亲水短侧链离子交换树脂燃料电池性能研究  

Hydrophilic short side chain ionomer application and performance in fuel cell

作　　者：周亚文 俞红梅[1] 谢峰[1] 邵志刚[1] ZHOU Yawen;YU Hongmei;XIE Feng;SHAO Zhigang(Dalian Institute of Chemical Physics,Chinese Academy of Sciences,Dalian Liaoning 116023,China;University of Chinese Academy of Sciences,Beijing 100039,China)

机构地区：[1]中国科学院大连化学物理研究所,辽宁大连116023 [2]中国科学院大学,北京100039

出　　处：《电源技术》2021年第11期1389-1392,1499,共5页Chinese Journal of Power Sources

基　　金：国家重点研发计划(2019YFB1504502)。

摘　　要：将具有亲水短侧链的离子交换树脂应用于燃料电池膜电极,测试了不同湿度下的电池性能。结果证明,亲水短侧链离子交换树脂膜电极最佳空气湿度为20%,此时最高功率密度为721 mW/cm^(2)@1277 mA/cm^(2),比常规膜电极高出20%,常规膜电极的最佳湿度为60%。EIS和CV测试表明,更小的电荷转移电阻R_(ct)和欧姆电阻R_(s),是短侧链树脂膜电极低湿度下性能优异的原因。综上,亲水短侧链树脂膜电极更适宜在低增湿下应用。Hydrophilic short side chain(SSC)ionomer was applied to membrane electrodes under different humidity.It indicated that SSC ionomer electrode showed a peak power density of 721 mW/cm^(2)@1277 mA/cm^(2) under the optimum air humidity of 20%,which is 20%higher than the long side chain(LSC)with the optimum air humidity of 60%.Afterwards,CV and EIS was employed to investigate the causes and corresponding results evidenced that the new membrane electrode has a smaller charge transfer resistance R_(ct) and ohmic resistance R_(s).SSC ionomer is prospective in low relative humidity applications.

关 键 词：质子交换膜燃料电池 短侧链离子聚合物 低增湿 风冷燃料电池 

分 类 号：TM911[电气工程—电力电子与电力传动]