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Bifunctional PtCu Electrocatalysts for N2 Reduction Reaction under Ambient Conditions and Methanol Oxidation

Abstract

In our work, we demonstrated a network PtCu nanocrystals, in which the tuneable composition, clean surface, and ultrasmall size (diameter < 5 nm) endow them with excellent electrocatalytic performances in both N2 reduction reaction under ambient condition and methanol oxidation. A detailed investigation suggests that their electrocatalytic activity is highly composition dependent. We confirmed the production of NH3 from N2 through a systematic study. The optimum Pt6Cu nanoalloys exhibit 2.3-fold and 20.6-fold increase in reduction activity toward N2 compared with Pt and Cu nanocrystals. The faradic efficiency value was also highly improved. Moreover, the bifunctional Pt6Cu nanostructures also show excellent catalytic properties during the methanol electrooxidation. The specific activity towards methanol oxidation reaches up to 21.3 mA·cm−2, which is 3.6 times that of commercial Pt/C catalysts. This work thus provides a promising approach to construct the alloy composition for bi- or multi-functional applications.

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Supplementary files

Article information


Submitted
09 Jan 2020
Accepted
06 Feb 2020
First published
07 Feb 2020

Inorg. Chem. Front., 2020, Accepted Manuscript
Article type
Research Article

Bifunctional PtCu Electrocatalysts for N2 Reduction Reaction under Ambient Conditions and Methanol Oxidation

C. Fang, J. Hu, X. Jiang, Z. Cui, X. Xu and T. Bi, Inorg. Chem. Front., 2020, Accepted Manuscript , DOI: 10.1039/D0QI00035C

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