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Indexed by:期刊论文

Date of Publication:2009-01-01

Journal:INTERNATIONAL JOURNAL OF HYDROGEN ENERGY

Included Journals:SCIE、EI

Volume:34

Issue:1

Page Number:405-409

ISSN No.:0360-3199

Key Words:Metal bipolar plate; Surface treatment; Pulsed bias arc ion plating

Abstract:Carbon-based films on 316L stainless steel were prepared as bipolar plates for proton exchange membrane fuel cells (PEMFCs) by pulsed bias arc ion plating. Three kinds of films were formed including the pure C film, the C-Cr composite film and the C-Cr-N composite film, interfacial conductivity of the bipolar plate with C-Cr film was the highest, which showed great potential of application. Corrosion tests in simulated PEMFC environments revealed that the C-Cr film coated sample always showed better anticorrosive performance than 316L stainless steel either in reducing or oxidizing environments. The C-Cr film coated bipolar plate sample also had high surface energy. The contact angle of the C-Cr film coated sample with water was 92 degrees, which is beneficial for water management in a fuel cell. (C) 2008 International Association for Hydrogen Energy. Published by Elsevier Ltd. All rights reserved.