Effect of water electrolysis catalysts on carbon corrosion in polymer electrolyte membrane fuel cells

Sang Eun Jang; Hansung Kim

doi:10.1021/ja104672n

Effect of water electrolysis catalysts on carbon corrosion in polymer electrolyte membrane fuel cells

Sang Eun Jang, Hansung Kim

Department of Chemical and Biomolecular Engineering

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

97 Citations (Scopus)

Abstract

A new approach to preventing electrochemical carbon corrosion in the cathode of polymer electrolyte membrane fuel cells (PEMFCs) was developed. The addition of 2 wt % IrO₂ (0.016 mg cm^-2) to the catalyst layer of the cathode was demonstrated to reduce the electrochemical corrosion of carbon by 76% at 1.6 V_NHE and 70 °C compared with a commercial Pt/C catalyst of the same Pt loading of 0.4 mg cm^-2 and under the same test conditions. The IrO₂ was shown to behave as a catalyst for water electrolysis, thereby removing water from the catalyst layer, which promoted electrochemical carbon corrosion.

Original language	English
Pages (from-to)	14700-14701
Number of pages	2
Journal	Journal of the American Chemical Society
Volume	132
Issue number	42
DOIs	https://doi.org/10.1021/ja104672n
Publication status	Published - 2010 Oct 27

All Science Journal Classification (ASJC) codes

Catalysis
Chemistry(all)
Biochemistry
Colloid and Surface Chemistry

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AB - A new approach to preventing electrochemical carbon corrosion in the cathode of polymer electrolyte membrane fuel cells (PEMFCs) was developed. The addition of 2 wt % IrO2 (0.016 mg cm-2) to the catalyst layer of the cathode was demonstrated to reduce the electrochemical corrosion of carbon by 76% at 1.6 VNHE and 70 °C compared with a commercial Pt/C catalyst of the same Pt loading of 0.4 mg cm-2 and under the same test conditions. The IrO2 was shown to behave as a catalyst for water electrolysis, thereby removing water from the catalyst layer, which promoted electrochemical carbon corrosion.

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Effect of water electrolysis catalysts on carbon corrosion in polymer electrolyte membrane fuel cells

Abstract

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