Electrochemistry Communications最新文献_第2页

A multiphase model for exploring electrochemical Marangoni flow 用于探测电化学Marangoni流的多相模型

IF 5.4 3区工程技术

Electrochemistry Communications Pub Date : 2023-10-01 DOI: 10.1016/j.elecom.2023.107567

E. Karimi-Sibaki , A. Vakhrushev , A. Kadylnykova , M. Wu , A. Ludwig , J. Bohacek , A. Kharicha

引用次数: 0

Using a pressurized GDE setup to analyze effects of temperature and relative humidity on CO-stripping measurements on a commercial Pt/C ORR catalyst 使用加压GDE装置分析温度和相对湿度对商用Pt/C ORR催化剂co剥离测量的影响

IF 5.4 3区工程技术

Electrochemistry Communications Pub Date : 2023-10-01 DOI: 10.1016/j.elecom.2023.107565

Sven Nösberger, Gustav K. H. Wiberg, Matthias Arenz

{"title":"Using a pressurized GDE setup to analyze effects of temperature and relative humidity on CO-stripping measurements on a commercial Pt/C ORR catalyst","authors":"Sven Nösberger, Gustav K. H. Wiberg, Matthias Arenz","doi":"10.1016/j.elecom.2023.107565","DOIUrl":"10.1016/j.elecom.2023.107565","url":null,"abstract":"<div>This study successfully showcases the capabilities of a newly developed pressurized gas diffusion electrode (GDE) setup by conducting cyclic voltammetry and CO stripping measurements at temperatures up to 120 °C, while considering various relative humidity (RH) levels. Our results clearly demonstrate the feasibility of investigating the effects of RH and elevated temperatures above 100 °C using the pressurized GDE setup. In particular, a negative shift in the CO oxidation peak potential upon increasing temperatures is observed, whereas a reduction in RH leads to a positive potential shift of the CO oxidation peak as well as peak broadening. Additionally, our results highlight the heightened sensitivity of the Hupd peak to changes in temperature and RH, resulting in an underestimation of the electrochemically active surface area (ECSA). An essential aspect of this research is the successful replication of trends observed in membrane electrode assembly (MEA) measurements, providing strong validation for the reliability and effectiveness of our pressurized GDE approach as a valuable bridging tool toward MEA testing at elevated temperatures.</div>","PeriodicalId":304,"journal":{"name":"Electrochemistry Communications","volume":"155 ","pages":"Article 107565"},"PeriodicalIF":5.4,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S138824812300139X/pdfft?md5=8990eeb40acc343eb3e8c6aca548a8f5&pid=1-s2.0-S138824812300139X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43897333","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Disordered GaSiP solid solution anodes with liquid metal phase for high-performance Li-ion batteries 高性能锂离子电池用液态金属相无序GaSiP固溶阳极

IF 5.4 3区工程技术

Electrochemistry Communications Pub Date : 2023-10-01 DOI: 10.1016/j.elecom.2023.107566

Xiao Liu , Yanhong Li , Wen He , Zhiqiang Xiong , Weijian Li , Yunyong Li , Wenwu Li

{"title":"Disordered GaSiP solid solution anodes with liquid metal phase for high-performance Li-ion batteries","authors":"Xiao Liu , Yanhong Li , Wen He , Zhiqiang Xiong , Weijian Li , Yunyong Li , Wenwu Li","doi":"10.1016/j.elecom.2023.107566","DOIUrl":"10.1016/j.elecom.2023.107566","url":null,"abstract":"<div>Silicon (Si) has become the most promising next-generation anode to replace commercial graphite for Li-ion batteries (LIBs) profiting from its large reversible capacity of 4,200 mA h g−1. However, its sluggish reaction kinetics and large volume effect need to be resolved. Herein, we prepare a ternary GaSiP solid solution with a disordered lattice by a facile mechanochemistry method. As anodes of LIBs, the GaSiP provides a reversible capacity of 1,527 mA h g−1 at 100 mA g−1 with an initial Coulombic efficiency (ICE) of 90.8% based on the reversible Li-storage mechanism integrated intercalation and subsequent conversion processes as confirmed by crystallography characterization and electrochemical measurements. Importantly, the GaSiP carbon composite presents a long cycling stability of maintaining 1,362 mA h g−1 after 50 cycles at 0.1 A g−1, and 75% capacity retention rate after 1,200 cycles at 2 A g−1, and a high-rate performance of remaining 440 mA h g−1 at 20 A g−1. Broadly, this work opens the door to develop ternary phosphides with disordered lattice and liquid metallic phase using for electrochemical energy conversion and storage.</div>","PeriodicalId":304,"journal":{"name":"Electrochemistry Communications","volume":"155 ","pages":"Article 107566"},"PeriodicalIF":5.4,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1388248123001406/pdfft?md5=afcfb66374e8e52b3abd8c5675ee6840&pid=1-s2.0-S1388248123001406-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42496085","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Reductive deposition of aluminum at a water-free ionic liquid/oil interface 铝在无水离子液体/油界面上的还原沉积

