Pub Date : 2025-01-25DOI: 10.1016/j.matchemphys.2025.130452
Kaushal Kumar Sarswat , A. Dahshan , Neeraj Mehta
In this study, we reported the micro-hardness results of Se₇₈₋ₓTe₂₀Sn₂Inₓ (x = 0, 2, 4, 6) glass-ceramic alloys, tested using micro-indentation under various loads for fixed durations. Vickers hardness was calculated using both optical microscopy and micro-indentation techniques. Differential scanning calorimetry (DSC) and X-ray diffraction (XRD) techniques were used to identify the thermally activated glass transition process and structure of the as-prepared samples.
We developed a new empirical formula for the theoretical estimation of the elastic moduli, including Young modulus (Y), bulk modulus (B), and shear modulus (G). Additionally, we investigated the covalent nature of the glassy system along with other mechanical properties, such as micro-void formation energy (Eh), fragility index (m), and micro-void volume (Vh). Furthermore, we determined several physical characteristics, including density (ρ), molar volume (MV), compactness (δ), chemical bond strength, and overall mean bond energy (<E>). The cross-linking of indium with selenium chains indicates that rigidity transitions are driven as the indium content increases, along with the growing number density of In₂Se₃ and InSe.
{"title":"Thermo-mechanical behavior of Se-Te-Sn-In glass-ceramic alloys: Influence of indium concentration and micro-indentation load","authors":"Kaushal Kumar Sarswat , A. Dahshan , Neeraj Mehta","doi":"10.1016/j.matchemphys.2025.130452","DOIUrl":"10.1016/j.matchemphys.2025.130452","url":null,"abstract":"<div><div>In this study, we reported the micro-hardness results of Se₇₈₋ₓTe₂₀Sn₂Inₓ (x = 0, 2, 4, 6) glass-ceramic alloys, tested using micro-indentation under various loads for fixed durations. Vickers hardness was calculated using both optical microscopy and micro-indentation techniques. Differential scanning calorimetry (DSC) and X-ray diffraction (XRD) techniques were used to identify the thermally activated glass transition process and structure of the as-prepared samples.</div><div>We developed a new empirical formula for the theoretical estimation of the elastic moduli, including Young modulus (Y), bulk modulus (B), and shear modulus (G). Additionally, we investigated the covalent nature of the glassy system along with other mechanical properties, such as micro-void formation energy (<em>E</em><sub><em>h</em></sub>), fragility index (<em>m</em>), and micro-void volume (<em>V</em><sub><em>h</em></sub>). Furthermore, we determined several physical characteristics, including density (<em>ρ</em>), molar volume (<em>M</em><sub><em>V</em></sub>), compactness (<em>δ</em>), chemical bond strength, and overall mean bond energy (<<em>E</em>>). The cross-linking of indium with selenium chains indicates that rigidity transitions are driven as the indium content increases, along with the growing number density of In₂Se₃ and InSe.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"334 ","pages":"Article 130452"},"PeriodicalIF":4.3,"publicationDate":"2025-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143156044","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}
Pub Date : 2025-01-24DOI: 10.1016/j.matchemphys.2025.130404
Imran Ullah Khan , Mohd Hafiz Dzarfan Othman , Mukhlis A. Rahman , Musawira Iftikhar , Zeeshan Ali , Muhammad Muqeet , Juhana Jaafar , Asim Jilani , Mohd Khairul Naim Ramli
Amine-modified mixed matrix membranes (A-Ms) have been developed with improved anti-plasticization behavior at high pressure for natural gas purification. Neat polysulfone (PSf) hollow fiber membranes and amine-modified zeolitic imidazole framework-8 (A-ZIF-8) blended PSf membranes have been prepared with the aim of purifying natural gas. The fabricated membranes have been evaluated using gas performance tests, thermogravimetric analysis (TGA), atomic force microscopy (AFM), Fourier transform infrared spectroscopy (FTIR), differential scanning calorimetry (DSC), and field emission scanning electron microscopy (FESEM). When tested using pure gases, the membrane with 0.25 wt percent A-ZIF-8 demonstrated a substantial enhancement in CO2/CH4 selectivity of 50 %, 72 %, and 69 % when compared to the neat membrane, and an increase of 33 %, 78 %, and 77 % in CO2/CH4 selectivity compared to the virgin ZIF-8-based membrane at feed pressures of 6, 8, and 10 bar (g), respectively. Subsequently, the separation performance has decreased due to the increased A-ZIF-8 loading. Improved anti-plasticization behavior at high feed pressure is further demonstrated by the exceptional gas separation performance at low loading of A-ZIF-8 nanoparticles. The promising results showed the potential use of A-ZIF-8 for natural gas purification.
