ChemElectroChem最新文献_第10页

Single-Particle Measurement: A Valuable Method for Studying Structural Evolution of Battery and Performance Degradation 单粒子测量：研究电池结构演变和性能退化的一种有价值的方法

IF 3.5 4区化学

ChemElectroChem Pub Date : 2024-12-04 DOI: 10.1002/celc.202400529

Xin Zhang, Na Li, Xu Li, Le Yang, Wei-Li Song, Ya-Na Wang

{"title":"Single-Particle Measurement: A Valuable Method for Studying Structural Evolution of Battery and Performance Degradation","authors":"Xin Zhang, Na Li, Xu Li, Le Yang, Wei-Li Song, Ya-Na Wang","doi":"10.1002/celc.202400529","DOIUrl":"https://doi.org/10.1002/celc.202400529","url":null,"abstract":"Active particle materials with high capacity, safety, and abundance, such as Sn and Si-based materials, and nickel-rich layered materials like LiNixCoyMn1−x−yO2 (with x≥0.8) are viewed as promising candidates for the evolution of next-generation batteries. However, structural degradation during cycling often limits the application of these active particle materials. Currently, research efforts are focused on developing new characterization techniques to understand the structural degradation mechanisms of active particle materials during the cycle, to improve their performance. This paper reviews advanced single-particle electrochemical and structural characterization techniques and their main findings. These findings included lattice displacement and rotation, microstructure evolution, and reaction kinetics of single-particle during cycling. In addition, we also discuss the potential future applications and developments of single-particle measurement technologies.","PeriodicalId":142,"journal":{"name":"ChemElectroChem","volume":"12 3","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/celc.202400529","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143111784","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Front Cover: (ChemElectroChem 23/2024) 封面：（ChemElectroChem 23/2024）

IF 3.5 4区化学

ChemElectroChem Pub Date : 2024-12-02 DOI: 10.1002/celc.202482301

引用次数: 0

Role of Interfacial Potential Drops on Redox-Couple Dependent Voltages Using Hybridized Si(111)–(Bis)Anthracene Photoelectrodes 杂化Si(111) -（双）蒽光电极界面电位下降对氧化还原偶依赖电压的影响

IF 3.5 4区化学

ChemElectroChem Pub Date : 2024-11-28 DOI: 10.1002/celc.202400468

Hark Jin Kim, Michael J. Rose

{"title":"Role of Interfacial Potential Drops on Redox-Couple Dependent Voltages Using Hybridized Si(111)–(Bis)Anthracene Photoelectrodes","authors":"Hark Jin Kim, Michael J. Rose","doi":"10.1002/celc.202400468","DOIUrl":"https://doi.org/10.1002/celc.202400468","url":null,"abstract":"We investigate the flat band voltage (VFB) of silicon (Si) surfaces functionalized with methyl (Me), 9-anthracene (Anth), 1,8-anthracene (DiAnth; two attachment points), and 9-bianthracene (BiAnth) on n-type and p-type Si substrates. Flat band potential (EFB, by Mott-Schottky) provided VFB (or VBI) dependent on the contacted redox couple (ERedox). On p-type Si, VFB increased linearly until a limiting value was reached; similarly, the n-type Si VFB decreased linearly until it plateaued at more negative potentials. Notably, the slope of VFB depended on the surface modifier, exhibiting opposite trends for p-type and n-type Si. Curiously, anthracene-functionalized p-Si exhibited an unexpectedly more shallow (and beneficial) slope than -methyl, attributed to the polarizability of the anthracene π electron cloud and a potential drop across the molecular interface. On n-type Si, anthracene-functionalized surfaces displayed a higher slope than -methyl, suggesting a gradual cancellation of the voltage shift effect due to a fixed surface dipole. We also quantified the interfacial potential drop across p-Si–Anth as 275 mV using variable frequency (10 kHz vs 1 kHz) Mott-Schottky analysis. The interfacial potential drop and dipoles that result from molecular functionalization are thus critical design parameters for PEC cells that utilize moderate-potential redox couples or reactions; however, such effects are negligible with redox couples that reside at or beyond the semiconductor band-edge.","PeriodicalId":142,"journal":{"name":"ChemElectroChem","volume":"11 24","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/celc.202400468","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143120325","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

