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Effects of phosphate additives on the stability of positive electrolytes for vanadium flow batteries
Ding, Cong1,2; Ni, Xiao2,3; Li, Xianfeng1; Xi, Xiaoli1,2; Han, Xiuwen3; Bao, Xinhe3; Zhang, Huamin1
关键词Energy Storage Vanadium Flow Batteries Precipitate Phosphate Additives Capacity Retention
刊名ELECTROCHIMICA ACTA
2015-05-01
DOI10.1016/j.electacta.2015.02.187
164页:307-314
收录类别SCI
文章类型Article
WOS标题词Science & Technology ; Physical Sciences
类目[WOS]Electrochemistry
研究领域[WOS]Electrochemistry
关键词[WOS]REDOX BATTERY ; ELECTROCHEMICAL-BEHAVIOR ; ORGANIC ADDITIVES ; ENERGY-STORAGE ; V(V) ELECTROLYTE ; CELL ELECTROLYTE ; ACID ; PYROPHOSPHATE ; PRECIPITATION ; PERFORMANCE
英文摘要A series of phosphates is investigated as additives to improve the stability of the electrolyte for vanadium flow battery (VFB). Two selected additives show positive effect on the stability of electrolytes under ex-situ stability tests and in situ flow cell experiments. The effects of additives on electrolyte are studied by Nuclear magnetic resonance (NMR), X-ray diffraction (XRD), Raman spectroscopy, Cyclic voltammetry (CV), Electrochemical impedance spectroscopy (EIS) and charge-discharge test. The results show that a VFB using the electrolyte with NH(4)H(2)PO(4)additive demonstrates significantly improved redox reaction reversibility and activity, and higher energy efficiency. In addition, the cell employing the electrolyte with NH4H2PO4 exhibits a charge capacity fading rate much slower than the cell without additives during the cycling at high temperature. These results indicate that the phosphate additives are highly beneficial to improving the stability and reliability of VFB. (C) 2015 Elsevier Ltd. All rights reserved.
语种英语
WOS记录号WOS:000352499000037
引用统计
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/146153
专题中国科学院大连化学物理研究所
作者单位1.Chinese Acad Sci, Div Energy Storage, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, Dalian 116023, Liaoning, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100039, Peoples R China
3.Chinese Acad Sci, State Key Lab Catalysis, Dalian Inst Chem Phys, Dalian 116023, Liaoning, Peoples R China
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Ding, Cong,Ni, Xiao,Li, Xianfeng,et al. Effects of phosphate additives on the stability of positive electrolytes for vanadium flow batteries[J]. ELECTROCHIMICA ACTA,2015,164:307-314.
APA Ding, Cong.,Ni, Xiao.,Li, Xianfeng.,Xi, Xiaoli.,Han, Xiuwen.,...&Zhang, Huamin.(2015).Effects of phosphate additives on the stability of positive electrolytes for vanadium flow batteries.ELECTROCHIMICA ACTA,164,307-314.
MLA Ding, Cong,et al."Effects of phosphate additives on the stability of positive electrolytes for vanadium flow batteries".ELECTROCHIMICA ACTA 164(2015):307-314.
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