A comparative study of CCM and hot-pressed MEAs for PEM fuel cells
A comparative study of CCM and hot-pressed MEAs for PEM fuel cells
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DOI：
10.1016/j.jpowsour.2007.03.062
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发表时间：
2007-06-30
影响因子：
9.2
通讯作者：
Pan, Mu
中科院分区：
文献类型：
--
作者：
Tang, Haolin;Wang, Shenlong;Pan, Mu
在相同的Pt电催化剂负载条件下，对由常规热压MEA和催化剂涂覆膜（CCM）制成的PEM燃料电池进行了比较研究。结果表明，与传统的热压膜电极制备的电池相比，CCM电池表现出显着更高的电化学性能和功率密度。循环伏安和交流阻抗研究表明，由CCM方法制备的膜电极具有更高的电化学表面积，低电池欧姆电阻和低电荷转移电阻相比，与热压膜电极和相同的Pt负载量。结果表明，CCM可以提高燃料电池的利用效率，改善催化剂层和膜界面。(C)2007 Elsevier B.V.保留所有权利。
A comparative investigation was performed on PEM fuel cells made with conventional hot-pressed MEAs and catalyst-coated membranes (CCM) under identical conditions of Pt electrolcatalyst loadings. The results showed that cells with a CCM exhibit significantly higher electrochemical performance and power density than those prepared with conventional hot-pressed MEAs. Cyclic voltammetric and impedance studies showed that the MEAs prepared by the CCM method have a higher electrochemical surface area, low cell ohmic resistance and low charge transfer resistance as compared to those prepared with hot-pressed MEAs and the same Pt loading. The results demonstrate that a CCM can enhance the utilization efficiency and improve the catalyst layer and membrane interface of PEM fuel cells. (C) 2007 Elsevier B.V. All rights reserved.