Journal of electrochemical science and technology最新文献

Revolutionizing Energy Storage: Exploring Processing Approaches and Electrochemical Performance of Metal-Organic Frameworks (MOFs) and Their Hybrids 能源存储的革命性变革：探索金属有机框架 (MOF) 及其混合体的加工方法和电化学性能

IF 3.7 4区工程技术

Journal of electrochemical science and technology Pub Date : 2023-11-30 DOI: 10.33961/jecst.2023.00619

Wajahat Khalid, M. R. Abdul Karim, M. Marwat

{"title":"Revolutionizing Energy Storage: Exploring Processing Approaches and Electrochemical Performance of Metal-Organic Frameworks (MOFs) and Their Hybrids","authors":"Wajahat Khalid, M. R. Abdul Karim, M. Marwat","doi":"10.33961/jecst.2023.00619","DOIUrl":"https://doi.org/10.33961/jecst.2023.00619","url":null,"abstract":"The text highlights the growing need for eco-friendly energy storage and the potential of metal-organic frameworks (MOFs) to address this demand. Despite their promise, challenges in MOF-based energy storage include stability, reproducible synthesis, cost-effectiveness, and scalability. Recent progress in supercapacitor materials, particularly over the last decade, has aimed to overcome these challenges. The review focuses on the morphological characteristics and synthesis methods of MOFs used in supercapacitors to achieve improved electrochemical performance. Various types of MOFs, including monometallic, binary, and tri-metallic compositions, as well as derivatives like hybrid nanostructures, sulfides, phosphides, and carbon composites, are explored for their energy storage potential. The review emphasizes the quest for superior electrochemical performance and stability with MOF-based materials. By analyzing recent research, the review underscores the potential of MOF-based superca-pacitors to meet the increasing demands for high power and energy density solutions in the field of energy storage.","PeriodicalId":15542,"journal":{"name":"Journal of electrochemical science and technology","volume":" 10","pages":""},"PeriodicalIF":3.7,"publicationDate":"2023-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139197426","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Electrodeposition of Ni–W/Al2O3 Nano-Composites and the Influence of Al2O3 Incorporation on Mechanical and Corrosion Resistance Behaviours 电沉积Ni-W /Al2O3纳米复合材料及Al2O3结合机械和耐腐蚀行为

4区工程技术

Journal of electrochemical science and technology Pub Date : 2023-10-06 DOI: 10.33961/jecst.2023.00577

M. Ramaprakash, R. Nivethida, A. Muthukrishnan, A. Jerom Samraj, M. G. Neelavannan, N. Rajasekaran

{"title":"Electrodeposition of Ni–W/Al2O3 Nano-Composites and the Influence of Al2O3 Incorporation on Mechanical and Corrosion Resistance Behaviours","authors":"M. Ramaprakash, R. Nivethida, A. Muthukrishnan, A. Jerom Samraj, M. G. Neelavannan, N. Rajasekaran","doi":"10.33961/jecst.2023.00577","DOIUrl":"https://doi.org/10.33961/jecst.2023.00577","url":null,"abstract":"Ni–W/Al 2 O 3 nano-composites were electrodeposited on mild steel substrate for mechanical and corrosion resistance applications. This study focused on the preparation of Ni–W/Al 2 O 3 nano-composite coating with various quantity of Al 2 O 3 incorporations. The addition of Al 2 O 3 in the electrolytes were varied from 1–10 g/L in electrolytes and the Al 2 O 3 incorporation in Ni–W/Al 2 O 3 nano-composite coatings were obtained from 1.82 to 13.86 wt.%. The incorporation of Al 2 O 3 in Ni–W alloy matrix influenced the grain size, surface morphology and structural properties were observed. The distributions of Al 2 O 3 particle in alloy matrix were confirmed using electron microscopy (FESEM and TEM) and EDAX mapping analysis. The crystal structure informations were studied using X-ray diffraction method and it confirms that the deposits having cubic crystal structure. The better corrosion rate (0.87 mpy) and microhardness (965 HV) properties were obtained for the Ni–W/Al 2 O 3 nano-composite coating with 13.86 wt.% of Al 2 O 3 incorporations.","PeriodicalId":15542,"journal":{"name":"Journal of electrochemical science and technology","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135303328","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Degradation Mechanisms of a Li–S Cell using Commercial Activated Carbon 商用活性炭降解锂电池的机理研究

4区工程技术

Journal of electrochemical science and technology Pub Date : 2023-09-20 DOI: 10.33961/jecst.2023.00451

Norihiro Togasaki, Aiko Nakao, Akari Nakai, Fujio Maeda, Seiichi Kobayashi, Tetsuya Osaka

