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

Rachid Chebbi, Abdellah Beicha, Wan Ramli Wan Daud, Radia Zaamouche

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

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 C1s peak showed that the carbon was of the form of C, C-O, C{double bond, long}O, CF, CF2 and CF3 with CF2 is more dominated on the surface compared to CF and CF3. The oxygen O1s photoelectron peak showed that the oxygen was of the form of C{double bond, long}O and C-O. The platinum was of the form of Pt0 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/cm2 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.

Original languageEnglish
Pages (from-to)6367-6371
Number of pages5
JournalApplied Surface Science
Volume255
Issue number12
DOIs
Publication statusPublished - 1 Apr 2009

Fingerprint

Surface analysis
Polytetrafluoroethylene
Proton exchange membrane fuel cells (PEMFC)
Polytetrafluoroethylenes
Electrodes
Catalysts
Platinum
Carbon
Oxygen
Scanning electron microscopy
Photoelectrons
X ray photoelectron spectroscopy
Membranes

Keywords

  • Catalyst layer
  • Diffusion layer
  • Fuel cell
  • SEM
  • XPS

ASJC Scopus subject areas

  • Surfaces, Coatings and Films

Cite this

Surface analysis for catalyst layer (PT/PTFE/C) and diffusion layer (PTFE/C) for proton exchange membrane fuel cells systems (PEMFCs). / Chebbi, Rachid; Beicha, Abdellah; Wan Daud, Wan Ramli; Zaamouche, Radia.

In: Applied Surface Science, Vol. 255, No. 12, 01.04.2009, p. 6367-6371.

Research output: Contribution to journalArticle

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