IF 5.4 3区工程技术

Electrochemistry Communications Pub Date : 2023-09-05 DOI: 10.1016/j.elecom.2023.107575

Naohiro Yoshida, Yohei Kuroyama, Yuko Yokoyama, Tetsuo Sakka, Naoya Nishi

引用次数: 0

Flow electrosynthesis for efficient O-trifluoromethylation of electron-deficient phenols 缺电子酚的高效o -三氟甲基化的流动电合成

IF 5.4 3区工程技术

Electrochemistry Communications Pub Date : 2023-09-01 DOI: 10.1016/j.elecom.2023.107545

Johannes Bernd, Andreas Terfort

引用次数: 0

Electrically conductive metal oxide-Assisted multifunctional separator for highly stable Lithium-Metal batteries 用于高稳定锂金属电池的导电金属氧化物辅助多功能分离器

IF 5.4 3区工程技术

Electrochemistry Communications Pub Date : 2023-09-01 DOI: 10.1016/j.elecom.2023.107558

Junghwan Kim , Kihwan Kwon , Kwangchul Roh , Jiseok Kwon , Taeseup Song , Patrick Joohyun Kim , Junghyun Choi

{"title":"Electrically conductive metal oxide-Assisted multifunctional separator for highly stable Lithium-Metal batteries","authors":"Junghwan Kim , Kihwan Kwon , Kwangchul Roh , Jiseok Kwon , Taeseup Song , Patrick Joohyun Kim , Junghyun Choi","doi":"10.1016/j.elecom.2023.107558","DOIUrl":"10.1016/j.elecom.2023.107558","url":null,"abstract":"<div>Lithium (Li) metal anodes have received intensive attention owing to its high specific capacity and low redox potential. However, chronic issues related to dendritic Li growth have hindered the pragmatic use of Li-metal batteries (LMBs). As one of feasible approaches, depositing a functional material on the separator is an efficient strategy for improving the electrochemical stability of LMBs. In this paper, we report a functionalized separator, comprising a nitrided niobium dioxide (named as n-NbO2) and a polypropylene (PP) separator. It is identified that niobium oxide interact with metallic Li, resulting in redistributing the localized Li ion. The n-NbO2-coated separator with enhanced electrical conductivity promotes Li plating/stripping process, reinforcing the Li ion redistribution effect. Due to these properties, Li-Cu cells with the n-NbO2-coated separator show the most outstanding cycle stability with high Coulombic efficiency (CE) over 200 cycles.</div>","PeriodicalId":304,"journal":{"name":"Electrochemistry Communications","volume":"154 ","pages":"Article 107558"},"PeriodicalIF":5.4,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1388248123001327/pdfft?md5=8cf1f25b89ff62d2845e642c34b68e80&pid=1-s2.0-S1388248123001327-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42591973","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

In situ Raman study of high potential scan enhanced Pt/C and Pd/C catalyst performance for ethanol oxidation 高电位扫描增强Pt/C和Pd/C催化剂乙醇氧化性能的原位拉曼光谱研究

IF 5.4 3区工程技术

Electrochemistry Communications Pub Date : 2023-09-01 DOI: 10.1016/j.elecom.2023.107561

Fengping Hu , Jinchang Xu , Lin Wei , Zhenyou Wang , Fangming Jiang

引用次数: 0

Study on potential gradient in Ti anodization 钛阳极氧化电位梯度的研究

IF 5.4 3区工程技术

Electrochemistry Communications Pub Date : 2023-09-01 DOI: 10.1016/j.elecom.2023.107546

Longfei Jiang , Xiangxiang Zhu , Pengze Li , Binye Chen , Shaoyu Zhang , Xufei Zhu

引用次数: 0

Formation of an organic film on an electrode via a suspension of redox-active droplets in acidic aqueous solution 通过在酸性水溶液中悬浮氧化还原活性液滴在电极上形成有机薄膜

IF 5.4 3区工程技术

Electrochemistry Communications Pub Date : 2023-09-01 DOI: 10.1016/j.elecom.2023.107544

Katarzyna Dusilo , Aleksandra Siwiec , Marcin Holdynski , Pekka Peljo , Marcin Opallo

引用次数: 0

Linear transformations of the Butler–Volmer equation Butler-Volmer方程的线性变换

IF 5.4 3区工程技术

Electrochemistry Communications Pub Date : 2023-09-01 DOI: 10.1016/j.elecom.2023.107556

Zoltán Lukács, Tamás Kristóf

引用次数: 0