Surface analysis for catalyst layer (PT/PTFE/C) and diffusion layer (PTFE/C) for proton exchange membrane fuel cells systems (PEMFCs)

被引：25

作者：

Chebbi, Rachid ^{[1
]}

Beicha, Abdellah ^{[2
]}

Daud, W. R. W. ^{[3
]}

Zaamouche, Radia ^{[2
]}

机构：

[1] Biskra Univ, Fac Sci & Engn, Dept Chem & Proc Engn, Biskra 07000, Algeria

[2] Univ Jijel, Fac Engn, Dept Ind Chem, Jijel 18000, Algeria

[3] Univ Kebangsaan Malaysia, Fac Engn, Dept Chem & Proc Engn, Kuala Lumpur 50603, Malaysia

来源：

APPLIED SURFACE SCIENCE | 2009年 / 255卷 / 12期

关键词：

Fuel cell; Diffusion layer; Catalyst layer; XPS; SEM;

D O I：

10.1016/j.apsusc.2009.02.017

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070305 [高分子化学与物理];

摘要：

X-ray photoelectron spectroscopy (XPS) and scanning electron microscopy (SEM) studies have been used to analyze the surface of diffusion layer (PTFE/C) and catalyst layer (Pt/C/PTFE) of electrode. Detail analysis of carbon C(1s) peak showed that the carbon was of the form of C, C-O, C=O, CF, CF(2) and CF(3) with CF(2) is more dominated on the surface compared to CF and CF(3). The oxygen O(1s) photoelectron peak showed that the oxygen was of the form of C=O and C-O. The platinum was of the form of Pt(0) with some Pt oxidized to PtO. The scanning electron microscopy was used to observe the dispersion of Teflon in the diffusion layer, the distribution of platinum in the catalyst layer loaded with 0.38 mg Pt/cm(2) and also the cross section of the membrane electrode assembly. The prepared electrode delivers a superior performance compared with the commercial electrode (E-TEK). The difference in performance between the two electrodes is due to the good localization of the platinum particles. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：6367 / 6371

页数：5

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