{"title":"Degradation Mechanisms of a Li–S Cell using Commercial Activated Carbon","authors":"Norihiro Togasaki, Aiko Nakao, Akari Nakai, Fujio Maeda, Seiichi Kobayashi, Tetsuya Osaka","doi":"10.33961/jecst.2023.00451","DOIUrl":"https://doi.org/10.33961/jecst.2023.00451","url":null,"abstract":"In lithium–sulfur (Li–S) batteries, encapsulation of sulfur in activated carbon (AC) materials is a promising strategy for preventing the dissolution of lithium polysulfide into electrolytes and enhancing cycle life, because instead of solid–liquid– solid reactions, quasi-solid-state (QSS) reactions occur in the AC micropores. While a high weight fraction of sulfur in S/ AC composites is essential for achieving a high energy density of Li–S cells, the deterioration mechanisms under such conditions are still unclear. In this study, we report the deterioration mechanisms during charge–discharge cycling when the discharge products overflow from the AC. Analysis using scanning electron microscopy and energy-dispersive X-ray spectrometry confirms that the sulfur in the S/AC composites migrates outside the AC as cycling progresses, and it is barely present in the AC after 20 cycles, which corresponds to the capacity decay of the cell. Impedance analysis clearly shows that the electrical resistance of the S/AC composite and the charge-transfer resistance of QSS reactions significantly increase as a result of sulfur migration. On the other hand, the charge–discharge cycling performance under limited-capacity conditions, where the discharge products are encapsulated inside the AC, is extremely stable. These results reveal the degradation mechanism of a Li–S cell with micro-porous carbon and provide crucial insights into the design of a S/AC composite cathode and its operating conditions needed to achieve stable cycling performance.","PeriodicalId":15542,"journal":{"name":"Journal of electrochemical science and technology","volume":"84 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136312773","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Numerical Analysis of the Effect of a Three-Dimensional Baffle Structure with Variable Cross-Section on the Parallel Flow Field Performance of PEMFC 变截面三维折流板结构对PEMFC平行流场性能影响的数值分析

IF 3.7 4区工程技术

Journal of electrochemical science and technology Pub Date : 2023-09-04 DOI: 10.33961/jecst.2023.00437

Xuejian Pei, Fa-yi Yan, Jian Yao, He Lu

引用次数: 0

Author Correction: UV-cured Polymer Solid Electrolyte Reinforced using a Ceramic-Polymer Composite Layer for Stable Solid-State Li Metal Batteries 作者更正:使用陶瓷-聚合物复合层增强的uv固化聚合物固体电解质用于稳定的固态锂金属电池

IF 3.7 4区工程技术

Journal of electrochemical science and technology Pub Date : 2023-08-31 DOI: 10.33961/jecst.2022.00829.e1

Hye-Min Choi, S. Jun, Jinhong Lee, Myung-Hyun Ryu, Hyeyoung Shin, Kyu-Nam Jung

引用次数: 0

Activated Carbon-Embedded Reduced Graphene Oxide Electrodes for Capacitive Desalination 电容式海水淡化用活性炭包埋还原氧化石墨烯电极

4区工程技术

Journal of electrochemical science and technology Pub Date : 2023-08-31 DOI: 10.33961/jecst.2023.00066

Tarif Ahmed, Jin Sun Cha, Chan-gyu Park, Ho Kyong Shon, Dong Suk Han, Hyunwoong Park

{"title":"Activated Carbon-Embedded Reduced Graphene Oxide Electrodes for Capacitive Desalination","authors":"Tarif Ahmed, Jin Sun Cha, Chan-gyu Park, Ho Kyong Shon, Dong Suk Han, Hyunwoong Park","doi":"10.33961/jecst.2023.00066","DOIUrl":"https://doi.org/10.33961/jecst.2023.00066","url":null,"abstract":"Capacitive deionization of saline water is one of the most promising water purification technologies due to its high energy efficiency and cost-effectiveness. This study synthesizes porous carbon composites composed of reduced graphene oxide (rGO) and activated carbon (AC) with various rGO/AC ratios using a facile chemical method. Surface characterization of the rGO/AC composites shows a successful chemical reduction of GO to rGO and incorporation of AC into rGO. The optimized rGO/AC composite electrode exhibits a specific capacitance of ~243 F g−1 in a 1 M NaCl solution. The galvanostatic charging-discharging test shows excellent reversible cycles, with a slight shortening in the cycle time from the ~260th to the 530th cycle. Various monovalent sodium salts (NaF, NaCl, NaBr, and NaI) and chloride salts (LiCl, NaCl, KCl, and CsCl) are deionized with the rGO/AC electrode pairs at a cell voltage of 1.3 V. Among them, NaI shows the highest specific adsorption capacity of ~22.2 mg g−1. Detailed surface characterization and electrochemical analyses are conducted.","PeriodicalId":15542,"journal":{"name":"Journal of electrochemical science and technology","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135782567","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Bioelectricity Generation Using a Crosslinked Poly(vinyl alcohol) (PVA) and Chitosan (CS) Ion Exchange Membrane in Microbial Fuel Cell 交联聚乙烯醇(PVA)和壳聚糖(CS)离子交换膜在微生物燃料电池中的生物发电

