摘要
研究在40℃温度下,添加剂对全钒氧化还原液流电池电解液稳定性的影响.通过采用硫酸亚铁铵溶液对钒电池电解液进行电位滴定,定量分析钒电池电解液中不同价态钒离子的浓度;利用循环伏安曲线扫描,分析添加剂的引入对电解液电化学性能的影响.结果表明:温度40℃时,添加剂对五价钒溶液稳定性的影响次序为:尿素>硫酸钾>CTAB>草酸铵>草酸钠;添加剂对钒溶液氧化活性的影响为:草酸钠>尿素>硫酸钾>CTAB>草酸铵;对还原活性的影响为:草酸铵>草酸钠>硫酸钾>CTAB>尿素;对氧化还原反应可逆性的影响为:尿素>草酸钠>硫酸钾>CTAB>草酸铵.
The effect of additives on the vanadium battery electrolyte stability was studied at 40 ℃,the concentration of vanadium ions in the electrolyte was analysed quantitatively with titration method through ferrous ammonium sulfate solution,the additives'influences to the electrochemical properties were explained by using the cyclic voltammetry curves.The results show that at 40 ℃,the order of additives to the vanadium battery electrolyte is: urea>potassium sulfate>ETAB>ammonium oxalate>sodium oxalate;the order to the vanadium solution oxidation activity is sodium oxalate>urea>potassium sulfate>CTAB>ammonium oxalate;the order to the vanadium solution reduction activity is ammonium oxalate>sodium oxalate potassium sulfate>CTAB>urea;the order to the redox reaction reversibility is urea>sodium oxalate>potassium sulfate>CTAB>ammonium oxalate.
出处
《材料与冶金学报》
CAS
北大核心
2013年第1期77-80,共4页
Journal of Materials and Metallurgy
基金
国家自然科学基金项目(21273152)
