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Title: Electrocatalytic Hydrogen Evolution and Hydrogen Oxidation with a Ni(PS) 2 Complex: Electrocatalytic Hydrogen Evolution and Hydrogen Oxidation with a Ni(PS) 2 Complex
Authors:
 ;  ;  ;  
Publication Date:
NSF-PAR ID:
10039733
Journal Name:
European Journal of Inorganic Chemistry
Volume:
2017
Issue:
31
Page Range or eLocation-ID:
p. 3714-3719
ISSN:
1434-1948
Publisher:
Wiley Blackwell (John Wiley & Sons)
Sponsoring Org:
National Science Foundation
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  1. This paper reports a highly active and stable nonprecious metal electrocatalyst based on bimetallic nanoscale nickel molybdenum nitride developed for the hydrogen evolution reaction (HER). A composite of 7 nm Ni 2 Mo 3 N nanoparticles grown on nickel foam (Ni 2 Mo 3 N/NF) was prepared through a simple and economical synthetic method involving one-step annealing of Ni foam, MoCl 5 , and urea without a Ni precursor. The Ni 2 Mo 3 N/NF exhibits high activity with low overpotential ( η 10 of 21.3 mV and η 100 of 123.8 mV) and excellent stability for the HER, achieving one of the best performances among state-of-the-art transition metal nitride based catalysts in alkaline media. Supporting density functional theory (DFT) calculations indicate that N sites in Ni 2 Mo 3 N with a N–Mo coordination number of four have a hydrogen adsorption energy close to that of Pt and hence may be responsible for the enhanced HER performance.