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<p>The oxygen evolution reaction (OER) has become the barrier of the development and application of next-generation sustainable energy systems due to its extremely sluggish reaction kinetics. One of the fundamental challenges is to develop cost-effective and high-efficiency electrocatalysts. Elucidating the dynamic structure evolution of catalysts at electrode-electrolyte interfaces during the reaction is of vital importance for understanding how to activate and sustain electrocatalytic performance. To this end, <i>in situ</i> techniques are invaluable for identifying the active centers together with monitoring the key intermediates under operating conditions. In this review, the latest advances on several cutting-edge <i>in situ</i> methods for characterizing the structure evolution process of OER electrocatalysts are comprehensively summarized. Significantly, a brief overview of active motifs and robust structures during electrocatalysis is provided using multiple <i>in situ</i> correlative techniques, which will contribute to establishing the essential structure-performance relationships and updating the understanding of electrocatalytic mechanisms at unprecedented atomic-scale levels under realistic working conditions. Finally, key challenges and perspectives in this emerging field are highlighted for promoting the design of promising electrocatalysts towards efficient oxygen-associated electrocatalysis and electrosynthesis.</p>

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Identifying the surface dynamic evolution of electrocatalysts during oxygen evolution reaction by in situ techniques

  • 期刊论文

  • 发表日期：

    2026年1月4日

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  • Xiuxiu Zhang,
  • Jing Zhang,
  • Qizheng An,
  • Xinyu Liu,
  • Chengrang Leng,
  • Shuowen Bo,
  • Qinghua Liu,
  • Weiren Cheng

摘要

The oxygen evolution reaction (OER) has become the barrier of the development and application of next-generation sustainable energy systems due to its extremely sluggish reaction kinetics. One of the fundamental challenges is to develop cost-effective and high-efficiency electrocatalysts. Elucidating the dynamic structure evolution of catalysts at electrode-electrolyte interfaces during the reaction is of vital importance for understanding how to activate and sustain electrocatalytic performance. To this end, in situ techniques are invaluable for identifying the active centers together with monitoring the key intermediates under operating conditions. In this review, the latest advances on several cutting-edge in situ methods for characterizing the structure evolution process of OER electrocatalysts are comprehensively summarized. Significantly, a brief overview of active motifs and robust structures during electrocatalysis is provided using multiple in situ correlative techniques, which will contribute to establishing the essential structure-performance relationships and updating the understanding of electrocatalytic mechanisms at unprecedented atomic-scale levels under realistic working conditions. Finally, key challenges and perspectives in this emerging field are highlighted for promoting the design of promising electrocatalysts towards efficient oxygen-associated electrocatalysis and electrosynthesis.