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Metal–Organic Layers Leading to Atomically Thin Bismuthene for Efficient Carbon Dioxide Electroreduction to Liquid Fuel
Author(s) -
Cao Changsheng,
Ma DongDong,
Gu JiaFang,
Xie Xiuyuan,
Zeng Guang,
Li Xiaofang,
Han ShuGuo,
Zhu QiLong,
Wu XinTao,
Xu Qiang
Publication year - 2020
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.202005577
Subject(s) - formate , electrochemistry , materials science , selectivity , bismuth , metal organic framework , chemical engineering , electrochemical energy conversion , electrochemical reduction of carbon dioxide , metal , catalysis , nanotechnology , inorganic chemistry , electrode , chemistry , carbon monoxide , organic chemistry , engineering , metallurgy , adsorption
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.
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