扩散层形态对质子交换膜燃料电池性能的影响  

Influence of gas diffusion layer morphology on the performance of proton exchange membrane fuel cell

作　　者：王晓丽[1] 张华民[1] 张建鲁[1] 吴金锋[1] 吴川[1] 衣宝廉[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》2005年第9期570-573,共4页Chinese Journal of Power Sources

基　　金：国家自然科学基金资助项目(No.20206030);国家自然科学基金重点资助项目(No.50236010)

摘　　要：研究了扩散层中过渡层所用碳粉的性质和担载量对质子交换膜燃料电池(PEMFC)性能的影响。采用扫描电镜对以AcetyleneBlack、VulcanXC-72、KetjenBlackEC300J和BlackPearls2000四种碳粉制备的扩散层表面形态进行了表征,并分别在1.40mg/cm2和1.00mg/cm2碳粉担量下比较了由这四种碳粉制备的扩散层的电极性能。在以AcetyleneBlack为过渡层碳粉材料时优化了碳粉的担量。实验结果表明随过渡层中所用碳粉比表面积的降低电极性能增加;过渡层中碳粉担量存在一个最佳值;担量为1.00mg/cm2的AcetyleneBlack制备扩散层的电极性能最好,最高比功率可达0.75W/cm2。Influence of the inter-media layer on the performance of proton exchange membrane fuel cell was studied. Morphologies of gas diffusion layers fabricated by Acetylene Black, Vulcan XC-72, KetjenBlack EC 300 J and Black Pearls 2000 carbons were investigated by scanning electron microscopy. The performances of electrodes with different carbon powders were compared at the loadings of 1.4 mg/cm^2 and 1.0 mg/cm^2 respectively. It has been found that the electrode performance increases with the decreasing surface area of carbon powders. And there is an optimum carbon loading in the gas diffusion layer. The electrode with 1.0 mg/cm^2 Acetylene Black shows the best performance of 0.75 W/cm^2.

关 键 词：质子交换膜燃料电池 扩散层 过渡层 碳粉 

分 类 号：TM911.4[电气工程—电力电子与电力传动]