In:
Angewandte Chemie, Wiley, Vol. 132, No. 35 ( 2020-08-24), p. 15124-15130
Abstract:
Electrochemical reduction of CO 2 to valuable fuels is appealing for CO 2 fixation and energy storage. However, the development of electrocatalysts with high activity and selectivity in a wide potential window is challenging. Herein, atomically thin bismuthene (Bi‐ene) is pioneeringly obtained by an in situ electrochemical transformation from ultrathin bismuth‐based metal–organic layers. The few‐layer Bi‐ene, which possesses a great mass of exposed active sites with high intrinsic activity, has a high selectivity (ca. 100 %), large partial current density, and quite good stability in a potential window exceeding 0.35 V toward formate production. It even deliver current densities that exceed 300.0 mA cm −2 without compromising selectivity in a flow‐cell reactor. Using in situ ATR‐IR spectra and DFT analysis, a reaction mechanism involving HCO 3 − for formate generation was unveiled, which brings new fundamental understanding of CO 2 reduction.
Type of Medium:
Online Resource
ISSN:
0044-8249
,
1521-3757
DOI:
10.1002/ange.v132.35
DOI:
10.1002/ange.202005577
Language:
English
Publisher:
Wiley
Publication Date:
2020
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