Activity Origin and Catalyst Design Principles for Electrocatalytic Oxygen Evolution on Layered Transition Metal Oxide with Halogen Doping

• DOI: 10.1002/sstr.202100069
• Publication Date: 2021-07-21T05:43:39Z
• Authors: Zebi Zhao; Haonan Chang; Ruyue Wang; Peng Du; Xian He; Jingkai Yang; Xinlai Zhang; Kai Huang; Dongyu Fan; Yonggang Wang; Xuchao Pan; Ming Lei
• Keywords: Electronegativity; Heteroatom; Oxygen evolution; Cobalt oxide

The electronic structure of transition meatal oxides is in the predominant position among mostly central reactions, such as oxygen electroncatalysis, for applications energy storage. Herein, cobalt‐based catalysts are developed by taking advantage strong electronegativity halogen elements, whose activity and stability also guaranteed. A “theory–calculation–experiment” research system proposed to sort out relationship between heteroatoms layered CoO/F, CoO/Cl, CoO/Br, electrochemical evolution reaction (OER). Experiments corresponding calculations verify that stronger halide ions cobalt oxide catalyst, more obvious improvement OER performance. By understanding electronegative screening modification, a new perspective on designing principles water‐splitting devices based bandgap‐engineered metal proposed.