Heazlewoodite, Ni[subscript 3]S[subscript 2]: A Potent Catalyst for Oxygen Reduction to Water under Benign Conditions
Name
JACS Com Manuscript Revisions_Final_Typos.pdf
Size
4.9 MB
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Adobe PDF
Checksum (MD5)
b7c2cbb0cfe58f8336a46d554985dc04
Author(s)
Falkowski, Joseph
Concannon, Nolan M.
Yan, Bing
Surendranath, Yogesh
Alternative Title
Heazlewoodite, Ni3S2: A Potent Catalyst for Oxygen Reduction to Water under Benign Conditions
Date Issued
June 2015
Journal
Journal of the American Chemical Society
Publisher
American Chemical Society (ACS)
Citation
Falkowski, Joseph M., Nolan M. Concannon, Bing Yan, and Yogesh Surendranath. “ Heazlewoodite, Ni[subscript 3]S[subscript 2] : A Potent Catalyst for Oxygen Reduction to Water Under Benign Conditions .” Journal of the American Chemical Society 137, no. 25 (July 2015): 7978–7981.
Version
Author's final manuscript
Abstract
Electrodeposited thin films and nanoparticles of Ni[subscript 3]S[subscript 2] are highly active, poison- and corrosion-resistant catalysts for oxygen reduction to water at neutral pH. In pH 7 phosphate buffer, Ni[subscript 3]S[subscript 2] displays catalytic onset at 0.8 V versus the reversible hydrogen electrode, a Tafel slope of 109 mV decade[superscript –1], and high faradaic efficiency for four-electron reduction of O[subscript 2] to water. Under these conditions, the activity and stability of Ni[subscript 3]S[subscript 2] exceeds that of polycrystalline platinum and manganese, nickel, and cobalt oxides, illustrating the catalytic potential of pairing labile first-row transition metal active sites with a more covalent sulfide host lattice.
MIT Department
Massachusetts Institute of Technology. Department of Chemistry
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DOI of Published Version
https://doi.org/10.1021/jacs.5b03426
