Effect of the ionomers in the electrode on the performance of PEMFC under non-humidifying conditions
Effect of the ionomers in the electrode on the performance of PEMFC under non-humidifying conditions
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DOI：
10.1016/j.electacta.2004.01.132
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发表时间：
2004-11-30
影响因子：
6.6
通讯作者：
Oh, IH
中科院分区：
文献类型：
--
作者：
Ahn, SY;Lee, YC;Oh, IH
为了提高质子交换膜燃料电池（PEMFC）在非稳态条件下的性能，通过优化电极组成，开发了新型PEMFC电极。在电极中使用具有较低当量的离聚物（EW 1000）以增强质子传导性，从而降低干燥条件下的欧姆电阻。虽然聚合物电解质的质子传导率与其当量成反比，但EW的效果在低湿度条件下的MEA的性能中更明显。在不同湿度条件下，通过极化曲线和交流阻抗分析，比较了新型膜电极与传统EW 1100离聚物膜电极的性能。(C)2004 Elsevier Ltd.保留所有权利。
New electrodes for polymer electrolyte membrane fuel cells (PEMFCs) have been developed to improve the performance of PEMFCs under non-humidifying condition by optimizing electrode composition. The ionomer with a lower equivalent weight (EW 1000) was used in the electrode to enhance the proton conductivity and thus to reduce the ohmic resistance under dry conditions. Though the proton conductivity of the polymer electrolyte was inversely proportional to its equivalent weight, the effect of the EW was more pronounced in the performance of the MEA at low humidity conditions. Performances of the new MEAs were compared with those of conventional MEAs with EW 1100 ionomer by using polarization curves and impedance analysis under various humidity conditions. (C) 2004 Elsevier Ltd. All rights reserved.