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

Zhiyuan Wang; Kai Feng; Zhuguo Li; Fenggui LU; Jian Huang; Yixiong Wu; Paul K. Chu

doi:10.1016/j.ijhydene.2016.02.076

Author(s)

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

Detail(s)

Original language	English
Pages (from-to)	5783-5792
Journal / Publication	International Journal of Hydrogen Energy
Volume	41
Issue number	13
Online published	12 Mar 2016
Publication status	Published - 13 Apr 2016

Link(s)

DOI	DOI https://doi.org/10.1016/j.ijhydene.2016.02.076 Final Published version
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Link to Scopus	https://www.scopus.com/record/display.uri?eid=2-s2.0-84977922750&origin=recordpage
Permanent Link	https://scholars.cityu.edu.hk/en/publications/publication(b3f158fe-a49c-4818-a13c-ca0592c5db3f).html

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 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 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 C_W1(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

SDG 7 - Affordable and Clean Energy

Citation Format(s)

[ RIS ] [ BibTeX ]

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 Reviews › RGC 21 - Publication in refereed journal › peer-review

Wang, Z, Feng, K, Li, Z, LU, F, Huang, J, Wu, Y & Chu, PK 2016, 'Self-passivating carbon film as bipolar plate protective coating in polymer electrolyte membrane fuel cell', International Journal of Hydrogen Energy, vol. 41, no. 13, pp. 5783-5792. https://doi.org/10.1016/j.ijhydene.2016.02.076

Wang, Z., Feng, K., Li, Z., LU, F., Huang, J., Wu, Y., & Chu, P. K. (2016). Self-passivating carbon film as bipolar plate protective coating in polymer electrolyte membrane fuel cell. International Journal of Hydrogen Energy, 41(13), 5783-5792. https://doi.org/10.1016/j.ijhydene.2016.02.076

Wang Z, Feng K, Li Z, LU F, Huang J, Wu Y et al. Self-passivating carbon film as bipolar plate protective coating in polymer electrolyte membrane fuel cell. International Journal of Hydrogen Energy. 2016 Apr 13;41(13):5783-5792. Epub 2016 Mar 12. doi: 10.1016/j.ijhydene.2016.02.076

Wang, Zhiyuan ; Feng, Kai ; Li, Zhuguo et al. / Self-passivating carbon film as bipolar plate protective coating in polymer electrolyte membrane fuel cell. In: International Journal of Hydrogen Energy. 2016 ; Vol. 41, No. 13. pp. 5783-5792.