# Design of Single-Atom Co–N5 Catalytic Site: A Robust Electrocatalyst for CO2 Reduction with Nearly 100% CO Selectivity and Remarkable Stability

“Design of Single-Atom Co–N5 Catalytic Site: A Robust Electrocatalyst for CO2 Reduction with Nearly 100% CO Selectivity and Remarkable Stability” (2018), by Yuan Pan et al. Energy research paper. Original abstract below, unchanged. No free PDF was found.

- Authors: Yuan Pan, Rui Lin, Yinjuan Chen, Shoujie Liu, Wei Dong Zhu, Xing Cao, Wenxing Chen, Konglin Wu, Weng-Chon Max Cheong, Yu Wang et al.
- Published: March 8, 2018
- Field: Energy
- DOI: https://doi.org/10.1021/jacs.8b00814
- Source: https://doi.org/10.1021/jacs.8b00814

## Abstract

We develop an N-coordination strategy to design a robust CO 2 reduction reaction (CO 2 RR) electrocatalyst with atomically dispersed Co–N 5 site anchored on polymer-derived hollow N-doped porous carbon spheres. Our catalyst exhibits high selectivity for CO 2 RR with CO Faradaic efficiency (FE CO ) above 90% over a wide potential range from −0.57 to −0.88 V (the FE CO exceeded 99% at −0.73 and −0.79 V). The CO current density and FE CO remained nearly unchanged after electrolyzing 10 h, revealing remarkable stability. Experiments and density functional theory calculations demonstrate single-atom Co–N 5 site is the dominating active center simultaneously for CO 2 activation, the rapid formation of key intermediate COOH* as well as the desorption of CO.

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