IF 3.7 4区工程技术

Journal of electrochemical science and technology Pub Date : 2023-08-25 DOI: 10.33961/jecst.2023.00395

Badillo-Cardoso Jonathan, Minsoo Kim, J. R. Kim

{"title":"Bioelectricity Generation Using a Crosslinked Poly(vinyl alcohol) (PVA) and Chitosan (CS) Ion Exchange Membrane in Microbial Fuel Cell","authors":"Badillo-Cardoso Jonathan, Minsoo Kim, J. R. Kim","doi":"10.33961/jecst.2023.00395","DOIUrl":"https://doi.org/10.33961/jecst.2023.00395","url":null,"abstract":"Microbial fuel cells (MFCs) are a bioelectrochemical system where electrochemically active bacteria convert organic waste into electricity. Poly(vinyl alcohol) (PVA) and chitosan (CS) are polymers that have been studied as potential alternative ion exchange membranes to Nafion for many electrochemical systems. This study examined the optimal mixing ratio of PVA and chitosan CS in a PVA:CS composite membrane for MFC applications. PVA:CS composite membranes with 1:1, 2:1, and 3:1 ratios were synthesized and tested. The water uptake and ion exchange capacity, Fourier transform infrared spectra, and scanning electron microscopy images were analyzed to determine the physicochemical properties of PVA:CS membranes. The prepared membranes were applied to the ion exchange membrane of the MFC system, and their effects on the electrochemical performance were evaluated. These results showed that the composite membrane with a 3:1 (PVA:CS) ratio showed comparable performance to the commercialized Nafion membrane and produced more electricity than the other synthesized membranes. The PVA:CS membrane implemented MFCs produced a maximum power density of 0.026 mW cm –2 from organic waste with stable performance. Therefore, it can be applied to a cost-effective MFC system.","PeriodicalId":15542,"journal":{"name":"Journal of electrochemical science and technology","volume":" ","pages":""},"PeriodicalIF":3.7,"publicationDate":"2023-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48596326","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Pulse Electrodeposition of Polycrystalline Si Film in Molten CaCl2 Containing SiO2 Nanoparticles 在含SiO2纳米颗粒的CaCl2中脉冲电沉积多晶Si薄膜

IF 3.7 4区工程技术

Journal of electrochemical science and technology Pub Date : 2023-08-17 DOI: 10.33961/jecst.2023.00304

T. Lim, Yeosol Yoon

{"title":"Pulse Electrodeposition of Polycrystalline Si Film in Molten CaCl2 Containing SiO2 Nanoparticles","authors":"T. Lim, Yeosol Yoon","doi":"10.33961/jecst.2023.00304","DOIUrl":"https://doi.org/10.33961/jecst.2023.00304","url":null,"abstract":"The high cost of Si-based solar cells remains a substantial challenge to their widespread adoption. To address this issue, it is essential to reduce the production cost of solar-grade Si, which is used as raw material. One approach to achieve this is Si electrodeposition in molten salts containing Si sources, such as SiO 2 . In this study, we present the pulse electrode-position of Si in molten CaCl 2 containing SiO 2 nanoparticles. Theoretically, SiO 2 nanoparticles with a diameter of less than 20 nm in molten CaCl 2 at 850°C have a comparable diffusion coefficient with that of ions in aqueous solutions at room temperature. However, we observed a slower-than-expected diffusion of the SiO 2 nanoparticles, probably because of their tendency to aggregate in the molten CaCl 2 . This led to the formation of a non-uniform Si film with low current efficiency during direct current electrodeposition. We overcome this issue using pulse electrodeposition, which enabled the facile supplementation of SiO 2 nanoparticles to the substrate. This approach produced a uniform and thick electrodeposited Si film. Our results demonstrate an efficient method for Si electrodeposition in molten CaCl 2 containing SiO 2 nanoparticles, which can contribute to a reduction in production cost of solar-grade Si.","PeriodicalId":15542,"journal":{"name":"Journal of electrochemical science and technology","volume":" ","pages":""},"PeriodicalIF":3.7,"publicationDate":"2023-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44629720","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Studies on Multi-step Addition of NMP in (LiNi0.80Co0.15Al0.05) (NCA) Cathode Slurry Preparation and its Rheological, Mechanical Strength and Electrochemical Properties for Li-ion Cells NMP在（LiNi0.80Co0.15Al0.05）（NCA）阴极浆料中的分步添加及其对锂离子电池的流变、机械强度和电化学性能的研究

