正负极电解液对钒电池能量衰减的影响研究  

Study on effect of cathode and anode electrolyte on energy attenuation of vanadium battery

作　　者：李君涛 史小虎 余龙海 彭穗[2] LI Jun-tao;SHI Xiao-hu;YU Long-hai;PENG Sui(Big Pawer Electrical Technology Xiangyang Co., Ltd., Xiangyang Hubei 441057, China;Pangang Group Research Institute Co., Ltd., Chengdu Sichuan 610303, China)

机构地区：[1]大力电工襄阳股份有限公司,湖北襄阳441057 [2]攀钢集团研究院有限公司,四川成都610303

出　　处：《电源技术》2017年第12期1757-1759,共3页Chinese Journal of Power Sources

基　　金：攀西战略资源创新开发试验区第一批重大科技攻关项目(钒电池产品开发及应用)

摘　　要：为提升钒电池的能量效率、降低电池在充放电循环过程中的容量衰减,对正负极电解液钒浓度和硫酸浓度不同的三组电池进行充放电实验。分别对钒浓度为1.7 mol/L、硫酸根浓度为4.5 mol/L,钒浓度为1.55 mol/L、硫酸根浓度为4.1 mol/L,钒浓度为1.55 mol/L、硫酸根浓度为4.7 mol/L的三种电解液进行循环伏安实验。实验表明负极电解液在较高的硫酸浓度和较低的钒浓度下,钒离子迁移量较小,电池的容量衰减较小,能量效率也较高。In order to improve the energy efficiency of vanadium battery and reduce the decay rate of battery during charge and discharge cycle,the charge and discharge experiments were performed on three different batteries,which had different components of cathode and anode vanadium electrolyte.Three groups of electrolytes of different composition with the concentration of vanadium was1.7mol/L,the concentration of sulfate was4.5mol/L,the concentration of vanadium was1.55mol/L,the concentration of sulfate was4.1mol/L,and the concentration of vanadium was1.55mol/L,the concentration of sulfate was4.7mol/L were determined by cyclic voltammetry.The results show that when the anode electrolyte has higher concentration of sulfuric acid and lower vanadium concentration,the vanadium ion migration quantity is less,the capacity fading is slower and the power-energy performance is better.

关 键 词：钒电池 电解液 钒浓度 硫酸浓度 

分 类 号：TM91[电气工程—电力电子与电力传动]