Emerging dynamic structure of electrocatalysts unveiled by: In situ X-ray diffraction/absorption spectroscopy

Yanping Zhu, Tsung Rong Kuo, Yue Hua Li, Ming Yu Qi, Gao Chen, Jiali Wang, Yi Jun Xu, Hao Ming Chen

Research output: Contribution to journalReview articlepeer-review

32 Citations (Scopus)

Abstract

Highly-efficient oxygen evolution reaction (OER) and reduction of carbon dioxide (CO2RR) represent the two biggest scientific challenges in artificial photosynthesis. Many efficient and cost-affordable electrocatalysts have been reported in the development of electrochemical OER and CO2RR; however, during the electro-derived oxidation or reduction processes, a critical fact that, most catalysts tend to undergo structural reconstruction and/or surface rearrangement, has been widely observed, which greatly subverts the traditional conception of "catalysts". In this respect, the research trends have gradually transferred from optimizing catalyst materials to elucidating the real active sites of the catalysts as well as understanding the underlying mechanisms behind these complex reactions. Most importantly, the in situ/operando characterization techniques are powerful tools to achieve this goal. Herein, recent advances in the in situ X-ray diffraction and absorption spectroscopy that have provided a unique opportunity to investigate the structural reconstruction and/or surface rearrangement of catalysts under realistic OER and CO2RR conditions are thoroughly reviewed. Finally, the challenges of the material design are discussed, and the future perspective for developing next-generation catalysts with imperative requirements of material nature is provided. This journal is

Original languageEnglish
Pages (from-to)1928-1958
Number of pages31
JournalEnergy and Environmental Science
Volume14
Issue number4
DOIs
Publication statusPublished - Apr 2021

ASJC Scopus subject areas

  • Environmental Chemistry
  • Renewable Energy, Sustainability and the Environment
  • Nuclear Energy and Engineering
  • Pollution

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