中文版 | English
Title

Super-resolved dynamics of isolated zinc formation during extremely fast electrochemical deposition/dissolution processes

Author
Corresponding AuthorHao,Rui
Publication Years
2022-10-12
DOI
Source Title
ISSN
2041-6520
EISSN
2041-6539
Volume111
Abstract
The development of zinc-air batteries with high-rate capability and long lifespan is critically important for their practical use, especially in smart grid and electric vehicle application. The formation of isolated zinc (i-Zn) on the zinc anode surface, however, could easily lead to deteriorated performance, such as rapid capacity decay. In particular, under the fast charging/discharging conditions, the electrochemical activities on the anode surface are complicated and severely suppressed. Thus, it is highly desirable to deeply understand the formation mechanism of i-Zn and its relationship with the electrochemical performance during extremely high-rate cycling. Herein, we employed a super-resolution dark-field microscope to in situ analyze the evolution dynamics of the electrolyte-Zn interface during the extremely fast electrochemical deposition/dissolution processes. The unique phenomenon of nanoscopic i-Zn generation under the condition is unveiled. We discovered that the rapid conversion of nanoscopic i-Zn fragments into passivated products could greatly exacerbate the concentration polarization process and increase the overpotential. In addition, the role of large-sized i-Zn fragments in reducing the coulombic efficiency is further elucidated. This information could aid the rational design of highly effective anodes for extremely high-rate zinc-based batteries and other battery systems.
URL[Source Record]
Indexed By
Language
English
Important Publications
NI Journal Papers
SUSTech Authorship
First ; Corresponding
Funding Project
National Natural Science Foundation of China["22150410330","22074059"] ; Pearl River Talent Recruitment Program[2019QN01L096] ; Guangdong Innovative and Entrepreneurial Research Team Program[2019ZT08L075]
WOS Research Area
Chemistry
WOS Subject
Chemistry, Multidisciplinary
WOS Accession No
WOS:000871393600001
Publisher
Scopus EID
2-s2.0-85141465352
Data Source
Scopus
Citation statistics
Cited Times [WOS]:1
Document TypeJournal Article
Identifierhttp://kc.sustech.edu.cn/handle/2SGJ60CL/411839
DepartmentDepartment of Chemistry
Affiliation
1.Department of Chemistry,Research Center for Chemical Biology and Omics Analysis,Southern University of Science and Technology,Shenzhen,518055,China
2.School of Environment and Energy,South China University of Technology,Guangzhou,510640,China
3.Institute of Chemistry,Khwaja Fareed University of Engineering & Information Technology,Rahim Yar Khan,64200,Pakistan
First Author AffilicationDepartment of Chemistry
Corresponding Author AffilicationDepartment of Chemistry
First Author's First AffilicationDepartment of Chemistry
Recommended Citation
GB/T 7714
Mao,Jiaxin,Li,Guopeng,Saqib,Muhammad,et al. Super-resolved dynamics of isolated zinc formation during extremely fast electrochemical deposition/dissolution processes[J]. Chemical Science,2022,111.
APA
Mao,Jiaxin,Li,Guopeng,Saqib,Muhammad,Xu,Jiantie,&Hao,Rui.(2022).Super-resolved dynamics of isolated zinc formation during extremely fast electrochemical deposition/dissolution processes.Chemical Science,111.
MLA
Mao,Jiaxin,et al."Super-resolved dynamics of isolated zinc formation during extremely fast electrochemical deposition/dissolution processes".Chemical Science 111(2022).
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