Synthesis and Electrochemical Study of CuAu Nanodendrites for CO2 Reduction

doi:10.13208/j.electrochem.201253

Abstract

Abstract:

The conversion of carbon dioxide (CO₂) to carbon monoxide (CO) and other value-added products is an interesting approach for carbon-containing fuel synthesis using renewable and clean energy. The electrochemical reduction of CO₂ is one of the promising strategies for the storage of intermittent renewable energy resources. The development of electrocatalysts with high activity and stability is vital in the electrochemical CO₂ reduction process. In this study, copper and gold alloyed (CuAu) electrodes with nanodendritic structures were synthesized using a facile electrodeposition method. The CuAu nanodendrites with the atomic ratio of Cu to Au being approximately 1:1 demonstrated excellent catalytic activity for the electrochemical reduction of CO₂. Syngas, which is utilized as an intermediate in the production of synthetic natural gas, ammonia, and methanol, was the major product obtained under various applied potentials. Electrochemical impedance spectroscopic (EIS) measurements revealed that the CuAu nanodendrtic catalyst had a much lower charge transfer resistance than Cu and Au electrodeposited catalysts. The CuAu nanodendrite catalyst is an intriguing material with potential applications for syngas production from CO₂.

Key words: electrocatalysis, electrodeposition, CO₂ reduction reaction, CuAu nanocomposite, nanodendrites

Dylan Siltamaki, Shuai Chen, Farnood Rahmati, Jacek Lipkowski, Ai-Cheng Chen. Synthesis and Electrochemical Study of CuAu Nanodendrites for CO₂ Reduction[J]. Journal of Electrochemistry, 2021, 27(3): 278-290.

Figures/Tables 8

References 62

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Synthesis and Electrochemical Study of CuAu Nanodendrites for CO₂ Reduction

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