Electroshock synthesis of a bifunctional nonprecious multi-element alloy for alkaline hydrogen oxidation and evolution.

ABSTRACT: The design and production of active, durable, and nonprecious electrocatalysts toward alkaline hydrogen oxidation and evolution reactions (HOR/HER) are extremely appealing for the implementation of hydrogen economy, but remain challenging. Here, we report a facile electric shock synthesis of an efficient, stable, and inexpensive NiCoCuMoW multi-element alloy on Ni foam (NiCoCuMoW) as a bifunctional electrocatalyst for both HOR and HER. For the HOR, the current density of NiCoCuMoW could reach ∼11.2 mA cm^-2 when the overpotential is 100 mV, higher than that for commercial Pt/C (∼7.2 mA cm^-2) and control alloy samples with less elements, along with superior CO tolerance. Moreover, for the HER, the overpotential at 10 mA cm^-2 for NiCoCuMoW is only 21 mV, along

SUBMITTER: Du L 

PROVIDER: S-EPMC10190983 | biostudies-literature | 2022 Dec

REPOSITORIES: biostudies-literature