{"title":"Enhanced CO2/CH4 separation using amine-modified ZIF-8 mixed matrix membranes","authors":"Imran Ullah Khan , Mohd Hafiz Dzarfan Othman , Mukhlis A. Rahman , Musawira Iftikhar , Zeeshan Ali , Muhammad Muqeet , Juhana Jaafar , Asim Jilani , Mohd Khairul Naim Ramli","doi":"10.1016/j.matchemphys.2025.130404","DOIUrl":"10.1016/j.matchemphys.2025.130404","url":null,"abstract":"<div><div>Amine-modified mixed matrix membranes (A-Ms) have been developed with improved anti-plasticization behavior at high pressure for natural gas purification. Neat polysulfone (PSf) hollow fiber membranes and amine-modified zeolitic imidazole framework-8 (A-ZIF-8) blended PSf membranes have been prepared with the aim of purifying natural gas. The fabricated membranes have been evaluated using gas performance tests, thermogravimetric analysis (TGA), atomic force microscopy (AFM), Fourier transform infrared spectroscopy (FTIR), differential scanning calorimetry (DSC), and field emission scanning electron microscopy (FESEM). When tested using pure gases, the membrane with 0.25 wt percent A-ZIF-8 demonstrated a substantial enhancement in CO<sub>2</sub>/CH<sub>4</sub> selectivity of 50 %, 72 %, and 69 % when compared to the neat membrane, and an increase of 33 %, 78 %, and 77 % in CO<sub>2</sub>/CH<sub>4</sub> selectivity compared to the virgin ZIF-8-based membrane at feed pressures of 6, 8, and 10 bar (g), respectively. Subsequently, the separation performance has decreased due to the increased A-ZIF-8 loading. Improved anti-plasticization behavior at high feed pressure is further demonstrated by the exceptional gas separation performance at low loading of A-ZIF-8 nanoparticles. The promising results showed the potential use of A-ZIF-8 for natural gas purification.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"334 ","pages":"Article 130404"},"PeriodicalIF":4.3,"publicationDate":"2025-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143099575","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}
Li metal anode is lastingly pursued for high energy density batteries. Most current attempts focus on modifying electrochemical performance, however the lithium quantity, or the Li thickness, is often overlooked. The inherent thickness of conventional lithium foil hampers achieving the desired high energy density. In this work, we fabricated an ultra-thin lithium-rich alloy with in-site 3D topological skeleton. By incorporating Ag into molten lithium, a special Li96·86Ag3.14 alloy skeleton in Li–Ag solid solution was constructed which greatly enhances mechanical strength, enabling the preparation of foils as thin as from 5 to 50 μm through rolling procedure. Meanwhile, benefiting from the inner lithiophilic 3D-skeleton, Li96·86Ag3.14 alloy exhibited superior electrochemical performance. The cycle life of Li96·86Ag3.14 symmetric cell was remarkably prolonged from ∼200h to 550h at 1mAcm−2 @1mAhcm−2. Furthermore, when pairing 30 μm-thick Li96·86Ag3.14 alloy with ∼2.6mAh cm−2 LFP cathode, the coin cell maintained a stable cycling of 100 cycles and the pouch also keeps 60 cycles without obvious capacity decay. Besides, the volumetric energy density of LCO||Li96·86Ag3.14 pouch is up to ∼1000 Wh L−1. Additionally, our research explored the utility of the ultra-thin Li–Ag alloy in graphite and Si/C anode prelithiation, showcasing its versatility and potential for advancing battery technology.
