全钒液流电池的质子传导膜研究  

Study on proton conductive membranes for all-vanadium redox flow battery

作　　者：陈晓[1] 宋士强[1] 范永生[1] 刘平[1] 王保国[1] 

机构地区：[1]清华大学化学工程系,北京100084

出　　处：《膜科学与技术》2012年第6期34-38,共5页Membrane Science and Technology

基　　金：国家自然科学基金资助项目(20876086;21076112);国家"863"课题(2007AA05Z245);国家重点基础研究发展计划(973计划)项目(2010CB227202)

摘　　要：研究质子传导膜对全钒液流电池性能的影响,包括膜面电阻、阻钒性以及质子传导膜厚度,为研究开发适用于全钒液流电池的质子传导膜提供依据.通过测定钒电池循环充电/放电过程的效率、暂态极化曲线、静态交叉放电曲线,建立选择与优化膜材料的评价方法;在考察膜电导率、膜厚、阻钒性和机械强度的综合性能指标后,认为膜面电阻在0.3～0.5Ω.cm2范围,具备优良阻钒性能条件下,膜厚约150μm比较合适.使用符合该性能的聚偏氟乙烯质子传导膜时,钒电池能量效率超过70%,有望满足发展大容量蓄电储能装备的需要.Proton conductive membrane used in the all-vanadium redox flow battery was discussed in this paper, including the effect of membrane＇s area resistance, vanadium permeability, and thickness on the battery. It contributes a basis for proton conductive membraner s research. By using the methods of transient polarization curves, cross-discharging curves, and battery efficiency test, the results showed that ： considering the membrane conductivity, thickness, vanadium permeability, and mechanical strength, the membrane＇s area resistance should be 0.3～0.5Ω·cm2 , and with good vanadium permeability and thickness should be about 150μm. The energy efficiency of the battery used PVDF-based membranes could up to 70%, which met the needs of developing the large-scale energy storage devices.

关 键 词：全钒液流电池 质子传导膜 膜面电阻 阻钒性 膜厚 电池效率 

分 类 号：TM912[电气工程—电力电子与电力传动] TB383.2[一般工业技术—材料科学与工程]