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Direct OC-CHO coupling towards highly C2+ products selective electroreduction over stable Cu0/Cu2+ interface.

ABSTRACT: Electroreduction of CO2 to valuable multicarbon (C2+) products is a highly attractive way to utilize and divert emitted CO2. However, a major fraction of C2+ selectivity is confined to less than 90% by the difficulty of coupling C-C bonds efficiently. Herein, we identify the stable Cu0/Cu2+ interfaces derived from copper phosphate-based (CuPO) electrocatalysts, which can facilitate C2+ production with a low-energy pathway of OC-CHO coupling verified by in situ spectra studies and theoretical calculations. The CuPO precatalyst shows a high Faradaic efficiency (FE) of 69.7% towards C2H4 in an H-cell, and exhibits a significant FEC2+ of 90.9% under industrially relevant current density (j = -350 mA cm-2) in a flow cell configuration. The stable Cu0/Cu2+ interface breaks new ground for the structural design of electrocatalysts and the construction of synergistic active sites to improve the activity and selectivity of valuable C2+ products.

SUBMITTER: Zhang XY 

PROVIDER: S-EPMC10667242 | biostudies-literature | 2023 Nov

REPOSITORIES: biostudies-literature

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Direct OC-CHO coupling towards highly C<sub>2+</sub> products selective electroreduction over stable Cu<sup>0</sup>/Cu<sup>2+</sup> interface.

Zhang Xin Yu XY   Lou Zhen Xin ZX   Chen Jiacheng J   Liu Yuanwei Y   Wu Xuefeng X   Zhao Jia Yue JY   Yuan Hai Yang HY   Zhu Minghui M   Dai Sheng S   Wang Hai Feng HF   Sun Chenghua C   Liu Peng Fei PF   Yang Hua Gui HG  

Nature communications 20231124 1

Electroreduction of CO<sub>2</sub> to valuable multicarbon (C<sub>2+</sub>) products is a highly attractive way to utilize and divert emitted CO<sub>2</sub>. However, a major fraction of C<sub>2+</sub> selectivity is confined to less than 90% by the difficulty of coupling C-C bonds efficiently. Herein, we identify the stable Cu<sup>0</sup>/Cu<sup>2+</sup> interfaces derived from copper phosphate-based (CuPO) electrocatalysts, which can facilitate C<sub>2+</sub> production with a low-energy pathw  ...[more]

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