{"title":"An ultra-thin rich-lithium alloy with in-site 3D skeleton for lithium metal batteries and anode prelithitaion","authors":"Hui Xu , Weizhou Hou , Can Zhang , Xinlong Chen , Yujian Zhang","doi":"10.1016/j.matchemphys.2024.130349","DOIUrl":"10.1016/j.matchemphys.2024.130349","url":null,"abstract":"<div><div>Li metal anode is lastingly pursued for high energy density batteries. Most current attempts focus on modifying electrochemical performance, however the lithium quantity, or the Li thickness, is often overlooked. The inherent thickness of conventional lithium foil hampers achieving the desired high energy density. In this work, we fabricated an ultra-thin lithium-rich alloy with in-site 3D topological skeleton. By incorporating Ag into molten lithium, a special Li<sub>96</sub><sub>·</sub><sub>86</sub>Ag<sub>3.14</sub> alloy skeleton in Li–Ag solid solution was constructed which greatly enhances mechanical strength, enabling the preparation of foils as thin as from 5 to 50 μm through rolling procedure. Meanwhile, benefiting from the inner lithiophilic 3D-skeleton, Li<sub>96</sub><sub>·</sub><sub>86</sub>Ag<sub>3.14</sub> alloy exhibited superior electrochemical performance. The cycle life of Li<sub>96</sub><sub>·</sub><sub>86</sub>Ag<sub>3.14</sub> symmetric cell was remarkably prolonged from ∼200h to 550h at 1mAcm<sup>−2</sup> @1mAhcm<sup>−2</sup>. Furthermore, when pairing 30 μm-thick Li<sub>96</sub><sub>·</sub><sub>86</sub>Ag<sub>3.14</sub> alloy with ∼2.6mAh cm<sup>−2</sup> LFP cathode, the coin cell maintained a stable cycling of 100 cycles and the pouch also keeps 60 cycles without obvious capacity decay. Besides, the volumetric energy density of LCO||Li<sub>96</sub><sub>·</sub><sub>86</sub>Ag<sub>3.14</sub> pouch is up to ∼1000 Wh L<sup>−1</sup>. Additionally, our research explored the utility of the ultra-thin Li–Ag alloy in graphite and Si/C anode prelithiation, showcasing its versatility and potential for advancing battery technology.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"334 ","pages":"Article 130349"},"PeriodicalIF":4.3,"publicationDate":"2025-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143350280","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}
Pub Date : 2025-01-24DOI: 10.1016/j.matchemphys.2025.130407
Ya-Wen Lin , Sheng-Yuan Peng , Kae-Long Lin
This paper reports on the hydrothermal synthesis of environmentally–friendly hydroxyapatite (eco–HAp) using a cationic surfactant, cetyltrimethylammonium bromide, as a template agent with 1,3,5–trimethylbenzene as a pore expansion agent. Fourier transform infrared spectroscopy (FT–IR), nuclear magnetic resonance (NMR), and scanning electron microscopy (SEM) revealed that the resulting product consists of rod–like structures.
In batch measurements, an adsorbent dose of 15 g/L was sufficient to eradicate roughly 99 % of the Cd2+ in solution within 60 min, resulting in a maximum calculated adsorption capacity of 13.44 mg/g. Kinetics analysis revealed that the rate of adsorption was governed by pseudo–second–order kinetics (i.e., chemical adsorption), reaching equilibrium within 60 min. Thermodynamic analysis revealed that Cd2+ adsorption on the eco–HAp was a spontaneous, energetically–favorable, exothermic reaction. Overall, this study demonstrated the effectiveness of the prepared eco–HAp for the elimination of Cd2+ from aqueous solutions.
