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Issue:
Catholyte electrolyte stability for all-vanadium redox battery
Author(s):
LI Xiaoshan1
,
2
,
XIE Xiaofeng2
,
Lü Yafei1
Pages:
140
-
143
Year:
2011
Issue:
S2
Journal:
Journal of Chemical Industry and Engineering(China)
Keyword:
钒电池
;
阴极电解液
;
添加剂
;
荷电状态
;
Abstract:
在钒硫酸溶液中加入添加剂,对钒电池阴极电解液的稳定性进行了研究。利用循环伏安法和交流阻抗法分别对含1%的草酸、草酸铵、乙二胺四乙酸、葡萄糖、D-果糖、α-乳糖的V(Ⅲ)硫酸溶液进行了分析测试。实验结果表明:添加上述添加剂后,溶液中V(Ⅲ)的溶解度和稳定性有所提高,羧酸类化合物比羟基类化合物的效果更加明显,更适合作为阴极电解液的添加剂。当采用1%草酸的1.8mol.L-1 V(Ⅲ)硫酸溶液作为阴极电解液和2mol.L-1 VOSO4硫酸溶液作为阳极电解液组装钒电池时,电池的充放电性能表明此时钒硫酸溶液具有较高的单位体积电容量。
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