In-Situ AFM Study of Zinc Electrodeposition in a Deep Eutectic Solvent 深共晶溶剂中锌电沉积的原位AFM研究

IF 3.5 4区化学

ChemElectroChem Pub Date : 2024-11-28 DOI: 10.1002/celc.202400538

Ting Wang, Xintao Xu, Kaixuan Li, Yuteng Fan, Hao Yan, Feng Zhu, Jianzhang Zhou, Jiawei Yan, Bingwei Mao

{"title":"In-Situ AFM Study of Zinc Electrodeposition in a Deep Eutectic Solvent","authors":"Ting Wang, Xintao Xu, Kaixuan Li, Yuteng Fan, Hao Yan, Feng Zhu, Jianzhang Zhou, Jiawei Yan, Bingwei Mao","doi":"10.1002/celc.202400538","DOIUrl":"https://doi.org/10.1002/celc.202400538","url":null,"abstract":"Zinc-based batteries are promising for applications in large-scale energy storage and other scenarios due to their high voltage, large theoretical capacity, and abundant reserves. Compared to traditional aqueous electrolytes, deep eutectic solvents (DESs) offer advantages such as wide electrochemical window, good stability, and fewer parasitic reactions. They can effectively regulate the growth morphology of zinc deposits and suppress dendrite formation during zinc deposition/stripping processes. However, there is currently a lack of direct observation for underlying mechanisms of zinc deposition/stripping processes in DESs. In this study, combined with electrochemical methods, in-situ atomic force microscopy (in-situ AFM) has been utilized to investigate the deposition behavior of zinc metal from ZnCl2 precursor in a deep eutectic solvent composed of choline chloride and ethylene glycol (ethaline). Cyclic voltammetric measurements indicate that zinc deposition is a kinetically controlled process. And in-situ AFM reveals the hexagonal morphology and layered deposition of zinc on highly oriented pyrolytic graphite (HOPG). Our observations benefit the understanding of the kinetics of zinc deposition/stripping in deep eutectic solvent ethaline at a microscopic level.","PeriodicalId":142,"journal":{"name":"ChemElectroChem","volume":"12 2","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/celc.202400538","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143120525","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Strain Engineering of Single-Atom Catalysts for Electrochemical Conversion 电化学转化单原子催化剂的应变工程

IF 3.5 4区化学

ChemElectroChem Pub Date : 2024-11-27 DOI: 10.1002/celc.202400535

Youxuan Ni, Yong Lu, Weiwei Xie, Jun Chen

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Utility of Immobilized Metal Salens as Electrocatalysts: Fuel Cells and Organic Electrosynthesis 固定化金属盐作为电催化剂的用途：燃料电池和有机电合成

IF 3.5 4区化学

ChemElectroChem Pub Date : 2024-11-26 DOI: 10.1002/celc.202400445

Zachary A. Nguyen, Shelley D. Minteer

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CORRIGENDUM: Correction to “Industrially Relevant Conditions in Lab-Scale Analysis for Alkaline Water Electrolysis” 更正：对“实验室规模碱水电解分析的工业相关条件”的更正

IF 3.5 4区化学

ChemElectroChem Pub Date : 2024-11-25 DOI: 10.1002/celc.202400553

引用次数: 0

Multi-Electron Transfer Organic Cathode for High-Performance Aqueous Zinc-Ion Batteries 高性能水性锌离子电池用多电子转移有机阴极

IF 3.5 4区化学

ChemElectroChem Pub Date : 2024-11-22 DOI: 10.1002/celc.202400540

Dr. Jiaoyi Ning

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Enhanced Electrochemical Performance of Vanadium Redox Flow Batteries Using Li4Ti5O12/TiO2 Nanocomposite-Modified Graphite Felt Electrodes Li4Ti5O12/TiO2纳米复合改性石墨毡电极增强钒氧化还原液流电池电化学性能

