Electroreduction of CO to valuable multicarbon (C) products is a highly attractive way to utilize and divert emitted CO. However, a major fraction of C selectivity is confined to less than 90% by the difficulty of coupling C-C bonds efficiently. Herein, we identify the stable Cu/Cu interfaces derived from copper phosphate-based (CuPO) electrocatalysts, which can facilitate C 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 CH in an H-cell, and exhibits a significant FE of 90.9% under industrially relevant current density (j = -350 mA cm) in a flow cell configuration. The stable Cu/Cu 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 C products.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10667242 | PMC |
| http://dx.doi.org/10.1038/s41467-023-43182-6 | DOI Listing |
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