钒电池电解液的电位滴定分析

Potentiometric titration analysis of electrolyte of vanadium battery

介绍了全钒氧化还原液流电池(以下简称钒电池)电解液中钒价态的电位滴定分析方法。该法适用于钒电池电解液中V(Ⅱ)、V(Ⅲ)、V(Ⅳ)、V(Ⅴ)及总钒的测定。结果表明,所测各价态钒及总钒的相对标准偏差(N=6)均不超过2.09%,可满足钒电池电解液中钒价态的分析需要。

Potentiometric titration analysis method for determining oxidation states of van adium in the electrolyte of all vanadium redox flow battery (vanadium battery) w as established. It could be used to analyze V(Ⅱ), V(Ⅲ),V(Ⅳ), V(Ⅴ) and Va ll ions in the anolyte and catholyte of the battery. RSD (N=6) of the results was no more than 2.09%. The method was easy to carry out with good reproducibili ty and satisfactory for quantitative determination of oxidation states of vanadi um.