IF 3.7 4区工程技术

Journal of electrochemical science and technology Pub Date : 2023-06-29 DOI: 10.33961/jecst.2023.00115

Vasudevarao Pasala, S. Maddukuri, V. Sethuraman, Rekha Lankipalli, Devi Gajula, Venkateswarlu Manne

{"title":"Studies on Multi-step Addition of NMP in (LiNi0.80Co0.15Al0.05) (NCA) Cathode Slurry Preparation and its Rheological, Mechanical Strength and Electrochemical Properties for Li-ion Cells","authors":"Vasudevarao Pasala, S. Maddukuri, V. Sethuraman, Rekha Lankipalli, Devi Gajula, Venkateswarlu Manne","doi":"10.33961/jecst.2023.00115","DOIUrl":"https://doi.org/10.33961/jecst.2023.00115","url":null,"abstract":"For electrode stability and the electrochemical performance of the Li-ion cell, it is essential that the active ingredients and unique additives in the polymer binder be well dispersed with the solvent-based slurry. The efficient procedure used to cre-ate the slurry affects the rheological characteristics of the electrode slurry. When successively adding different steps of N-methyl-2-pyrrolidone (NMP) solvent to the cathode composition, it is evenly disseminated. The electrochemical performance of the Li-ion cells and the electrodes made with slurry formed by single step and multiple steps of addition of NMP solvent are examined. To preform rheological properties of cathode electrode slurry on Ni-rich Lithium Nickel-Cobalt-Alu-minum Oxide (LiNi 0.80 Co 0.15 Al 0.05 ) (NCA). Also, we investigate different step addition of electrode formation and mechanical strength characterization like peel strength. According to the EIS study, a multi-step electrode slurry has lower internal resistance than a single-step electrode slurry, which results in better electrical characteristics and efficiency. Further, micro-structure of electrodes is obtained electrochemical performance in the 18650 cylindrical cells with targeted capacity of 1.5 Ah. The slurry of electrodes prepared by single step and multiple steps of addition of NMP solvent and its effect on the fabrication of 1.5 Ah cells. A three-step solvent addition on slurry has been found to be a lower internal resistance than a single-step electrode slurry as confirmed by the EIS analysis","PeriodicalId":15542,"journal":{"name":"Journal of electrochemical science and technology","volume":" ","pages":""},"PeriodicalIF":3.7,"publicationDate":"2023-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43743630","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Electrochemical Behavior of AZ31 Mg Alloy in Neutral Aqueous Solutions Containing Various Anions AZ31镁合金在含多种阴离子中性水溶液中的电化学行为

IF 3.7 4区工程技术

Journal of electrochemical science and technology Pub Date : 2023-06-14 DOI: 10.33961/jecst.2023.00213

Duyoung Kwon, Hien Pham, Pung-Geun Song, S. Moon

{"title":"Electrochemical Behavior of AZ31 Mg Alloy in Neutral Aqueous Solutions Containing Various Anions","authors":"Duyoung Kwon, Hien Pham, Pung-Geun Song, S. Moon","doi":"10.33961/jecst.2023.00213","DOIUrl":"https://doi.org/10.33961/jecst.2023.00213","url":null,"abstract":"This work was performed to characterize the electrochemical behavior of AZ31 Mg alloy in neutral aqueous solutions where Cl - , SO 42- , PO 43- , and F - ions were present and pH was adjusted to 6 to exclude the contribution of H + and OH - ions. Open-circuit potential (OCP) transient, electrochemical impedance spectroscopy (EIS) and potnetiodynamic polarization curves were employed. The OCP value appeared to decrease in the order of F - > Cl - > SO 42- > PO 43- ions while corrosion current density increased in the same order. Electrochemical impedance spectroscopy (EIS) data showed two capacitive arcs in all the solutions and one more inductive arc appeared in PO 43- -containing solution. By fitting of two capacitive arcs, capacitance of dense film (C df ), resistance of porous film (R pf ) and double layer capacitance (C dl ) and charge transfer resistance (R ct ) beneath the porous films were obtained. A simplified model in which various thicknesses and coverages of dense and porous films are assumed to be present on the AZ31 Mg alloy surface, is suggested to explain the effects of four different anions on the electrochemical behavior of AZ31 Mg alloy.","PeriodicalId":15542,"journal":{"name":"Journal of electrochemical science and technology","volume":" ","pages":""},"PeriodicalIF":3.7,"publicationDate":"2023-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45189114","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1