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Exfoliated Ultrathin ZnIn 2 S 4 Nanosheets with Abundant Zinc Vacancies for Enhanced CO 2 Electroreduction to Formate
Author(s) -
Wang Zhitong,
Qi Ruijuan,
Liu Dongyu,
Zhao Xiaodie,
Huang Lei,
Chen Shenghua,
Chen Zhiquan,
Li Mingtao,
You Bo,
Pang Yuanjie,
Yu Xia Bao
Publication year - 2021
Publication title -
chemsuschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.412
H-Index - 157
eISSN - 1864-564X
pISSN - 1864-5631
DOI - 10.1002/cssc.202002785
Subject(s) - formate , faraday efficiency , selectivity , catalysis , materials science , zinc , chemical engineering , inorganic chemistry , carbon fibers , nanotechnology , electrochemistry , electrode , chemistry , organic chemistry , metallurgy , composite material , composite number , engineering
Electrocatalytic conversion of carbon dioxide (CO 2 ) is promising for balancing carbon cycles while producing value‐added feedstocks. Herein, ultrathin ZnIn 2 S 4 nanosheets with abundant Zn vacancies are demonstrated for electrochemically reducing CO 2 to formate. Specifically, a partial current density of 245 mA cm −2 with a near‐unity faradaic efficiency of 94 % for formate generation was achieved over the ultrathin ZnIn 2 S 4 nanosheets in a flow cell configuration. Experimental and theoretical results revealed that abundant Zn vacancies in the ultrathin ZnIn 2 S 4 nanosheets with a high electrochemically active surface area synergistically optimized the intermediate binding energy and contributed to the boosted selectivity and activity. This work may provide useful understandings in designing efficient catalysts for selective CO 2 electroreduction.