{"title":"Hydrothermal synthesis of environmentally-friendly hydroxyapatite using recycled waste for efficient Cd2+ removal from aqueous solutions","authors":"Ya-Wen Lin , Sheng-Yuan Peng , Kae-Long Lin","doi":"10.1016/j.matchemphys.2025.130407","DOIUrl":"10.1016/j.matchemphys.2025.130407","url":null,"abstract":"<div><div>This paper reports on the hydrothermal synthesis of environmentally–friendly hydroxyapatite (eco–HAp) using a cationic surfactant, cetyltrimethylammonium bromide, as a template agent with 1,3,5–trimethylbenzene as a pore expansion agent. Fourier transform infrared spectroscopy (FT–IR), nuclear magnetic resonance (NMR), and scanning electron microscopy (SEM) revealed that the resulting product consists of rod–like structures.</div><div>In batch measurements, an adsorbent dose of 15 g/L was sufficient to eradicate roughly 99 % of the Cd<sup>2+</sup> in solution within 60 min, resulting in a maximum calculated adsorption capacity of 13.44 mg/g. Kinetics analysis revealed that the rate of adsorption was governed by pseudo–second–order kinetics (i.e., chemical adsorption), reaching equilibrium within 60 min. Thermodynamic analysis revealed that Cd<sup>2+</sup> adsorption on the eco–HAp was a spontaneous, energetically–favorable, exothermic reaction. Overall, this study demonstrated the effectiveness of the prepared eco–HAp for the elimination of Cd<sup>2+</sup> from aqueous solutions.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"334 ","pages":"Article 130407"},"PeriodicalIF":4.3,"publicationDate":"2025-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143099573","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}
Effect of Carbon Quantum Dots (CQDs) on the photocatalyst performance of Al2(SO4)3/CQDs composites. CQDs were synthesized from tea residue using a hydrothermal method, which has been studied. The investigation included a comprehensive nanostructure analysis through X-ray Diffraction (XRD), Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (TEM), Fourier Transform Infrared Spectroscopy (FTIR), UV–Vis Spectroscopy, and Photoluminescence (PL) Analysis. TEM revealed the formation of coral-shaped clusters in the Al2(SO4)3/CQDs composite, with nanoparticle sizes ranging from 2 to 10 nm. Notably, the Al2(SO4)3/CQDs II variant, comprising 95 % Al2(SO4)3 and 5 % CQDs, demonstrated the highest photocatalytic performance. This composite effectively degraded fipronil pesticide, achieving an impressive 84 % degradation within 60 min. This performance can be attributed to several factors, including the narrowed d-spacing, the work effectiveness of hydroxyl radical active species, the lowest bandgap, and the profound impact on C–C bonds within Al2(SO4)3/CQDs II. The findings suggest that the Al2(SO4)3/CQDs composite holds great promise as an advanced material for photocatalytic pesticide degradation, thereby contributing to the broader goal of ensuring sustainable access to clean water resources. This study provides valuable insights into the design and development of advanced photocatalytic materials, with the potential to significantly impact the field of water purification and environmental sustainability.
{"title":"Structural characterization of carbon quantum dots derived from tea residue and their photocatalytic application in CQDs-modified Al2(SO4)3 nanoparticles for sustainable pesticide degradation","authors":"Andi Sitti Rahmah , Heryanto Heryanto , Asnan Rinovian , Nurfina Yudasari , Dahlang Tahir","doi":"10.1016/j.matchemphys.2025.130401","DOIUrl":"10.1016/j.matchemphys.2025.130401","url":null,"abstract":"<div><div>Effect of Carbon Quantum Dots (CQDs) on the photocatalyst performance of Al<sub>2</sub>(SO<sub>4</sub>)<sub>3</sub>/CQDs composites. CQDs were synthesized from tea residue using a hydrothermal method, which has been studied. The investigation included a comprehensive nanostructure analysis through X-ray Diffraction (XRD), Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (TEM), Fourier Transform Infrared Spectroscopy (FTIR), UV–Vis Spectroscopy, and Photoluminescence (PL) Analysis. TEM revealed the formation of coral-shaped clusters in the Al<sub>2</sub>(SO<sub>4</sub>)<sub>3</sub>/CQDs composite, with nanoparticle sizes ranging from 2 to 10 nm. Notably, the Al<sub>2</sub>(SO<sub>4</sub>)<sub>3</sub>/CQDs II variant, comprising 95 % Al<sub>2</sub>(SO<sub>4</sub>)<sub>3</sub> and 5 % CQDs, demonstrated the highest photocatalytic performance. This composite effectively degraded fipronil pesticide, achieving an impressive 84 % degradation within 60 min. This performance can be attributed to several factors, including the narrowed d-spacing, the work effectiveness of hydroxyl radical active species, the lowest bandgap, and the profound impact on C–C bonds within Al<sub>2</sub>(SO<sub>4</sub>)<sub>3</sub>/CQDs II. The findings suggest that the Al<sub>2</sub>(SO<sub>4</sub>)<sub>3</sub>/CQDs composite holds great promise as an advanced material for photocatalytic pesticide degradation, thereby contributing to the broader goal of ensuring sustainable access to clean water resources. This study provides valuable insights into the design and development of advanced photocatalytic materials, with the potential to significantly impact the field of water purification and environmental sustainability.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"334 ","pages":"Article 130401"},"PeriodicalIF":4.3,"publicationDate":"2025-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143099585","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}
