for high-voltage lithium-ion capacitors

IF 3.9 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Science and Engineering: B

Pub Date : 2025-03-26 DOI: 10.1016/j.mseb.2025.118247

Renzhi Zhang , Keliang Zhang , Yabin An , Hongquan Liu , Xianzhong Sun , Chen Li , Fujian Ren , Kai Wang , Xiong Zhang , Yanwei Ma

Lithium-ion capacitors (LICs) integrate the benefits of both batteries and capacitors, exhibiting high power density, extended cycle life, low self-discharge rates, and enhanced safety. Although their energy density is 2 to 4 times greater than that of supercapacitors, it still remains relatively low and requires further improvement. According to the equation E = 1/2 CU2, the stored energy E is proportional to the capacitance C and the square of the voltage U. Consequently, increasing the operating voltage of the device presents a viable approach for developing lithium-ion capacitors with high energy density. However, as the voltage rises, irreversible side reactions may take place at the capacitor’s positive electrode, resulting in a decrease in over all cycle life. In this study, the precursor of solid-state coating was thoroughly mixed with activated carbon in a liquid-phase environment, and subsequently, the solid-state reaction method was utilized to coat LiAlO₂ on the surface of the activated carbon positive electrode. The research results indicate that the coated materials can effectively improve the occurrence of irreversible reactions between the activated carbon positive and the electrolyte, thereby enhancing its cycle life at high voltages. The half-cell assembled with the LiAlO₂ coated activated carbon showed a cycle retention rate increase from 80 % to 90 % after 2000 cycles at a current density of 1 A g⁻¹ within a voltage range of 2.0–4.2 V compared with uncoated activated carbon. This coating research effectively improves the rated voltage of LICs, thus enhancing their energy storage capacity. The method employed is characterized by its simplicity in preparation and its significant ability to enhance high voltage performance, demonstrating great potential for application.

{"title":"LiAlO2 coated activated carbons via liquid-phase deposition and sintering for high-voltage lithium-ion capacitors","authors":"Renzhi Zhang , Keliang Zhang , Yabin An , Hongquan Liu , Xianzhong Sun , Chen Li , Fujian Ren , Kai Wang , Xiong Zhang , Yanwei Ma","doi":"10.1016/j.mseb.2025.118247","DOIUrl":"10.1016/j.mseb.2025.118247","url":null,"abstract":"<div><div>Lithium-ion capacitors (LICs) integrate the benefits of both batteries and capacitors, exhibiting high power density, extended cycle life, low self-discharge rates, and enhanced safety. Although their energy density is 2 to 4 times greater than that of supercapacitors, it still remains relatively low and requires further improvement. According to the equation E = 1/2 CU2, the stored energy E is proportional to the capacitance C and the square of the voltage U. Consequently, increasing the operating voltage of the device presents a viable approach for developing lithium-ion capacitors with high energy density. However, as the voltage rises, irreversible side reactions may take place at the capacitor’s positive electrode, resulting in a decrease in over all cycle life. In this study, the precursor of solid-state coating was thoroughly mixed with activated carbon in a liquid-phase environment, and subsequently, the solid-state reaction method was utilized to coat LiAlO<sub>2</sub> on the surface of the activated carbon positive electrode. The research results indicate that the coated materials can effectively improve the occurrence of irreversible reactions between the activated carbon positive and the electrolyte, thereby enhancing its cycle life at high voltages. The half-cell assembled with the LiAlO<sub>2</sub> coated activated carbon showed a cycle retention rate increase from 80 % to 90 % after 2000 cycles at a current density of 1 A g<sup>−1</sup> within a voltage range of 2.0–4.2 V compared with uncoated activated carbon. This coating research effectively improves the rated voltage of LICs, thus enhancing their energy storage capacity. The method employed is characterized by its simplicity in preparation and its significant ability to enhance high voltage performance, demonstrating great potential for application.</div></div>","PeriodicalId":18233,"journal":{"name":"Materials Science and Engineering: B","volume":"317 ","pages":"Article 118247"},"PeriodicalIF":3.9,"publicationDate":"2025-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143704738","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Efficient photocatalytic degradation of pharmaceutical pollutants using CZTS nanoparticles

IF 3.9 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Science and Engineering: B

Pub Date : 2025-03-26 DOI: 10.1016/j.mseb.2025.118239

Vaishnavi Umbrajkar , Manali Kaladagi , Abhinay Mandawade , Sagar Khater , Haribhau Gholap , Maya Khater

