PGM‐Free Cathode Catalysts for PEM Fuel Cells: A Mini‐Review on Stability Challenges

Shao, Yuyan; Dodelet, Jean‐Pol; Wu, Gang; Zelenay, Piotr

doi:10.1002/adma.201807615

Title: PGM‐Free Cathode Catalysts for PEM Fuel Cells: A Mini‐Review on Stability Challenges

Journal Article · Tue Feb 19 00:00:00 EST 2019 · Advanced Materials

DOI:https://doi.org/10.1002/adma.201807615· OSTI ID:1495061

^[1]; Dodelet, Jean‐Pol ^[2]; Wu, Gang ^[3]; Zelenay, Piotr ^[4]

Pacific Northwest National Laboratory Richland WA 99352 USA
INRS‐Énergie Matériaux et Télécommunications 1650 Boulevard Lionel Boulet Varennes Quebec J3X 1S2 Canada
Department of Chemical and Biological Engineering University at Buffalo The State University of New York Buffalo NY 14260 USA
Los Alamos National Laboratory Materials Physics and Applications Division Los Alamos NM 87545 USA

Abstract In recent years, significant progress has been achieved in the development of platinum group metal‐free (PGM‐free) oxygen reduction reaction (ORR) catalysts for proton exchange membrane (PEM) fuel cells. At the same time the limited durability of these catalysts remains a great challenge that needs to be addressed. This mini‐review summarizes the recent progress in understanding the main causes of instability of PGM‐free ORR catalysts in acidic environments, focusing on transition metal/nitrogen codoped systems (M‐N‐C catalysts, M: Fe, Co, Mn), particularly MN _x moiety active sites. Of several possible degradation mechanisms, demetalation and carbon oxidation are found to be the most likely reasons for M‐N‐C catalysts/cathodes degradation.

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Sponsoring Organization:: USDOE

OSTI ID:: 1495061

Journal Information:: Advanced Materials, Journal Name: Advanced Materials Vol. 31 Journal Issue: 31; ISSN 0935-9648

Publisher:: Wiley Blackwell (John Wiley & Sons)Copyright Statement

Country of Publication:: Germany

Language:: English

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