articleNature CommunicationsAug 6, 2022GOLD OA

Insights into the activity of nickel boride/nickel heterostructures for efficient methanol electrooxidation

East China University of Science and Technology · Anhui University · +1 more institution

PubMed
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Abstract

Abstract Designing efficient catalysts and understanding the underlying mechanisms for anodic nucleophile electrooxidation are central to the advancement of electrochemically-driven technologies. Here, a heterostructure of nickel boride/nickel catalyst is developed to enable methanol electrooxidation into formate with a Faradaic efficiency of nearly 100%. Operando electrochemical impedance spectroscopy and in situ Raman spectroscopy are applied to understand the influence of methanol concentration in the methanol oxidation reaction. High concentrations of methanol inhibit the phase transition of the electrocatalyst to high-valent electro-oxidation products, and electrophilic oxygen species (O* or OH*) formed…

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