Pub Date : 2025-01-23DOI: 10.1016/j.matchemphys.2025.130447
Mariam Seemab , Ghulam Nabi , Akram A. Alfuraydi , Ali Hammad
Doping based induced defects and morphology tuning in nickel sulfide plays a crucial role for performance improvement and stability. So, in pursuit of high-performance supercapacitors, the morphology and conductivity of nickel sulfide (NiS) nano-sheets have been tailored through strategic doping with transition metal zinc (Zn). The Zn incorporation in NiS induced structural and electrochemical changes with varying doping concentrations of 1 %, 3 % and 5 % (total weight of host material) named as NiZn1S, NiZn3S and NiZn5S respectively. The morphological, chemical, structural, compositional and optical results of SEM, TEM, HRTEM, EDS, XRD, FTIR, PL and UV revealed NiZn3S to be the best as its nano-sheets like morphology has offered high active surface area which ultimately increases the electrochemical performance as well as stability. The supreme specific capacitance of NiZn3S recorded 1322 Fg_1 at 1 Ag_1 with splendid cyclic retention of 94 % after 5000th cycles. NiZn3S exhibited both charge storage mechanisms with 29 % capacitive controlled and 71 % diffusive controlled contribution ratio at 5 mVs_1. The power law (b = 0.67) and pseudocapacitive behavior dominated by observing increased trend in capacitive (surface) contribution ratio with increased scan rate proves its suitability for supercapacitors.
{"title":"Structural and bandgap tuning of self-supported Zn–NiS thin nano-sheets as efficient supercapacitor electrode material","authors":"Mariam Seemab , Ghulam Nabi , Akram A. Alfuraydi , Ali Hammad","doi":"10.1016/j.matchemphys.2025.130447","DOIUrl":"10.1016/j.matchemphys.2025.130447","url":null,"abstract":"<div><div>Doping based induced defects and morphology tuning in nickel sulfide plays a crucial role for performance improvement and stability. So, in pursuit of high-performance supercapacitors, the morphology and conductivity of nickel sulfide (NiS) nano-sheets have been tailored through strategic doping with transition metal zinc (Zn). The Zn incorporation in NiS induced structural and electrochemical changes with varying doping concentrations of 1 %, 3 % and 5 % (total weight of host material) named as NiZn<sub>1</sub>S, NiZn<sub>3</sub>S and NiZn<sub>5</sub>S respectively. The morphological, chemical, structural, compositional and optical results of SEM, TEM, HRTEM, EDS, XRD, FTIR, PL and UV revealed NiZn<sub>3</sub>S to be the best as its nano-sheets like morphology has offered high active surface area which ultimately increases the electrochemical performance as well as stability. The supreme specific capacitance of NiZn<sub>3</sub>S recorded 1322 Fg<sup>_1</sup> at 1 Ag<sup>_1</sup> with splendid cyclic retention of 94 % after 5000th cycles. NiZn<sub>3</sub>S exhibited both charge storage mechanisms with 29 % capacitive controlled and 71 % diffusive controlled contribution ratio at 5 mVs<sup>_1</sup>. The power law (b = 0.67) and pseudocapacitive behavior dominated by observing increased trend in capacitive (surface) contribution ratio with increased scan rate proves its suitability for supercapacitors.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"334 ","pages":"Article 130447"},"PeriodicalIF":4.3,"publicationDate":"2025-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143099202","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}
Pub Date : 2025-01-23DOI: 10.1016/j.matchemphys.2025.130448
Naseem Iqbal , Rabia Ahmad , Tayyaba Noor , Nadia Shahzad , Muhammad Imran Shahzad
In recent times, bimetallic electrocatalysts have been the subject of extensive research owing to their exceptional electrical configuration, synergistic impact, and remarkable efficacy in charge transfer. A bifunctional catalyst, consisting of a Mn-doped Ni-based metal-organic framework (MOF) embedded in porous carbon, was synthesized by a simple hydrothermal process using terephthalic acid as an organic linker. The obtained material was subjected to pyrolysis and was evaluated for its use in metal-air batteries. The atomic and molecular structures of pure MOFs and Mn-doped Ni-MOFs were characterized using X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), and energy dispersive spectroscopy (EDS). Post pyrolysis, the examination unveiled an ideal porosity configuration, leading to the highest specific surface area. Both the oxygen evaluation reaction (OER) and the oxygen reduction reaction (ORR) were run as tests to see how well the electrocatalysts might work. The Mn2.5Ni2.5-PC catalyst demonstrated better performance compared to pure MOFs and bimetallic MOFs, with an onset potential of 0.83 V and a half-wave potential of 0.74 V. In addition, the substance exhibited a low overpotential of 343 mV at a current density of 10 mA/cm2 in the oxygen evolution process. The Tafel slope, which measures the reaction rate, was determined to be 64.21 mV/dec. These results are in line with those seen in the original MOFs. The ultimate altered bimetallic electrocatalyst exhibited exceptional durability, with chronoamperometry lasting for 7500 s and cyclic voltammetry for 2000 cycles. The remarkable outcomes showcased the capabilities of these innovative MOFs for application in rechargeable Zn-air batteries.
