Precious Metal-Free Nickel Nitride Catalyst for the Oxygen Reduction Reaction.

Kreider, Melissa E, Gallo, Alessandro, Back, Seoin, Liu, Yunzhi, Siahrostami, Samira, Nordlund, Dennis, Sinclair, Robert, Nørskov, Jens K, King, Laurie A ORCID: https://orcid.org/0000-0002-0772-2378 and Jaramillo, Thomas F (2019) Precious Metal-Free Nickel Nitride Catalyst for the Oxygen Reduction Reaction. ACS Applied Materials and Interfaces, 11 (30). pp. 26863-26871. ISSN 1944-8244

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Official URL: https://pubs.acs.org/doi/10.1021/acsami.9b07116

Abstract

With promising activity and stability for the oxygen reduction reaction (ORR), transition metal nitrides are an interesting class of non-platinum group catalysts for polymer electrolyte membrane fuel cells. Here, we report an active thin-film nickel nitride catalyst synthesized through a reactive sputtering method. In rotating disk electrode testing in a 0.1 M HClO4 electrolyte, the crystalline nickel nitride film achieved high activity and selectivity to four-electron ORR. It also exhibited good stability during 10 and 40 h chronoamperometry measurements in acid and alkaline electrolyte, respectively. A combined experiment-theory approach, with detailed ex situ materials characterization and density functional theory calculations, provides insight into the structure of the catalyst and its surface during catalysis. Design strategies for activity and stability improvement through alloying and nanostructuring are discussed.

Item Type:	Article
Peer-reviewed:	Yes
Date Deposited:	05 Nov 2019 09:52
Publisher:	American Chemical Society (ACS)
Additional Information:	This is an Author Accepted Manuscript of an article published in ACS Applied Materials and Interfaces by ACS.
Divisions:	Faculties > Science and Engineering
Subject terms:	Science & Technology, Technology, Nanoscience & Nanotechnology, Materials Science, Multidisciplinary, Science & Technology - Other Topics, Materials Science, electrocatalysis, oxygen reduction reaction, nonprecious metal catalysts, transition metal nitrides, reactive sputter deposition, density functional theory, ACTIVE-SITES, FUEL-CELLS, EFFICIENT, OXIDE, ELECTROCATALYSTS, NITROGEN, SPECTRA, CO, STABILITY, OXIDATION, density functional theory, electrocatalysis, nonprecious metal catalysts, oxygen reduction reaction, reactive sputter deposition, transition metal nitrides, 0904 Chemical Engineering, 0303 Macromolecular and Materials Chemistry, 0306 Physical Chemistry (incl. Structural), Nanoscience & Nanotechnology
URI:	https://e-space.mmu.ac.uk/id/eprint/624296
DOI:	https://doi.org/10.1021/acsami.9b07116
ISSN	1944-8244
e-ISSN	1944-8252

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