In:
Angewandte Chemie, Wiley, Vol. 130, No. 7 ( 2018-02-12), p. 1962-1966
Abstract:
The design of active, selective, and stable CO 2 reduction electrocatalysts is still challenging. A series of atomically dispersed Co catalysts with different nitrogen coordination numbers were prepared and their CO 2 electroreduction catalytic performance was explored. The best catalyst, atomically dispersed Co with two‐coordinate nitrogen atoms, achieves both high selectivity and superior activity with 94 % CO formation Faradaic efficiency and a current density of 18.1 mA cm −2 at an overpotential of 520 mV. The CO formation turnover frequency reaches a record value of 18 200 h −1 , surpassing most reported metal‐based catalysts under comparable conditions. Our experimental and theoretical results demonstrate that lower a coordination number facilitates activation of CO 2 to the CO 2 .− intermediate and hence enhances CO 2 electroreduction activity.
Type of Medium:
Online Resource
ISSN:
0044-8249
,
1521-3757
DOI:
10.1002/ange.201712451
Language:
English
Publisher:
Wiley
Publication Date:
2018
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514305-6
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505872-7
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1479266-7
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