{"title":"Manganese doped Ni-MOF derived porous carbon-based bifunctional oxygen electrode catalyst for metal air batteries","authors":"Naseem Iqbal , Rabia Ahmad , Tayyaba Noor , Nadia Shahzad , Muhammad Imran Shahzad","doi":"10.1016/j.matchemphys.2025.130448","DOIUrl":"10.1016/j.matchemphys.2025.130448","url":null,"abstract":"<div><div>In recent times, bimetallic electrocatalysts have been the subject of extensive research owing to their exceptional electrical configuration, synergistic impact, and remarkable efficacy in charge transfer. A bifunctional catalyst, consisting of a Mn-doped Ni-based metal-organic framework (MOF) embedded in porous carbon, was synthesized by a simple hydrothermal process using terephthalic acid as an organic linker. The obtained material was subjected to pyrolysis and was evaluated for its use in metal-air batteries. The atomic and molecular structures of pure MOFs and Mn-doped Ni-MOFs were characterized using X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), and energy dispersive spectroscopy (EDS). Post pyrolysis, the examination unveiled an ideal porosity configuration, leading to the highest specific surface area. Both the oxygen evaluation reaction (OER) and the oxygen reduction reaction (ORR) were run as tests to see how well the electrocatalysts might work. The Mn<sub>2.5</sub>Ni<sub>2.5</sub>-PC catalyst demonstrated better performance compared to pure MOFs and bimetallic MOFs, with an onset potential of 0.83 V and a half-wave potential of 0.74 V. In addition, the substance exhibited a low overpotential of 343 mV at a current density of 10 mA/cm<sup>2</sup> in the oxygen evolution process. The Tafel slope, which measures the reaction rate, was determined to be 64.21 mV/dec. These results are in line with those seen in the original MOFs. The ultimate altered bimetallic electrocatalyst exhibited exceptional durability, with chronoamperometry lasting for 7500 s and cyclic voltammetry for 2000 cycles. The remarkable outcomes showcased the capabilities of these innovative MOFs for application in rechargeable Zn-air batteries.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"334 ","pages":"Article 130448"},"PeriodicalIF":4.3,"publicationDate":"2025-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143099593","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}
Metallic Zn anode faces common problems of dendrite growth, severe hydrogen evolution reaction (HER), and self-corrosion in the aqueous environment of zinc-ion batteries (ZIBs), which eventually short circuits the battery and causes significant capacity loss. Among the various strategies to prevent the issues of ZIBs, the approach of in-situ synthesis of a conductive artificial layer is at the forefront. Herein, constructing a hydrogen-substituted graphdiyne (HGDY) interface using the modified Eglinton method on the Zn surface is proposed, which is highly feasible and can be attempted at ambient conditions. This strategy prolongs the lifespan of the symmetric cell to >1000 h, much higher than without protection (210 h). During practical use, the fabricated ZIB delivers a superior capacity of ∼295 mAh g−1 at 0.2 A g−1 and improved cycling performance due to the extensive π-conjugated system, hierarchical porous structure, and large surface area. These excellent electrochemical properties suggest that the H-substituted graphdiyne with porous carbon interface can be scaled up and used as a potential artificial coating on the surface of anode material for high-performance Zinc ion batteries.
