Electrochemical response of zirconia-coated 316L stainless-steel in a simulated proton exchange membrane fuel cell environment

W. G. Lee; K. H. Cho; S. B. Lee; S. B. Park; H. Jang

doi:10.1016/j.jallcom.2008.06.093

Electrochemical response of zirconia-coated 316L stainless-steel in a simulated proton exchange membrane fuel cell environment

W. G. Lee, K. H. Cho, S. B. Lee, S. B. Park, H. Jang

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

28 Citations (Scopus)

Abstract

The corrosion resistance of zirconia-coated austenitic stainless-steel 316L was investigated in a simulated proton exchange membrane fuel cell (PEMFC) environment. The zirconia coating was performed using a sol-gel dip coating method and electrochemical tests were carried out at 80 °C in 1 M H₂SO₄ solution to accelerate corrosion. The results showed that the precursor containing zirconium alkoxide and zirconium acetate hydroxide changed into tetragonal zirconia, producing a surface film without cracks. Potentiodynamic tests showed that the corrosion resistance of the zirconia-coated 316L stainless-steel was improved by one order of magnitude compared to the bare specimen in terms of the current density. Potentiostatic experiments also showed enhanced corrosion prevention due to zirconia coating under the simulated PEMFC conditions. However, the high interfacial contact resistance (ICR) of the zirconia film suggested that the modification of the zirconia film should be performed to impart higher electrical conductivity for the successful application of zirconia-coated metallic bipolar plates.

Original language	English
Pages (from-to)	268-272
Number of pages	5
Journal	Journal of Alloys and Compounds
Volume	474
Issue number	1-2
DOIs	https://doi.org/10.1016/j.jallcom.2008.06.093
Publication status	Published - 2009 Apr 17

Bibliographical note

Funding Information:
This work was supported by grants from the Seoul R&BD Program of the Korea University.

Keywords

Corrosion resistance
Interfacial contact resistance
Proton exchange membrane fuel cell
Sol-gel
Zirconia

ASJC Scopus subject areas

Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

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10.1016/j.jallcom.2008.06.093

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title = "Electrochemical response of zirconia-coated 316L stainless-steel in a simulated proton exchange membrane fuel cell environment",

abstract = "The corrosion resistance of zirconia-coated austenitic stainless-steel 316L was investigated in a simulated proton exchange membrane fuel cell (PEMFC) environment. The zirconia coating was performed using a sol-gel dip coating method and electrochemical tests were carried out at 80 °C in 1 M H2SO4 solution to accelerate corrosion. The results showed that the precursor containing zirconium alkoxide and zirconium acetate hydroxide changed into tetragonal zirconia, producing a surface film without cracks. Potentiodynamic tests showed that the corrosion resistance of the zirconia-coated 316L stainless-steel was improved by one order of magnitude compared to the bare specimen in terms of the current density. Potentiostatic experiments also showed enhanced corrosion prevention due to zirconia coating under the simulated PEMFC conditions. However, the high interfacial contact resistance (ICR) of the zirconia film suggested that the modification of the zirconia film should be performed to impart higher electrical conductivity for the successful application of zirconia-coated metallic bipolar plates.",

keywords = "Corrosion resistance, Interfacial contact resistance, Proton exchange membrane fuel cell, Sol-gel, Zirconia",

author = "Lee, {W. G.} and Cho, {K. H.} and Lee, {S. B.} and Park, {S. B.} and H. Jang",

note = "Funding Information: This work was supported by grants from the Seoul R&BD Program of the Korea University.",

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doi = "10.1016/j.jallcom.2008.06.093",

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AU - Lee, W. G.

AU - Cho, K. H.

AU - Lee, S. B.

AU - Park, S. B.

AU - Jang, H.

N1 - Funding Information: This work was supported by grants from the Seoul R&BD Program of the Korea University.

PY - 2009/4/17

Y1 - 2009/4/17

N2 - The corrosion resistance of zirconia-coated austenitic stainless-steel 316L was investigated in a simulated proton exchange membrane fuel cell (PEMFC) environment. The zirconia coating was performed using a sol-gel dip coating method and electrochemical tests were carried out at 80 °C in 1 M H2SO4 solution to accelerate corrosion. The results showed that the precursor containing zirconium alkoxide and zirconium acetate hydroxide changed into tetragonal zirconia, producing a surface film without cracks. Potentiodynamic tests showed that the corrosion resistance of the zirconia-coated 316L stainless-steel was improved by one order of magnitude compared to the bare specimen in terms of the current density. Potentiostatic experiments also showed enhanced corrosion prevention due to zirconia coating under the simulated PEMFC conditions. However, the high interfacial contact resistance (ICR) of the zirconia film suggested that the modification of the zirconia film should be performed to impart higher electrical conductivity for the successful application of zirconia-coated metallic bipolar plates.

AB - The corrosion resistance of zirconia-coated austenitic stainless-steel 316L was investigated in a simulated proton exchange membrane fuel cell (PEMFC) environment. The zirconia coating was performed using a sol-gel dip coating method and electrochemical tests were carried out at 80 °C in 1 M H2SO4 solution to accelerate corrosion. The results showed that the precursor containing zirconium alkoxide and zirconium acetate hydroxide changed into tetragonal zirconia, producing a surface film without cracks. Potentiodynamic tests showed that the corrosion resistance of the zirconia-coated 316L stainless-steel was improved by one order of magnitude compared to the bare specimen in terms of the current density. Potentiostatic experiments also showed enhanced corrosion prevention due to zirconia coating under the simulated PEMFC conditions. However, the high interfacial contact resistance (ICR) of the zirconia film suggested that the modification of the zirconia film should be performed to impart higher electrical conductivity for the successful application of zirconia-coated metallic bipolar plates.

KW - Corrosion resistance

KW - Interfacial contact resistance

KW - Proton exchange membrane fuel cell

KW - Sol-gel

KW - Zirconia

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Electrochemical response of zirconia-coated 316L stainless-steel in a simulated proton exchange membrane fuel cell environment

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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