质子交换膜燃料电池用SPTFS/PTFE复合膜研究  

SPTFS/PTFE composite membrane for proton-exchange membrane fuel cell

作　　者：付永柱[1] 刘富强[1] 邢丹敏[1] 于景荣[1] 衣宝廉[1] 张华民[1] 

机构地区：[1]中国科学院大连化学物理研究所燃料电池工程中心,辽宁大连116023

出　　处：《电源技术》2003年第4期345-347,共3页Chinese Journal of Power Sources

摘　　要：将磺化聚α,β,β 三氟苯乙烯(SPTFS)树脂浸入到多孔的聚四氟乙烯(PTFE)膜的孔中,制成SPTFS/PTFE复合膜用于质子交换膜燃料电池(PEMFC)。与均质膜相比通过这种复合方法降低了膜的吸水率。复合膜的电导率在10-2S/cm范围。在80℃,p(H2)/p(O2)压力比为0.2MPa/0.2MPa条件下,用复合膜组装的电池性能与Nafion 115膜组装的电池性能进行了比较。复合膜组装的电池在0.5V时的电流密度(1200mA/cm2)大于Nafion 115膜的(1000mA/cm2);在低电流密度区(小于700mA/cm2),复合膜性能低于Nafion 115膜;在高电流密度区(大于1000mA/cm2),复合膜性能明显高于Nafion 115膜。SPTFS/PTFE composite membrane for protonexchange membrane fuel cell (PEMFC) was prepared by impregnating sulfonated polyα,β,βtrifluorostyene resin into the porous PTFE substate membrane. Water uptake of the composite membrane prepared by the method was reduced in compared with the even membranes and its conductivity is in 10-2 S/cm range. The performance of the fuel cells using the composite membrane and NafionNA452 115 membrane was compared at 80 ℃, p(H2)/p(O2)=0.2 MPa/0.2 MPa. The results show that the current density of the fuel cell using the composite membrane (1 200 mA/cm2) is higher than that of the fuel cell using NafionNA452 115 membrane (1 000 mA/cm2) at 0.5 V. In the low current density range (less than 700 mA/cm2), the performance of the composite membrane is lower than that of NafionNA452 115 membrane. However, in the high current density range(more that 1 000 mA/cm2), the performance of the composite membrane is higher than that of NafionNA452 115 membrane obviously.

关 键 词：质子交换膜燃料电池 SPTFS/PTFE复合膜 电导率 电池性能 

分 类 号：TM911.4[电气工程—电力电子与电力传动]