Monodispersed Cu-TCPP/Cu₂O Hybrid Microspheres: A Superior Cascade Electrocatalyst toward CO₂ Reduction to C₂ Products

Authors

Zi-Xuan Wan, New Energy Research Institute, School of Environment and Energy, South China University of Technology, Higher Education Mega Center, Guangzhou 510006, Guangdong, China
Aidar Kuchkaev, Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, Arbuzov Street 8, Kazan, 420088, Russian Federation
Dmitry Yakhvarov, Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, Arbuzov Street 8, Kazan, 420088, Russian Federation; Alexander Butlerov Institute of Chemistry, Kazan Federal University, Kremlyovskaya Street18, Kazan, 420008, Russian FederationFollow
Xiong-Wu Kang, New Energy Research Institute, School of Environment and Energy, South China University of Technology, Higher Education Mega Center, Guangzhou 510006, Guangdong, ChinaFollow

Corresponding Author

Xiong-Wu Kang(esxkang@scut.edu.cn);
Dmitry Yakhvarov (yakhvar@iopc.ru)

Abstract

The electrochemical conversion of carbon dioxide (CO₂) into valuable chemicals is a feasible way to mitigate the negative impacts of overmuch CO₂ emissions. Porphyrin-based metal organic frameworks (MOFs) are expected to be used for selective and efficient electrochemical CO₂ reduction (ECR) with porous structure and ordered active sites. Herein, we report the synthesis of a monodispersed and spherical organic/inorganic hybrid Cu-TCPP@Cu₂O electrocatalyst composed of Cu-TCPP (TCPP=tetrakis (4-carboxyphenyl) porphyrin) and Cu₂O, where TCPP plays significant roles in regulating the morphology. In-situ formed Cu during ECR process in combination with Cu-TCPP (Cu-TCPP@Cu) can suppress hydrogen evolution, enrich CO intermediate and promote C–C coupling toward C₂ products. The Cu-TCPP@Cu supported on porous carbon (PC) showed ultrafine Cu nanoclusters on PC, and displayed high ECR activity and selectivity toward C₂ products, with a C₂ faradaic efficiency of 62.3% at -1.0 V versus the reversible hydrogen electrode and a C₂ partial current density of 83.4 mA·cm^-2, which is 7.6 times and 13.1 times those of pure Cu₂O and TCPP, respectively. The morphology and hybrid structure of the catalyst were studied to improve the selectivity of ECR to produce C₂ products, which provides a new idea for the design of high-performance ECR catalyst.

Graphical Abstract

Keywords

Organic/inorganic hybrid electrocatalysts; TCPP; Cuprous oxide; Cascade electrocatalysts

DOI Link

https://doi.org/10.13208/j.electrochem.2303271

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

Publication Date

2024-01-28

Online Available Date

2023-06-14

Revised Date

2023-05-15

Received Date

2023-04-07

Recommended Citation

Zi-Xuan Wan, Aidar Kuchkaev, Dmitry Yakhvarov, Xiong-Wu Kang. Monodispersed Cu-TCPP/Cu₂O Hybrid Microspheres: A Superior Cascade Electrocatalyst toward CO₂ Reduction to C₂ Products[J]. Journal of Electrochemistry, 2024 , 30(1): 2303271.
DOI: 10.13208/j.electrochem.2303271
Available at: https://jelectrochem.xmu.edu.cn/journal/vol30/iss1/3