NaCl作为添加剂对钒电池正极电解液性能的影响  

Effect of NaCl as additive for positive electrolyte on the properties of vanadium redox flow battery

作　　者：陈孝娥 崔旭梅[2] 曾志勇[3] 丁虎标 张贵刚[2] CHEN Xiao’e;CUI Xu-mei;ZENG Zhi-yong;DING Hu-biao;ZHANG Gui-gang(School of Resources and Environmental Engineering,Panzhihua University,Panzhihua Sichuan 617000,China;School of Material Science and Engineering,Panzhihua University,Panzhihua Sichuan 617000,China;Sichuan V＆Ti Industrial Technology Institute,Panzhihua University,Panzhihua Sichuan 617000,China)

机构地区：[1]攀枝花学院资源与环境工程学院,四川攀枝花617000 [2]攀枝花学院材料工程学院,四川攀枝花617000 [3]攀枝花学院四川钒钛产业技术研究院,四川攀枝花617000

出　　处：《电源技术》2018年第6期840-842,共3页Chinese Journal of Power Sources

基　　金：教育部新世纪优秀人才支持计划(NECT-10-0946);四川省科技创新研究团队建设项目(2011JTD0039;2015TD00008);攀枝花市创新团队项目(2011TX-15)

摘　　要：以NaCl作为钒电池正极电解液的添加剂,通过循环伏安、交流阻抗、稳定性等考察,研究了NaCl对电解液电导率、热稳定性及电化学性能的影响。研究结果表明:添加NaCl不会影响钒离子的氧化还原性质,但能提高电解液的电导率,有效减小电荷传递电阻,提高双电层电容。当NaCl添加量为4%时,正极电解液的热稳定性和电化学活性显著提高,充放电性能得到改善。NaCl was used as the additive of positive electrolyte for vanadium redox flow battery. Its conductivity,thermal stability and electrochemical activity were investigated by cyclic voltammetry, electrochemical impedance spectroscopy and examination of stabilization. The results indicated that the NaCl did not affect the oxidation-reduction property, but increase conductivity, reduce charge transfer resistance and increase double-layer capacitance. The electrochemical activity, thermal stability and charge-discharge performance of the positive electrolyte were improved by adding 4% NaCl.

关 键 词：全钒氧化还原液流电池 电解液 添加剂 NACL 

分 类 号：TM912[电气工程—电力电子与电力传动]