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

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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Author(s)

  • Zhiyuan Wang
  • Kai Feng
  • Zhuguo Li
  • Fenggui LU
  • Jian Huang
  • Yixiong Wu

Detail(s)

Original languageEnglish
Pages (from-to)5783-5792
Journal / PublicationInternational Journal of Hydrogen Energy
Volume41
Issue number13
Online published12 Mar 2016
Publication statusPublished - 13 Apr 2016

Abstract

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 CW2(A) and CW3(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 Ω-cm2 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 µA cm-2 due to breakdown of the passive film, but CW1(A) shows a stable and low current density of about 0.6 µA 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.

Research Area(s)

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

Citation Format(s)

Self-passivating carbon film as bipolar plate protective coating in polymer electrolyte membrane fuel cell. / Wang, Zhiyuan; Feng, Kai; Li, Zhuguo et al.
In: International Journal of Hydrogen Energy, Vol. 41, No. 13, 13.04.2016, p. 5783-5792.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review