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Structural Optimization of Metal Oxyhalide for CO 2 Reduction with High Selectivity and Current Density
Author(s) -
Meng FanLu,
Zhang Qi,
Duan YanXin,
Liu KaiHua,
Zhang XinBo
Publication year - 2020
Publication title -
chinese journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 1001-604X
DOI - 10.1002/cjoc.202000203
Subject(s) - chemistry , formate , bismuth , faraday efficiency , electrochemistry , catalysis , selectivity , current density , reduction (mathematics) , metal , inorganic chemistry , combinatorial chemistry , chemical engineering , nanotechnology , electrode , organic chemistry , materials science , physics , mathematics , quantum mechanics , engineering , geometry
Summary of main observation and conclusion Electrochemical CO 2 reduction into value‐added liquid fuels using CO 2 neutral renewable energy sources is very promising to solve climatic issues. In order to realize their practical applications, highly active and inexpensive electrocatalysts are urgently required. In this study, we have experimentally achieved high electrocatalytic activity towards CO 2 reduction for the synthesis of formate with an enhanced current density of 15.1 mA·cm –2 and significantly improved Faradaic efficiency of 98.4% upon electrochemical reduced ultrathin bismuth oxybromide nanosheets. Moreover, the stable performance during 24 h of operation is also obtained. Furthermore, by detecting the exposed crystal plane after surface reorganization and applying density functional theory calculations, the possible reaction pathways and catalytic active plane of the derived bismuth catalyst are put forward, which would offer basic and design principles to directly develop the optimized metal Bi catalysts for enhanced electrocatalytic CO 2 conversion to formate.