Hierarchical Cobalt-Doped Molybdenum-Nickel Nitride Nanowires as Multifunctional Electrocatalysts.

Author(s) Yin, Z.; Sun, Y.; Jiang, Y.; Yan, F.; Zhu, C.; Chen, Y.
Journal ACS Appl Mater Interfaces
Date Published 2019 Jul 15

Herein we demonstrate hierarchically porous Co-doped MoNi nitride nanowires for multifunctional electrocatalysts. After the Co incorporation for water electrolysis and zinc-air systems, the active surface area is enhanced, while and the charge-transfer and mass-transfer resistance is reduced significantly. Due to the dual modulation in the electric conductivity and active surface area induced by the Co doping, the hierarchically porous trimetal nitrides shows high activity and good stability for hydrogen evolution (HER), oxygen evolution (OER) and oxygen reduction reactions (ORR). The two-electrode electrolyser assembled by the bifunctional electrocatalysts can deliver 10 mA cm-2 at a voltage of merely 1.57 V, among the best reported electrocatalysts. In the meanwhile, two all-solid-state zinc-air batteries in series can power more than 50 red Light-emitting diodes and the two-electrode electrolyser catalysed by the multifunctional electrocatalysts with excellent operation stability.

DOI 10.1021/acsami.9b06543
ISSN 1944-8252
Citation ACS Appl Mater Interfaces. 2019.

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