| PEMFC用气体扩散层中微孔层的干法制备 |
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| 引用本文： | 徐海峰,陈剑,王晓丽,衣宝廉,张华民. PEMFC用气体扩散层中微孔层的干法制备[J]. 电源技术, 2007, 31(1): 57-59 |
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| 作者姓名： | 徐海峰 陈剑 王晓丽 衣宝廉 张华民 |
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| 作者单位： | 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;中国科学院,研究生院,北京,100039;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 |
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| 摘 要： | 比较了用干法和湿法制备的微孔层(MPL)对质子交换膜燃料电池(PEMFC)输出性能的影响.结果表明干法MPL具有较湿法MPL更优的"水管理"功能.对基于干法MPL和湿法MPL的气体扩散层(GDL)分别进行了表征,包括扫描电子显微镜法(SEM)、透气率以及表面接触角.表征结果支持上述实验结论.干法MPL中PTFE质量百分含量的最优值为30%.
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| 关 键 词： | 微孔层 干法制备 湿法制备 气体扩散层 质子交换膜燃料电池 |
| 文章编号： | 1002-087X(2007)01-0057-03 |
| 修稿时间： | 2006-06-26 |
Dry-layer preparation of micro-porous layer for PEMFC |
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| XU Hai-feng,CHEN Jian,WANG Xiao-li,YI Bao-lian,ZHANG Hua-min. Dry-layer preparation of micro-porous layer for PEMFC[J]. Chinese Journal of Power Sources, 2007, 31(1): 57-59 |
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| Authors: | XU Hai-feng CHEN Jian WANG Xiao-li YI Bao-lian ZHANG Hua-min |
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| Abstract: | The performance of the PEMFC single cells with dry-layer MPL and wet-layer MPL were investigated. The experiments indicate that the transport of liquid water/gas in GDL with dry-layer MPL is much better than that with wet-layer MPL, especially when the PEMFC is performed at high current densities. The surface morphology, hydrophobic characteristic of the surface and gas permeability of the GDLs with dry-layer MPL and wet-layer MPL were characterized. The results show good agreement with the experimental observations. The optimal value of PTFE content in dry-layer MPL is 30%. |
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| Keywords: | micro-porous layer (MPL) dry-layer preparation wet-layer preparation gas diffusion layer (GDL) proton exchange membrane fuel cell (PEMFC) |
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