Dai Jiawei, Zhu Jiannan, Xu You, Liu Xiaoling, Zhu Deyu, Xu Guichan, Liu Hongfang, Li Guangfang
Key Laboratory of Material Chemistry for Energy Conversion and Storage (Ministry of Education), Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, 430074, P. R. China.
ChemSusChem. 2025 May 5;18(9):e202402184. doi: 10.1002/cssc.202402184. Epub 2025 Jan 9.
Electrochemical carbon dioxide reduction reaction (CORR) to highly value-added multi-carbon (C) fuels or chemicals is a promising pathway to address environment issues and energy crisis. In the periodic table, Cu as only the candidate can convert CO to C products such as CH and CHOH due to the suitable absorption energy to reaction intermediate. However, application of Cu is limited for its low activity and poor selectivity. The tandem catalytic strategy can effectively solve the problems caused by single copper catalyst. In tandem catalysis, how to promote the formation, transport, adsorption and coupling of the important intermediate CO is the key issue to improve the selectivity of C products. Regulating the structure of Cu-based bimetallic can effectively promote these processes to Electrochemical CORR on account of its synergistic effect, electronic effect and interfacial interaction. In this review, we systematically summarized the relationship between structure of Cu-based bimetallic catalysts with performance of electrochemical CORR. More importantly, we reveal that different Cu-based bimetallic structures enhance the activity and selectivity of the catalysts by regulating the processes such as the transport and adsorption of the reaction intermediate CO. Then, we proposed well-effective strategies to rationally design Cu-based metallic catalysts. Finally, we put forward some challenges and opportunities that Cu-based bimetallic catalysts would face in the development of electrochemical CORR technology in the future.
将电化学二氧化碳还原反应（CORR）转化为高附加值的多碳（C）燃料或化学品是解决环境问题和能源危机的一条有前途的途径。在元素周期表中，由于对反应中间体具有合适的吸附能，Cu是唯一能够将CO转化为C产物（如CH和CHOH）的候选元素。然而，Cu因其低活性和差的选择性而应用受限。串联催化策略可以有效解决单一铜催化剂所带来的问题。在串联催化中，如何促进重要中间体CO的形成、传输、吸附和偶联是提高C产物选择性的关键问题。由于其协同效应、电子效应和界面相互作用，调控铜基金属双原子的结构可以有效地促进这些过程以实现电化学CORR。在这篇综述中，我们系统地总结了铜基金属双原子催化剂的结构与电化学CORR性能之间的关系。更重要的是，我们揭示了不同的铜基金属双原子结构通过调控反应中间体CO的传输和吸附等过程来提高催化剂的活性和选择性。然后，我们提出了合理设计铜基金属催化剂的有效策略。最后，我们提出了铜基金属双原子催化剂在未来电化学CORR技术发展中可能面临的一些挑战和机遇。
