BiPO4 -Derived 2D Nanosheets for Efficient Electrocatalytic Reduction of CO2 to Liquid Fuel

Yating Wang; Yuhang Li; Jinze Liu; Chunxiao Dong; Chuqian Xiao; Ling Cheng; Hongliang Jiang; Hao Jiang; Chunzhong Li

doi:10.1002/anie.202014341

BiPO₄ -Derived 2D Nanosheets for Efficient Electrocatalytic Reduction of CO₂ to Liquid Fuel

Angew Chem Int Ed Engl. 2021 Mar 29;60(14):7681-7685. doi: 10.1002/anie.202014341. Epub 2021 Mar 3.

Authors

Yating Wang¹, Yuhang Li¹, Jinze Liu², Chunxiao Dong¹, Chuqian Xiao¹, Ling Cheng¹, Hongliang Jiang², Hao Jiang^{1

2}, Chunzhong Li^{1

2}

Affiliations

¹ Key Laboratory for Ultrafine Materials of Ministry of Education, Shanghai Engineering Research Center of Hierarchical Nanomaterials, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Materials Science and Engineering, East China University of Science & Technology, Shanghai, 200237, China.
² School of Chemical Engineering, East China University of Science & Technology, Shanghai, 200237, China.

PMID: 33439516
DOI: 10.1002/anie.202014341

Abstract

The electrochemical reduction of carbon dioxide (CO₂ ) to high-value liquid fuel with high selectivity is appealing for energy conversion and storage. Here we report a bismuth phosphate (BiPO₄ ) derived 2D nanosheet-like electrocatalyst that efficiently converts CO₂ into liquid-phase formate. The catalyst presents a formate Faradaic efficiency of over 90 % and a cathodic energy efficiency of 73 % at an industrially relevant current density of 200 mA cm^-2 in the flow cell. The in situ generation of the Bi-O active species on the catalyst surface was determined via operando Raman measurement. Morphological and X-ray photoelectron spectroscopy analyses reveal the origin of the high activity for the electrosynthesis of formate from CO₂ and water: the 2D structure together with the abundant insertion of oxygen atoms in the surface of the BiPO₄ -derived nanosheets.

Keywords: CO2 reduction; bismuth phosphate; electrochemistry; formate.