MXene Nanoarchitectonics: Defect‐Engineered 2D MXenes towards Enhanced Electrochemical Water Splitting

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  • Yi Tang
    Electronic Materials Research Laboratory Key Laboratory of the Ministry of Education & International Center for Dielectric Research and Shaanxi Engineering Research Center of Advanced Energy Materials and Devices School of Electronic Science & Engineering Xi'an Jiaotong University No. 28, Xianning West Road Xi'an Shaanxi 710049 P. R. China
  • Chenhui Yang
    Department of Chemistry School of Chemistry and Chemical Engineering Northwestern Polytechnical University No. 1 Dongxiang Road, Chang'an District Xi'an Shaanxi 710129 P. R. China
  • Xingtao Xu
    JST‐ERATO Yamauchi Materials Space‐Tectonics Project International Center for Materials Nanoarchitechtonics (WPI‐MANA) National Institute for Materials Science (NIMS) 1‐1 Namiki Tsukuba Ibaraki 305‐0044 Japan
  • Yunqing Kang
    JST‐ERATO Yamauchi Materials Space‐Tectonics Project International Center for Materials Nanoarchitechtonics (WPI‐MANA) National Institute for Materials Science (NIMS) 1‐1 Namiki Tsukuba Ibaraki 305‐0044 Japan
  • Joel Henzie
    JST‐ERATO Yamauchi Materials Space‐Tectonics Project International Center for Materials Nanoarchitechtonics (WPI‐MANA) National Institute for Materials Science (NIMS) 1‐1 Namiki Tsukuba Ibaraki 305‐0044 Japan
  • Wenxiu Que
    Electronic Materials Research Laboratory Key Laboratory of the Ministry of Education & International Center for Dielectric Research and Shaanxi Engineering Research Center of Advanced Energy Materials and Devices School of Electronic Science & Engineering Xi'an Jiaotong University No. 28, Xianning West Road Xi'an Shaanxi 710049 P. R. China
  • Yusuke Yamauchi
    JST‐ERATO Yamauchi Materials Space‐Tectonics Project International Center for Materials Nanoarchitechtonics (WPI‐MANA) National Institute for Materials Science (NIMS) 1‐1 Namiki Tsukuba Ibaraki 305‐0044 Japan

説明

<jats:title>Abstract</jats:title><jats:p>2D MXenes‐based nanoarchitectures are being actively explored for electrocatalytic water splitting because they possess physical and physiochemical properties that enhance catalytic activity toward the hydrogen evolution reaction and oxygen evolution reaction. This review systematically summarizes current strategies involved in defect engineering, including introducing atomic vacancies and active edges, and doping with metal and non‐metal atoms, which have been employed to achieve high‐efficiency MXenes‐based catalysts. The electronic structures, optimized adsorption/desorption energies of the intermediates, and possible catalytic mechanisms resulting from various defects are disclosed based on combined experimental results and theoretical calculations. Current challenges and future opportunities for the mechanistic investigation and practical application of defective MXenes‐based catalysts are proposed. This report aims to reveal the nature of defective MXenes electrocatalysts and to provide valuable guidelines for designing defective MXenes‐based nanoarchitectures for various catalytic reactions.</jats:p>

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