| 掺杂SiO_2对PEMFC低湿度性能的影响 |
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| 引用本文： | 缪智力,俞红梅,宋微,王亮,赵丹,邵志刚,衣宝廉.掺杂SiO_2对PEMFC低湿度性能的影响[J].电源技术,2010,34(3). |
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| 作者姓名： | 缪智力 俞红梅 宋微 王亮 赵丹 邵志刚 衣宝廉 |
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| 作者单位： | 1. 中国科学院,大连化学物理研究所,辽宁,大连,116023;中国科学院研究生院,北京,100039
2. 中国科学院,大连化学物理研究所,辽宁,大连,116023 |
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| 基金项目： | 国家“863”计划(2007AA05Z123);;国家自然科学基金(20636060;20876154) |
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| 摘 要： | 采用磺化SiO2/Nafion自增湿膜作为质子交换膜,采用掺杂了纳米SiO2或经过磺化处理的SiO2的催化层作为阴极催化层,考察了饱和增湿条件下由自制质子交换膜和阴极催化层组成样品的接触角和质子电导率。在饱和增湿进气条件下考察了其对电池性能,电化学特性的影响,同时降低进气湿度,考察电池性能变化。结果表明,掺杂SiO2提高了催化层的亲水性;掺入纳米SiO2降低了阴极催化层的质子电导率,而掺入磺化SiO2提高了其质子电导率。在饱和增湿进气时,采用磺化SiO2/Nafion自增湿膜大幅地降低了电池的欧姆电阻。采用自增湿膜同时阴极催化层内掺入纳米SiO2降低了电池性能,而掺杂磺化SiO2电池性能有所提高。在干气进气条件下,不论是单独采用磺化SiO2/Nafion复合膜还是在阴极催化层加入纳米SiO2或者磺化处理过的SiO2,电池性能均有所提高。
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| 关 键 词： | 质子交换膜燃料电池（PEMFC） 自增湿 催化层 SiO2 低湿度 |
Effect of doping SiO2 on PEMFC performance at low humidity |
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| MIAO Zhi-li,YU Hong-mei,SONG Wei,WANG Liang,ZHAO Dan,SHAO Zhi-gang,YI Bao-lian.Effect of doping SiO2 on PEMFC performance at low humidity[J].Chinese Journal of Power Sources,2010,34(3). |
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| Authors: | MIAO Zhi-li YU Hong-mei SONG Wei WANG Liang ZHAO Dan SHAO Zhi-gang YI Bao-lian |
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| Affiliation: | 1.Dalian Institute of Chemical Physics;Chinese Academy of Science;Dalian Liaoning 116023;China;2.Graduate School of the Chinese Academy of Sciences;Beijing 100039;China |
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| Abstract: | The contact angle and proton conductivity of the sample with sulfonated SiO2/Nafion self-humidifying membrane as proton exchange membrane and doping nanosized SiO2 or sulfonated SiO2 as cathode catalyst layer was researched.The effects of the sample on performance and electrochemical properties of the cells were analyzed,and the performance change of cells was studied when lowering the feed humidity.The results show that doping SiO2 can improve the hydrophilicity of the cathode catalyst layers,and different... |
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| Keywords: | SiO2 |
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