{"title":"Improving performance of aqueous Zn//MnO2 battery using hydrogen-substituted graphdiyne as artificial coating","authors":"Anirban Ghosh , Sourav Mahato , Anjan Chakraborty , Naresh Chandra Murmu , Tapas Kuila","doi":"10.1016/j.matchemphys.2025.130445","DOIUrl":"10.1016/j.matchemphys.2025.130445","url":null,"abstract":"<div><div>Metallic Zn anode faces common problems of dendrite growth, severe hydrogen evolution reaction (HER), and self-corrosion in the aqueous environment of zinc-ion batteries (ZIBs), which eventually short circuits the battery and causes significant capacity loss. Among the various strategies to prevent the issues of ZIBs, the approach of in-situ synthesis of a conductive artificial layer is at the forefront. Herein, constructing a hydrogen-substituted graphdiyne (HGDY) interface using the modified Eglinton method on the Zn surface is proposed, which is highly feasible and can be attempted at ambient conditions. This strategy prolongs the lifespan of the symmetric cell to >1000 h, much higher than without protection (210 h). During practical use, the fabricated ZIB delivers a superior capacity of ∼295 mAh g<sup>−1</sup> at 0.2 A g<sup>−1</sup> and improved cycling performance due to the extensive π-conjugated system, hierarchical porous structure, and large surface area. These excellent electrochemical properties suggest that the H-substituted graphdiyne with porous carbon interface can be scaled up and used as a potential artificial coating on the surface of anode material for high-performance Zinc ion batteries.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"334 ","pages":"Article 130445"},"PeriodicalIF":4.3,"publicationDate":"2025-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143098990","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}
Pub Date : 2025-01-23DOI: 10.1016/j.matchemphys.2025.130446
Kamal A. Aly , Yasser A.M. Ismail , Abdullah Saad Alsubaie , Abd El-razek Mahmoud
Dielectric ceramics with high configurational entropy (ΔS) and superior thermal stability in dielectric properties are tremendous promise materials for high performance of energy storage. However, interfacial polarization is the major challenge for superior energy storage performance. Herein, high-entropy and grain resistance strategy disrupts ferroelectricity long-range ordering in (Na0.5Bi0.5)TiO3 ceramics via A/B-sites cation disorder. Lead free ceramics of (Bi0.3Na0.3Sr0.3Ba0.1)(Ti1-xNbx)O3 (x = 0.0, 0.025, 0.05, 0.075 and 0.1) (abbreviate BBSNTNbx) were prepared using solid solution technique. The obtained results reveal that ΔS increased from 1.31R for x = 0.0–1.64R for x = 0.1 resulting in superior weakly coupled relaxor phase of BO6. The imbalance of ion valances between donor Nb5+ and Ti4+ may force Ti4+ to become Ti3+ resulting in formation of Nb5+-Ti3+ ion pair leading to negligible remnant polarization (Pr). High entropy induced elevation the grain resistance and suppression interfacial polarization. As entropy increases from 1.31R to 1.64R, the energy storage efficiency (ƞ) increased from ∼83 % to 98 %. Furthermore, superior temperature stability across a broad temperature range 25–175 °C in both of Wrec and ƞ were investigated at high entropy. This research presents an effective method for designing NBT - based ceramics with suppression of interfacial polarization and ultra-high comprehensive energy storage performance.
