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Article

One-Step Electrochemical Dealloying of 3D Bi-Continuous Micro-Nanoporous Bismuth Electrodes and CO2RR Performance

by
Wenqin Lai
1,
Yating Liu
1,
Mingming Zeng
1,
Dongmei Han
1,2,
Min Xiao
1,
Shuanjin Wang
1,
Shan Ren
1,* and
Yuezhong Meng
1,2,*
1
The Key Laboratory of Low-Carbon Chemistry & Energy Conservation of Guangdong Province, State Key Laboratory of Optoelectronic Materials and Technologies, School of Materials Science and Engineering, Sun Yat-sen University, Guangzhou 510275, China
2
School of Chemical Engineering and Technology, Sun Yat-sen University, Zhuhai 519000, China
*
Authors to whom correspondence should be addressed.
Nanomaterials 2023, 13(11), 1767; https://doi.org/10.3390/nano13111767
Submission received: 12 May 2023 / Revised: 27 May 2023 / Accepted: 29 May 2023 / Published: 30 May 2023
(This article belongs to the Special Issue Modification Strategies on Engineering Electrocatalysts Related to Nanomaterials)
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Abstract

The rapid development of electrochemical CO2 reduction offers a promising route to convert intermittent renewable energy into products of high value-added fuels or chemical feedstocks. However, low faradaic efficiency, low current density, and a narrow potential range still limit the large-scale application of CO2RR electrocatalysts. Herein, monolith 3D bi-continuous nanoporous bismuth (np-Bi) electrodes are fabricated via a simple one-step electrochemical dealloying strategy from Pb-Bi binary alloy. The unique bi-continuous porous structure ensures highly effective charge transfer; meanwhile, the controllable millimeter-sized geometric porous structure enables easy catalyst adjustment to expose highly suitable surface curvatures with abundant reactive sites. This results in a high selectivity of 92.6% and superior potential window (400 mV, selectivity > 88%) for the electrochemical reduction of carbon dioxide to formate. Our scalable strategy provides a feasible pathway for mass-producing high-performance and versatile CO2 electrocatalysts.
Keywords: nanoporous; dealloying; 3D architectures; CO2 reduction; formate nanoporous; dealloying; 3D architectures; CO2 reduction; formate

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MDPI and ACS Style

Lai, W.; Liu, Y.; Zeng, M.; Han, D.; Xiao, M.; Wang, S.; Ren, S.; Meng, Y. One-Step Electrochemical Dealloying of 3D Bi-Continuous Micro-Nanoporous Bismuth Electrodes and CO2RR Performance. Nanomaterials 2023, 13, 1767. https://doi.org/10.3390/nano13111767

AMA Style

Lai W, Liu Y, Zeng M, Han D, Xiao M, Wang S, Ren S, Meng Y. One-Step Electrochemical Dealloying of 3D Bi-Continuous Micro-Nanoporous Bismuth Electrodes and CO2RR Performance. Nanomaterials. 2023; 13(11):1767. https://doi.org/10.3390/nano13111767

Chicago/Turabian Style

Lai, Wenqin, Yating Liu, Mingming Zeng, Dongmei Han, Min Xiao, Shuanjin Wang, Shan Ren, and Yuezhong Meng. 2023. "One-Step Electrochemical Dealloying of 3D Bi-Continuous Micro-Nanoporous Bismuth Electrodes and CO2RR Performance" Nanomaterials 13, no. 11: 1767. https://doi.org/10.3390/nano13111767

APA Style

Lai, W., Liu, Y., Zeng, M., Han, D., Xiao, M., Wang, S., Ren, S., & Meng, Y. (2023). One-Step Electrochemical Dealloying of 3D Bi-Continuous Micro-Nanoporous Bismuth Electrodes and CO2RR Performance. Nanomaterials, 13(11), 1767. https://doi.org/10.3390/nano13111767

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