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Analyses and optimization of electrolyte concentration on the electrochemical performance of iron-chromium flow battery
Wang, Shaoliang1,2; Xu, Zeyu1,2; Wu, Xiaoliang1; Zhao, Huan1; Zhao, Jinling1; Liu, Jianguo1,2; Yan, Chuanwei1,2; Fan, Xinzhuang1
Corresponding AuthorLiu, Jianguo(jgliu@imr.ac.cn) ; Fan, Xinzhuang(mexzfan@gmail.com)
2020-08-01
Source PublicationAPPLIED ENERGY
ISSN0306-2619
Volume271Pages:8
AbstractIn order to improve the electrochemical performance of iron-chromium flow battery, a series of electrolytes with x M FeCl2 + x M CrCl3 + 3.0 M HCl (x = 0.5, 0.75, 1.0, 1.25) and 1.0 M FeCl2 + 1.0 M CrCl3 + y M HCl (y = 1.0, 2.0, 3.0, 4.0) are prepared, and the effect of electrolyte concentration on the electrochemical performance of iron-chromium flow battery are firstly investigated. The viscosity of electrolyte increases along with the increasing concentration of FeCl2, CrCl3 and HCl, however, the corresponding conductivity decreases with the increasing concentration of FeCl2 and CrCl3 but increases with the increasing HCl concentration. It is worth noting that the electrolyte with 1.0 M FeCl2, 1.0 M CrCl3 and 3.0 M HCl presents the best electrochemical performance due to the synergistic effect of viscosity, conductivity and electrochemical activity. Most importantly, iron-chromium flow battery with the optimized electrolyte presents excellent battery efficiency (coulombic efficiency: 97.4%; energy efficiency: 81.5%) when the operating current density is high up to 120 mA cm(-2). This work can improve the battery performance of iron-chromium flow battery more efficiently, and further provide theoretical guidance and data support to its engineering application.
KeywordIron-chromium flow battery Electrolyte Concentration optimization Electrochemical activity Battery performance
Funding OrganizationNational Nature Science Foundation of China ; Open project of State Key Laboratory of Heavy Oil Processing in China University of Petroleum
DOI10.1016/j.apenergy.2020.115252
Indexed BySCI
Language英语
Funding ProjectNational Nature Science Foundation of China[21975267] ; National Nature Science Foundation of China[21703263] ; National Nature Science Foundation of China[21573257] ; Open project of State Key Laboratory of Heavy Oil Processing in China University of Petroleum[Y7F1911191]
WOS Research AreaEnergy & Fuels ; Engineering
WOS SubjectEnergy & Fuels ; Engineering, Chemical
WOS IDWOS:000540436500037
PublisherELSEVIER SCI LTD
Citation statistics
Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/139235
Collection中国科学院金属研究所
Corresponding AuthorLiu, Jianguo; Fan, Xinzhuang
Affiliation1.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China
Recommended Citation
GB/T 7714
Wang, Shaoliang,Xu, Zeyu,Wu, Xiaoliang,et al. Analyses and optimization of electrolyte concentration on the electrochemical performance of iron-chromium flow battery[J]. APPLIED ENERGY,2020,271:8.
APA Wang, Shaoliang.,Xu, Zeyu.,Wu, Xiaoliang.,Zhao, Huan.,Zhao, Jinling.,...&Fan, Xinzhuang.(2020).Analyses and optimization of electrolyte concentration on the electrochemical performance of iron-chromium flow battery.APPLIED ENERGY,271,8.
MLA Wang, Shaoliang,et al."Analyses and optimization of electrolyte concentration on the electrochemical performance of iron-chromium flow battery".APPLIED ENERGY 271(2020):8.
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