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Influence of Several Phosphate-Containing Additives on the Stability and Electrochemical Behavior of Positive Electrolytes for Vanadium Redox Flow Battery

文献类型：期刊论文

作者Zhang, Xukun1,2,3; Meng, Fancheng1,2,3; Sun, Linquan1,2,3; Zhu, Zhaowu1,2; Chen, Desheng1,2,4; Wang, Lina1,2,3
刊名ENERGIES
出版日期2022-11-01
卷号15期号:21页码:14
关键词vanadium redox flow battery positive electrolyte phosphate containing additives stability electrochemical behavior
DOI10.3390/en15217829
英文摘要The poor operational stability of electrolytes is a persistent impediment in building redox flow battery technology; choosing suitable stability additives is usually the research direction to solve this problem. The effects of five phosphate containing additives (including 1-hydroxyethylidene-1,1-diphosphonic acid (HEDP), hexamethylene diamine tetramethylene phosphonic acid (HDTMPA), amino trimethylene phosphonic acid (ATMPA), sodium ethylenediamine tetramethylene phosphonate (EDTMPS), and diethyl triamine pentamethylene phosphonic acid (DTPMP)) on the thermal stability and electrochemical performance of the positive electrolyte of vanadium redox flow battery were investigated. With 0.5 wt% addition, most of the selected additives were able to improve the thermal stability of the electrolyte. HEDP and HDTMPA extended the stability time of the pentavalent vanadium electrolyte at 50 degrees C from 5 days (blank sample) to 30 days and 15 days, respectively. The electrochemical performance of the electrolyte was further investigated by cyclic voltammetry, steady state polarization, and electrochemical impedance spectroscopy tests. It was found that most of the additives enhanced the electrochemical activity of the positive electrolyte, and the diffusion coefficients, exchange current densities, and reaction rate constants of V(IV) species became larger with the addition of these additives. It is verified that the thermal stability and electrochemical stability of the electrolyte are significantly improved by the combination of ATMPA + HEDP or ATMPA + HDTMPA. This study provides a new approach to improve the stability of the positive electrolyte for vanadium redox flow battery.
WOS关键词ORGANIC ADDITIVES ; MIXED ACID
资助项目National Key R&D Program of China[2018YFC1900500] ; National Natural Science Foundation of China[51804289] ; General project of Beijing Municipal Natural Science Foundation[2202053] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDC04010100] ; Special Project for Transformation ofMajor TechnologicalAchievements inHebei Province[19044012Z] ; Province Key R&D Program of Hebei[20374105D]
WOS研究方向Energy & Fuels
语种英语
出版者MDPI
WOS记录号WOS:000881263600001
资助机构National Key R&D Program of China ; National Natural Science Foundation of China ; General project of Beijing Municipal Natural Science Foundation ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Special Project for Transformation ofMajor TechnologicalAchievements inHebei Province ; Province Key R&D Program of Hebei
源URL[http://ir.ipe.ac.cn/handle/122111/55570]  
专题中国科学院过程工程研究所
通讯作者Meng, Fancheng; Wang, Lina
作者单位1.Chinese Acad Sci, Inst Proc Engn, Key Lab Green Proc & Engn, Beijing 100190, Peoples R China
2.Chinese Acad Sci, Inst Proc Engn, Natl Engn Res Ctr Green Recycling Strateg Met Res, Beijing 100190, Peoples R China
3.Univ Chinese Acad Sci, Sch Chem Engn, Beijing 101408, Peoples R China
4.Hebei Zhongke Tongchuang Vanadium & Titanium Tech, Hengshui 053000, Peoples R China
推荐引用方式
GB/T 7714		 Zhang, Xukun,Meng, Fancheng,Sun, Linquan,et al. Influence of Several Phosphate-Containing Additives on the Stability and Electrochemical Behavior of Positive Electrolytes for Vanadium Redox Flow Battery[J]. ENERGIES,2022,15(21):14.
APA Zhang, Xukun,Meng, Fancheng,Sun, Linquan,Zhu, Zhaowu,Chen, Desheng,&Wang, Lina.(2022).Influence of Several Phosphate-Containing Additives on the Stability and Electrochemical Behavior of Positive Electrolytes for Vanadium Redox Flow Battery.ENERGIES,15(21),14.
MLA Zhang, Xukun,et al."Influence of Several Phosphate-Containing Additives on the Stability and Electrochemical Behavior of Positive Electrolytes for Vanadium Redox Flow Battery".ENERGIES 15.21(2022):14.

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来源：过程工程研究所

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