Self-passivating carbon film as bipolar plate protective coating in polymer electrolyte membrane fuel cell

被引：34

作者：

Wang, Zhiyuan ^{[1
,3
]}

Feng, Kai ^{[1
,2
,3
]}

Li, Zhuguo ^{[1
,3
]}

Lu, Fenggui ^{[1
,3
]}

Huang, Jian ^{[1
,3
]}

Wu, Yixiong ^{[1
,3
]}

Chu, Paul K. ^{[2
]}

机构：

[1] Shanghai Jiao Tong Univ, Shanghai Key Lab Mat Laser Proc & Modificat, Sch Mat Sci & Engn, Shanghai 200240, Peoples R China

[2] City Univ Hong Kong, Dept Phys & Mat Sci, Tat Chee Ave, Kowloon, Hong Kong, Peoples R China

[3] Collaborat Innovat Ctr Adv Ship & Deep Sea Explor, Shanghai 200240, Peoples R China

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2016年 / 41卷 / 13期

基金：

中国国家自然科学基金;

关键词：

Polymer electrolyte membrane fuel cell; Bipolar plate; Carbon film; Tungsten; Interfacial contact resistance; Corrosion resistance; 316L STAINLESS-STEEL; CORROSION-RESISTANCE; COATED; 304-STAINLESS-STEEL; FIELD; PERFORMANCE; GRAPHENE; BEHAVIOR;

D O I：

10.1016/j.ijhydene.2016.02.076

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The effects of W doping on the microstructure, ICR, and corrosion resistance of carbon films are systematically investigated. The W-doped carbon film has a compact structure and the surface topography changes slightly with W concentration. W exists in mainly the metallic state when the concentration is small, but amorphous WC is formed in the C-w2(A) and C-w3(A) samples. The ICR at a typical compaction force of 150 N cm(-2) increases marginally in the range of 6.25-7.21 m Omega-cm(2) as the W concentration is varied. The carbon films with smaller W concentrations have better corrosion resistance and even the self-passivating ability. During pulse polarization, the bare SS316L shows a very large current density of 150 mu A cm(-2) due to breakdown of the passive film, but C-w1(A) shows a stable and low current density of about 0.6 mu A cm(-2) due to the good self-passivating ability. The self-passivating ability originates from oxidation of metallic state Win the carbon film and so a proper W concentration can yield the desirable self-passivating effect. Copyright (C) 2016, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.

引用

页码：5783 / 5792

页数：10

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