首页 | 本学科首页   官方微博 | 高级检索  
     

全钒氧化还原液流储能电堆
引用本文:吕正中,胡嵩麟,武增华,陈立泉,邱新平.全钒氧化还原液流储能电堆[J].电源技术,2007,31(4):318-321.
作者姓名:吕正中  胡嵩麟  武增华  陈立泉  邱新平
作者单位:1. 清华大学,深圳研究生院,广东,深圳,518055;清华大学,化学系,北京,100084
2. 清华大学,深圳研究生院,广东,深圳,518055
3. 清华大学,深圳研究生院,广东,深圳,518055;中国科学院,物理研究所,北京,100080
摘    要:采用高密度石墨板为集流板,质子交换膜为隔膜,多孔碳材料为电极,组装成全钒氧化还原液流电池,研究了不同质子交换膜、多孔碳材料和电解液的流量对电池性能的影响,用15个单电池组装成了全钒氧化还原液流储能电堆,电堆的电极和隔膜的有效面积均为546 cm2,并对电堆的充放电性能进行测试和表征.结果表明,以PVDF-g-PSSA膜为隔膜,聚丙烯腈石墨毡为电极的全钒氧化还原液流储能电堆充放电可逆性能好,能量效率随着充放电电流密度增加而减小,电流密度在40 mA/cm2左右时,能量效率高达82.3%,电堆的库仑效率随电流密度增加而增加,电流密度超过1 00 mA/cm2时,库仑效率可达94.5%.

关 键 词:钒氧化还原液流储能电堆  集流板  能量效率  库仑效率  多孔碳电极
文章编号:1002-087X(2007)04-0318-04
修稿时间:2006年9月19日

Vanadium redox flow energy storage stack
LV Zheng-zhong,HU Song-lin,WU Zeng-hua,CHEN Li-quan,QIU Xin-ping.Vanadium redox flow energy storage stack[J].Chinese Journal of Power Sources,2007,31(4):318-321.
Authors:LV Zheng-zhong  HU Song-lin  WU Zeng-hua  CHEN Li-quan  QIU Xin-ping
Abstract:The vanadium redox flow cells were prepared by using high-density graphite plates as current collector,proton exchange membranes as separator,and porous carbon material as electrode,and the effect of proton exchange membrane,porous carbon material and the flux of electrolytes on electrochemical performance of the stack was studied.The electrochemical performance of vanadium redox flow energy storage stack composed of 15 cells with active area of 546 cm2 was evaluated.The results show that vanadium redox flow energy storage stack with PVDF-g-PSSA membrane as separator,polyarylonitrile graphite felt as electrode possesses good reversible charge-discharge property.The energy efficiency of the stack descends with the increase of charge-discharge current density,and its maxium value is 82.3% of that when current density is about 40 mA/cm2.Whereas the coulombic efficiency increases with the increase of charge-discharge current density,which can reach 94.5% or more,when current density is above 100 mA/cm2.
Keywords:vanadium redox flow energy storage stack  current collector  energy efficiency  coulombic efficiency  porous carbon electrode
本文献已被 CNKI 万方数据 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号