Pharmaceutical and antibiotic effluents pose environmental risks, including water pollution and antibiotic resistance. This study investigates an eco-friendly nanotechnology approach using irradiated and non-irradiated Cu₂ZnSnS₄ (CZTS) nanoparticles (NPs) for wastewater treatment. CZTS NPs were synthesized via a one-step hydrothermal method. X-ray diffraction confirmed their tetragonal kesterite structure, while optical analysis indicated a 1.74 eV band gap. Photoluminescence spectroscopy showed a peak at 801 nm, suggesting minimal electron-hole recombination. HRTEM and FESEM confirmed spherical NPs (5–10 nm), and EDAX/XPS verified elemental composition and oxidation states. Photocatalytic degradation of pharmaceuticals, including linezolid, was optimized for pH, temperature, time, and agitation. Optimal conditions (pH 7, 45 °C, 120 RPM) achieved up to 86.97 % degradation. Radical scavenging assays confirmed hydroxyl and proton radicals’ involvement. CZTS NPs showed enhanced reusability, with degradation efficiency increasing from 49.09 % to 80.08 % over three cycles, demonstrating their potential for sustainable wastewater treatment.

{"title":"Efficient photocatalytic degradation of pharmaceutical pollutants using CZTS nanoparticles","authors":"Vaishnavi Umbrajkar , Manali Kaladagi , Abhinay Mandawade , Sagar Khater , Haribhau Gholap , Maya Khater","doi":"10.1016/j.mseb.2025.118239","DOIUrl":"10.1016/j.mseb.2025.118239","url":null,"abstract":"<div><div>Pharmaceutical and antibiotic effluents pose environmental risks, including water pollution and antibiotic resistance. This study investigates an eco-friendly nanotechnology approach using irradiated and non-irradiated Cu<sub>2</sub>ZnSnS<sub>4</sub> (CZTS) nanoparticles (NPs) for wastewater treatment. CZTS NPs were synthesized via a one-step hydrothermal method. X-ray diffraction confirmed their tetragonal kesterite structure, while optical analysis indicated a 1.74 eV band gap. Photoluminescence spectroscopy showed a peak at 801 nm, suggesting minimal electron-hole recombination. HRTEM and FESEM confirmed spherical NPs (5–10 nm), and EDAX/XPS verified elemental composition and oxidation states. Photocatalytic degradation of pharmaceuticals, including linezolid, was optimized for pH, temperature, time, and agitation. Optimal conditions (pH 7, 45 °C, 120 RPM) achieved up to 86.97 % degradation. Radical scavenging assays confirmed hydroxyl and proton radicals’ involvement. CZTS NPs showed enhanced reusability, with degradation efficiency increasing from 49.09 % to 80.08 % over three cycles, demonstrating their potential for sustainable wastewater treatment.</div></div>","PeriodicalId":18233,"journal":{"name":"Materials Science and Engineering: B","volume":"317 ","pages":"Article 118239"},"PeriodicalIF":3.9,"publicationDate":"2025-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143704736","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Advanced cathode catalysts with well-defined active sites toward CO2 reduction/evolution reactions of Li-CO2 battery

IF 3.9 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Science and Engineering: B

Pub Date : 2025-03-26 DOI: 10.1016/j.mseb.2025.118246

Yu Zhang , Fan Zou , Encong Zhang , Jiahui Huang , Jianyu Chen

To achieve the carbon neutrality around the world, the effective utilization of carbon dioxide (CO₂) is an indispensable strategy. Lithium-CO₂ batteries show great potential in both CO₂ capture and energy storage, becoming a promising pathway to reduce CO₂ emission. However, hindered by the sluggish kinetics of CO₂ reduction and evolution reactions during discharging-charging processes, Li-CO₂ batteries show high overpotential, poor reversibility, and undesirable cyclability, which is far from the practical requirement. The investigation towards rational design of cathode catalysts containing the element species selection, precise structure design, electronic properties regulation, etc. has been proposed to analyze the reaction mechanism of CO₂ reduction/evolution reactions. In this review, recent advancements on cathode catalysts of Li-CO₂ batteries that have investigated the structure-performance relationship based on well-defined active catalytic sites have been summarized and discussed to achieve a better understanding on mechanism and effective construction of advanced Li-CO₂ batteries for further study.

