碳布增强型导电塑料双极板的制备与性能  

Preparation and performance of conductive composite plastic bipolar plate strengthened by carbon fabric

作　　者：侯绍宇[1,2] 刘西文[1] 陈晖[1,2] 刘建国[1] 严川伟[1] 

机构地区：[1]中国科学院金属研究所,辽宁沈阳110044 [2]沈阳科金新材料有限公司,辽宁沈阳110044

出　　处：《电源技术》2011年第8期926-928,共3页Chinese Journal of Power Sources

基　　金：国家重点基础研究发展计划(973)项目(2010CB-227203);国家自然科学基金项目(21003141)

摘　　要：采用聚乙烯为基体,炭黑和石墨为导电填料,通过碳布做增强骨架,制备了钒电池三明治型导电塑料基复合双极板。结果表明双极板的最佳配方为:m(炭黑)∶m(石墨)=45∶15,总填料含量为60%。碳布的引入有效地提高了双极板的力学性能,尤其是弯曲疲劳寿命大幅提高。该双极板在100 m A/cm 2的电流密度下,电流效率为97%,电压效率达到82%,能量效率达到80%。In this paper,using polyethylene（PE）,carbon black and graphite as conductive fillers,and carbon fabric as strengthened material,a sandwich-like conductive plastic bipolar plate was prepared.The mechanical and the battery performance were studied.The results show that the best prescription of the composite conductive plastic is carbon black∶graphite=45∶15,and the total filling materials is 60%.The carbon fabric can enhance the mechanical performance of bipolar plate effectively,especially the fatigue life.Under 100 mA/cm2 current density,using this carbon fabric strengthened material as bipolar plate,the voltage efficiency for the tested vanadium flow battery is 82% and the current efficiency is 97% and the energy efficiency is 80%.

关 键 词：钒电池 双极板 导电塑料 碳布 疲劳寿命 

分 类 号：TM912[电气工程—电力电子与电力传动]