钒电池电解液荷电状态的快速测定方法  

RAPID DETERMINATION METHOD OF CHARGE STATE OF VFB ELECTROLYTE

作　　者：杨文君 李敏 曹维平 房少华 

机构地区：[1]承德新新钒钛储能科技有限公司,河北承德067002 [2]河钢承钢钒钛事业部,河北承德067002

出　　处：《河北冶金》2017年第12期62-64,共3页Hebei Metallurgy

摘　　要：钒电池运行过程中,钒元素化合价为+5、+4、+3、+2,不同价态的钒离子呈现不同的颜色。按照不同颜色溶液在特定波长处存在吸收峰的规律,采用分光光度法检测不同价态钒离子浓度,从而快速准确测定电解液的荷电状态,该检测方法的加标回收率为99%~101%。同时,比较了用滴定法和分光光度法检测钒离子的误差,检测误差均小于0.1%。The valence of vanadium is + 5,+ 4,+ 3,and + 2 during the operation process of vanadium battery.Vanadium ions present different colors in different valence states. According to the law of the absorption peaks of different color solutions at specific wavelengths,the concentration of vanadium ions at different valency states is detected by spectrophotometry,thus the charge state of electrolyte is quickly and accurately determined. The recovery rate of the test method is 99% ~ 101%. At the same time,the detection error of the vanadium ion is separetely compared by titration and spectrophotometric method,and both of the detection error is less than 0. 1%.

关 键 词：钒电池 电解液 荷电状态 测定方法 

分 类 号：TG115.3[金属学及工艺—物理冶金]