{"title":"Advanced cathode catalysts with well-defined active sites toward CO2 reduction/evolution reactions of Li-CO2 battery","authors":"Yu Zhang , Fan Zou , Encong Zhang , Jiahui Huang , Jianyu Chen","doi":"10.1016/j.mseb.2025.118246","DOIUrl":"10.1016/j.mseb.2025.118246","url":null,"abstract":"<div><div>To achieve the carbon neutrality around the world, the effective utilization of carbon dioxide (CO<sub>2</sub>) is an indispensable strategy. Lithium-CO<sub>2</sub> batteries show great potential in both CO<sub>2</sub> capture and energy storage, becoming a promising pathway to reduce CO<sub>2</sub> emission. However, hindered by the sluggish kinetics of CO<sub>2</sub> reduction and evolution reactions during discharging-charging processes, Li-CO<sub>2</sub> batteries show high overpotential, poor reversibility, and undesirable cyclability, which is far from the practical requirement. The investigation towards rational design of cathode catalysts containing the element species selection, precise structure design, electronic properties regulation, etc. has been proposed to analyze the reaction mechanism of CO<sub>2</sub> reduction/evolution reactions. In this review, recent advancements on cathode catalysts of Li-CO<sub>2</sub> batteries that have investigated the structure-performance relationship based on well-defined active catalytic sites have been summarized and discussed to achieve a better understanding on mechanism and effective construction of advanced Li-CO<sub>2</sub> batteries for further study.</div></div>","PeriodicalId":18233,"journal":{"name":"Materials Science and Engineering: B","volume":"317 ","pages":"Article 118246"},"PeriodicalIF":3.9,"publicationDate":"2025-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143704737","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Improved thermal conductivity of Ga2O3 thin films grown on polished polycrystalline diamond by thermal annealing

IF 3.9 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Science and Engineering: B

Pub Date : 2025-03-26 DOI: 10.1016/j.mseb.2025.118243

Ji-Yeon Seo , Gi-Ryeo Seong , Yun-Ji Shin , Seong-Min Jeong , Tae-Gyu Kim , Si-Young Bae

Since diamonds are the ultimate heat dissipation material, attempts have been made to integrate gallium oxide (Ga₂O₃) and diamond. Mist chemical vapor deposition is one of several integration approaches used to grow Ga₂O₃ thin films on polycrystalline diamond templates. The thermal conductivity of the grown Ga₂O₃ thin film was measured using time-domain thermoreflectance (TDTR). Smoothening of the diamond surface texture was effective in achieving reliable measurement of TDTR. The thermal annealing of Ga₂O₃ thin film strongly affected the improvement of thermal transport by inducing the smoothness of the grain/grain interface, hardening of grain size, and unification of the crystal phase with crystal ordering. The annealed Ga₂O₃ thin film, with a thickness of 1–1.5 μm had a thermal conductivity of 3.54 W/mK, which increased by 48 % compared to the as-grown film. Therefore, in practical applications, this approach may prove beneficial for achieving high heat dissipation in Ga₂O₃-based devices.

{"title":"Improved thermal conductivity of Ga2O3 thin films grown on polished polycrystalline diamond by thermal annealing","authors":"Ji-Yeon Seo , Gi-Ryeo Seong , Yun-Ji Shin , Seong-Min Jeong , Tae-Gyu Kim , Si-Young Bae","doi":"10.1016/j.mseb.2025.118243","DOIUrl":"10.1016/j.mseb.2025.118243","url":null,"abstract":"<div><div>Since diamonds are the ultimate heat dissipation material, attempts have been made to integrate gallium oxide (Ga<sub>2</sub>O<sub>3</sub>) and diamond. Mist chemical vapor deposition is one of several integration approaches used to grow Ga<sub>2</sub>O<sub>3</sub> thin films on polycrystalline diamond templates. The thermal conductivity of the grown Ga<sub>2</sub>O<sub>3</sub> thin film was measured using time-domain thermoreflectance (TDTR). Smoothening of the diamond surface texture was effective in achieving reliable measurement of TDTR. The thermal annealing of Ga<sub>2</sub>O<sub>3</sub> thin film strongly affected the improvement of thermal transport by inducing the smoothness of the grain/grain interface, hardening of grain size, and unification of the crystal phase with crystal ordering. The annealed Ga<sub>2</sub>O<sub>3</sub> thin film, with a thickness of 1–1.5 μm had a thermal conductivity of 3.54 W/mK, which increased by 48 % compared to the as-grown film. Therefore, in practical applications, this approach may prove beneficial for achieving high heat dissipation in Ga<sub>2</sub>O<sub>3</sub>-based devices.</div></div>","PeriodicalId":18233,"journal":{"name":"Materials Science and Engineering: B","volume":"317 ","pages":"Article 118243"},"PeriodicalIF":3.9,"publicationDate":"2025-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143704740","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

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