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Title: PGM-free Cathode Catalysts for PEM Fuel Cells: a Mini-Review on Stability Challenges

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. In this mini-review, we summarize the recent progress in understanding the main causes of instability of PGM-free ORR catalysts in acidic environments, focusing on transition metal/nitrogen co-doped systems (M-N-C catalysts, M: Fe, Co, Mn). Of several possible degradation mechanisms, demetalation and carbon oxidation are found to be the most likely reasons for M-N-C catalysts/cathodes degradation.

Authors:
ORCiD logo [1];  [2];  [3];  [4]
  1. BATTELLE (PACIFIC NW LAB)
  2. National Institute of Scientific Research
  3. State University of New York
  4. Los Alamos National Lab
Publication Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1598818
Report Number(s):
PNNL-SA-139979
DOE Contract Number:  
AC05-76RL01830
Resource Type:
Journal Article
Journal Name:
Advanced Materials
Additional Journal Information:
Journal Volume: 31; Journal Issue: 31
Country of Publication:
United States
Language:
English

Citation Formats

Shao, Yuyan, Dodelet, Jean-Pol, Wu, Gang, and Zelenay, Piotr. PGM-free Cathode Catalysts for PEM Fuel Cells: a Mini-Review on Stability Challenges. United States: N. p., 2019. Web. doi:10.1002/adma.201807615.
Shao, Yuyan, Dodelet, Jean-Pol, Wu, Gang, & Zelenay, Piotr. PGM-free Cathode Catalysts for PEM Fuel Cells: a Mini-Review on Stability Challenges. United States. doi:10.1002/adma.201807615.
Shao, Yuyan, Dodelet, Jean-Pol, Wu, Gang, and Zelenay, Piotr. Fri . "PGM-free Cathode Catalysts for PEM Fuel Cells: a Mini-Review on Stability Challenges". United States. doi:10.1002/adma.201807615.
@article{osti_1598818,
title = {PGM-free Cathode Catalysts for PEM Fuel Cells: a Mini-Review on Stability Challenges},
author = {Shao, Yuyan and Dodelet, Jean-Pol and Wu, Gang and Zelenay, Piotr},
abstractNote = {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. In this mini-review, we summarize the recent progress in understanding the main causes of instability of PGM-free ORR catalysts in acidic environments, focusing on transition metal/nitrogen co-doped systems (M-N-C catalysts, M: Fe, Co, Mn). Of several possible degradation mechanisms, demetalation and carbon oxidation are found to be the most likely reasons for M-N-C catalysts/cathodes degradation.},
doi = {10.1002/adma.201807615},
journal = {Advanced Materials},
number = 31,
volume = 31,
place = {United States},
year = {2019},
month = {8}
}

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