{"title":"High entropy induced superior weakly coupled relaxor phase and suppression interfacial polarization in (Bi0.3Na0.3Sr0.3Ba0.1)(Ti1-xNbx)O3 ceramics","authors":"Kamal A. Aly , Yasser A.M. Ismail , Abdullah Saad Alsubaie , Abd El-razek Mahmoud","doi":"10.1016/j.matchemphys.2025.130446","DOIUrl":"10.1016/j.matchemphys.2025.130446","url":null,"abstract":"<div><div>Dielectric ceramics with high configurational entropy (ΔS) and superior thermal stability in dielectric properties are tremendous promise materials for high performance of energy storage. However, interfacial polarization is the major challenge for superior energy storage performance. Herein, high-entropy and grain resistance strategy disrupts ferroelectricity long-range ordering in (Na<sub>0.5</sub>Bi<sub>0.5</sub>)TiO<sub>3</sub> ceramics via A/B-sites cation disorder. Lead free ceramics of (Bi<sub>0.3</sub>Na<sub>0.3</sub>Sr<sub>0.3</sub>Ba<sub>0.1</sub>)(Ti<sub>1-x</sub>Nb<sub>x</sub>)O<sub>3</sub> (x = 0.0, 0.025, 0.05, 0.075 and 0.1) (abbreviate BBSNTNbx) were prepared using solid solution technique. The obtained results reveal that ΔS increased from 1.31R for x = 0.0–1.64R for x = 0.1 resulting in superior weakly coupled relaxor phase of BO<sub>6</sub>. The imbalance of ion valances between donor Nb<sup>5+</sup> and Ti<sup>4+</sup> may force Ti<sup>4+</sup> to become Ti<sup>3+</sup> resulting in formation of Nb<sup>5+</sup>-Ti<sup>3+</sup> ion pair leading to negligible remnant polarization (P<sub>r</sub>). High entropy induced elevation the grain resistance and suppression interfacial polarization. As entropy increases from 1.31R to 1.64R, the energy storage efficiency (ƞ) increased from ∼83 % to 98 %. Furthermore, superior temperature stability across a broad temperature range 25–175 °C in both of W<sub>rec</sub> and ƞ were investigated at high entropy. This research presents an effective method for designing NBT - based ceramics with suppression of interfacial polarization and ultra-high comprehensive energy storage performance.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"334 ","pages":"Article 130446"},"PeriodicalIF":4.3,"publicationDate":"2025-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143099592","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}
Pub Date : 2025-01-23DOI: 10.1016/j.matchemphys.2025.130450
Jing Li , Wei Xu , Weiya Yin , Qiang Cui , Simin Xia , Zhiyu Tao , Feng Hu , Nannan Wang , Yuxin Zhu , Hui Wei , Hehe Wei
Utilization the high entropy concept to fabricate novel alloy system is an effective approach to enrich the anode materials and construct high effective energy storage device. In this work, the FeCoNiCrMn high entropy alloy with two-dimensional ultra-thin nanosheet structure was prepared via the salt-template method. The particular structure offers large specific surface area, abundant ions storage sites and robust structure. As an example application, our-designed FeCoNiCrMn high entropy alloy exhibits excellent electrochemical performance as the anode in lithium ion batteries. It displays the large specific capacity (1026.01 mAh/g after 120 cycling), high rate performance and long life-span at 2 A/g (>500 cycles). Most important, extensive characterizations prove that the Cr atom is a key factor to keep structure stability, while the Mn atom is an active metal to provide capacity, indicating that the cocktail effect plays great role on improving the energy storage performance of high entropy materials. Our work provides a new pathway to develop high entropy materials and drives the development of the alternative anode for energy storage device.
{"title":"Rational design of large-scale high-entropy alloy nanosheets anode with excellent lithium storage performance","authors":"Jing Li , Wei Xu , Weiya Yin , Qiang Cui , Simin Xia , Zhiyu Tao , Feng Hu , Nannan Wang , Yuxin Zhu , Hui Wei , Hehe Wei","doi":"10.1016/j.matchemphys.2025.130450","DOIUrl":"10.1016/j.matchemphys.2025.130450","url":null,"abstract":"<div><div>Utilization the high entropy concept to fabricate novel alloy system is an effective approach to enrich the anode materials and construct high effective energy storage device. In this work, the FeCoNiCrMn high entropy alloy with two-dimensional ultra-thin nanosheet structure was prepared via the salt-template method. The particular structure offers large specific surface area, abundant ions storage sites and robust structure. As an example application, our-designed FeCoNiCrMn high entropy alloy exhibits excellent electrochemical performance as the anode in lithium ion batteries. It displays the large specific capacity (1026.01 mAh/g after 120 cycling), high rate performance and long life-span at 2 A/g (>500 cycles). Most important, extensive characterizations prove that the Cr atom is a key factor to keep structure stability, while the Mn atom is an active metal to provide capacity, indicating that the cocktail effect plays great role on improving the energy storage performance of high entropy materials. Our work provides a new pathway to develop high entropy materials and drives the development of the alternative anode for energy storage device.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"334 ","pages":"Article 130450"},"PeriodicalIF":4.3,"publicationDate":"2025-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143094472","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}
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