Direct atomic-level insight into the active sites of a high-performance PGM-free ORR catalyst-Reference-Cited by-同舟云学术

Direct atomic-level insight into the active sites of a high-performance PGM-free ORR catalyst

Published:2017-08-04 Issue:6350 Volume:357 Page:479-484
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Chung Hoon T.¹^ORCID,Cullen David A.²^ORCID,Higgins Drew¹,Sneed Brian T.³^ORCID,Holby Edward F.⁴^ORCID,More Karren L.³,Zelenay Piotr¹^ORCID

Affiliation:

1. Materials Physics and Applications Division, Los Alamos National Laboratory, Los Alamos, NM 87545, USA.

2. Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA.

3. Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA.

4. Sigma Division, Los Alamos National Laboratory, Los Alamos, NM 87545, USA.

Abstract

Replacing platinum in air-fed fuel cells Replacing expensive and scarce platinum catalysts in polymer electrolyte membrane fuel cells for the oxygen reduction reaction (ORR) with ones based on non-noble metals would speed up the adoption of hydrogen fuel vehicles. Most of the candidate replacement catalysts that have shown high performance do so only when running on pure oxygen. Chung et al. developed an iron-nitrogen-carbon catalyst from two nitrogen precursors that forms a high-porosity structure and exhibits high ORR performance when running on air. The proposed catalytically active site is FeN 4 . Science , this issue p. 479

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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