Surface modification and performance of inexpensive Fe-based bipolar plates for proton exchange membrane fuel cells

Ching Yuan Bai; Tse M. Wen; Mao Suan Huang; Kung H. Hou; Ming D. Ger; Shuo J. Lee

doi:10.1016/j.jpowsour.2010.03.048

Surface modification and performance of inexpensive Fe-based bipolar plates for proton exchange membrane fuel cells

Ching Yuan Bai, Tse M. Wen, Mao Suan Huang, Kung H. Hou, Ming D. Ger, Shuo J. Lee

Research output: Contribution to journal › Article › peer-review

18 Citations (Scopus)

Abstract

A reforming pack chromization with rolling pretreatment process is utilized to develop inexpensive and high-performance Fe-based metal bipolar plates (SS 420, SS 430, and SS 316 stainless steels) for PEMFC systems. Rolling process is previously performed to reduce the chromizing temperature and generate a coating possessing excellent conductivity and corrosion resistance on the steels during chromization. The power efficiencies of rolled-chromized and simple chromized bipolar plates are compared with graphite bipolar plates employed in PEMFCs. The results show that the rolled-chromized bipolar plates have a corrosion current (I_corr) of 7.87 × 10^-8 A cm^-2 and an interfacial contact resistance of 9.7 mΩ cm². Moreover, the power density of the single cell assembled with rolled-chromized bipolar plates is 0.46 W cm^-2, which is very close to that of graphite (0.50 W cm^-2), in the tested conditions of this study.

Original language	English
Pages (from-to)	5686-5691
Number of pages	6
Journal	Journal of Power Sources
Volume	195
Issue number	17
DOIs	https://doi.org/10.1016/j.jpowsour.2010.03.048
Publication status	Published - Sep 1 2010

Keywords

Bipolar plates
Fe-based alloys
Low-temperature pack chromization
Rolling

ASJC Scopus subject areas

Physical and Theoretical Chemistry
Energy Engineering and Power Technology
Renewable Energy, Sustainability and the Environment
Electrical and Electronic Engineering

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title = "Surface modification and performance of inexpensive Fe-based bipolar plates for proton exchange membrane fuel cells",

abstract = "A reforming pack chromization with rolling pretreatment process is utilized to develop inexpensive and high-performance Fe-based metal bipolar plates (SS 420, SS 430, and SS 316 stainless steels) for PEMFC systems. Rolling process is previously performed to reduce the chromizing temperature and generate a coating possessing excellent conductivity and corrosion resistance on the steels during chromization. The power efficiencies of rolled-chromized and simple chromized bipolar plates are compared with graphite bipolar plates employed in PEMFCs. The results show that the rolled-chromized bipolar plates have a corrosion current (Icorr) of 7.87 × 10-8 A cm-2 and an interfacial contact resistance of 9.7 mΩ cm2. Moreover, the power density of the single cell assembled with rolled-chromized bipolar plates is 0.46 W cm-2, which is very close to that of graphite (0.50 W cm-2), in the tested conditions of this study.",

keywords = "Bipolar plates, Fe-based alloys, Low-temperature pack chromization, Rolling",

author = "Bai, {Ching Yuan} and Wen, {Tse M.} and Huang, {Mao Suan} and Hou, {Kung H.} and Ger, {Ming D.} and Lee, {Shuo J.}",

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AU - Bai, Ching Yuan

AU - Wen, Tse M.

AU - Huang, Mao Suan

AU - Hou, Kung H.

AU - Ger, Ming D.

AU - Lee, Shuo J.

PY - 2010/9/1

Y1 - 2010/9/1

N2 - A reforming pack chromization with rolling pretreatment process is utilized to develop inexpensive and high-performance Fe-based metal bipolar plates (SS 420, SS 430, and SS 316 stainless steels) for PEMFC systems. Rolling process is previously performed to reduce the chromizing temperature and generate a coating possessing excellent conductivity and corrosion resistance on the steels during chromization. The power efficiencies of rolled-chromized and simple chromized bipolar plates are compared with graphite bipolar plates employed in PEMFCs. The results show that the rolled-chromized bipolar plates have a corrosion current (Icorr) of 7.87 × 10-8 A cm-2 and an interfacial contact resistance of 9.7 mΩ cm2. Moreover, the power density of the single cell assembled with rolled-chromized bipolar plates is 0.46 W cm-2, which is very close to that of graphite (0.50 W cm-2), in the tested conditions of this study.

AB - A reforming pack chromization with rolling pretreatment process is utilized to develop inexpensive and high-performance Fe-based metal bipolar plates (SS 420, SS 430, and SS 316 stainless steels) for PEMFC systems. Rolling process is previously performed to reduce the chromizing temperature and generate a coating possessing excellent conductivity and corrosion resistance on the steels during chromization. The power efficiencies of rolled-chromized and simple chromized bipolar plates are compared with graphite bipolar plates employed in PEMFCs. The results show that the rolled-chromized bipolar plates have a corrosion current (Icorr) of 7.87 × 10-8 A cm-2 and an interfacial contact resistance of 9.7 mΩ cm2. Moreover, the power density of the single cell assembled with rolled-chromized bipolar plates is 0.46 W cm-2, which is very close to that of graphite (0.50 W cm-2), in the tested conditions of this study.

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KW - Fe-based alloys

KW - Low-temperature pack chromization

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