IF 3.5 4区化学

ChemElectroChem Pub Date : 2024-11-21 DOI: 10.1002/celc.202400477

Zih-Jhong Huang, Daniel Manaye Kabtamu, Aknachew Mebreku Demeku, Guan-Cheng Chen, Ning-Yih Hsu, Hung-Hsien Ku, Yao-Ming Wang, Tai-Chin Chiang, Chen-Hao Wang

{"title":"Enhanced Electrochemical Performance of Vanadium Redox Flow Batteries Using Li4Ti5O12/TiO2 Nanocomposite-Modified Graphite Felt Electrodes","authors":"Zih-Jhong Huang, Daniel Manaye Kabtamu, Aknachew Mebreku Demeku, Guan-Cheng Chen, Ning-Yih Hsu, Hung-Hsien Ku, Yao-Ming Wang, Tai-Chin Chiang, Chen-Hao Wang","doi":"10.1002/celc.202400477","DOIUrl":"https://doi.org/10.1002/celc.202400477","url":null,"abstract":"In this study, Li4Ti5O12 (LTO) and TiO2 nanocomposites uniformly were synthesized on the heat-treated graphite felt through (HGF) hydrothermal and heat treatment methods, denoted by LTO/TiO2@HGF, which LTO/TiO2@HGF acts as effective electrocatalysts to enhance the electrochemical activity in vanadium redox flow battery (VRFB) systems. The cyclic voltammetry (CV) curves of the LTO/TiO2@HGF show higher peak current densities and smaller peak separation than TiO2@HGF, HGF, and pristine graphite felt (PGF) for catalyzing V2+/V3+ and VO₂+/VO2+, indicating superior electrochemical activity of LTO/TiO2@HGF. The VRFB using LTO/TiO2@HGF as the positive and negative electrodes demonstrates an energy efficiency of 82.89 % at 80 mA cm−2. When the VRFB using LTO/TiO2@HGF is applied by a high current density of 200 mA cm−2, it still shows an energy efficiency of 62.22 %. However, the VRFB using PGF cannot perform any performance, and the VRFB using HGF only performs 51.94 %. This improvement can be attributed to the uniform distribution of LTO/TiO2 nanowires on the surface of the graphite felt and the presence of oxygen vacancies on LTO/TiO2, which increased the number of active sites for vanadium ion absorption.","PeriodicalId":142,"journal":{"name":"ChemElectroChem","volume":"12 2","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/celc.202400477","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143117546","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Machine Learning Exploration of Experimental Conditions for Optimized Electrochemical CO2 Reduction 优化电化学CO2还原实验条件的机器学习探索

IF 3.5 4区化学

ChemElectroChem Pub Date : 2024-11-21 DOI: 10.1002/celc.202400518

Vuri Ayu Setyowati, Shiho Mukaida, Kaito Nagita, Takashi Harada, Shuji Nakanishi, Kazuyuki Iwase

{"title":"Machine Learning Exploration of Experimental Conditions for Optimized Electrochemical CO2 Reduction","authors":"Vuri Ayu Setyowati, Shiho Mukaida, Kaito Nagita, Takashi Harada, Shuji Nakanishi, Kazuyuki Iwase","doi":"10.1002/celc.202400518","DOIUrl":"https://doi.org/10.1002/celc.202400518","url":null,"abstract":"Electrochemical CO2 reduction has attracted significant attention as a potential method to close the carbon cycle. In this study, we investigated the impact of the electrode fabrication and electrolysis conditions on the product selectivity of Ag electrocatalysts using a machine learning (ML) approach. Specifically, we explored the experimental conditions for obtaining the desired H2/CO mixture ratio with high CO efficiency. Notably, unlike previous ML-based studies, we used experimental results as training data. This ML-based approach allowed us to quantitatively assess the effect of experimental parameters on these targets with a reduced number of experimental trials (only 56 experiments). An inverse analysis based on the ML model suggested the optimal experimental conditions for achieving the desired characteristics of the electrolysis system, with the proposed conditions experimentally validated. This study constitutes the first demonstration of optimal experimental conditions for electrochemical CO2 reduction with desired characteristics using the experimental results as training data.","PeriodicalId":142,"journal":{"name":"ChemElectroChem","volume":"11 24","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/celc.202400518","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143117585","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0