Operando characterization techniques for electrocatalysis,Energy & Environmental Science

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Operando characterization techniques for electrocatalysis
Energy & Environmental Science ( IF 32.4 ) Pub Date : 2020-08-21 , DOI: 10.1039/d0ee01706j
Jingkun Li _{1,

2,

3,

4,

5} , Jinlong Gong _{1,

2,

3,

4,

5}

Affiliation

The energy crisis and climate change are growing threats to human society. Fuel cells and electrolyzers using solar and wind as energy sources provide a promising carbon-free and sustainable energy future as an alternative to the present fossil fuels. Robust and efficient electrocatalysts constitute the cornerstone for practical applications of fuel cells and electrolyzers. However, their rational design is hindered by the lack of knowledge of the active site structures, the reaction pathways, and the degradation mechanisms. This calls for the operando characterization of the electrode–electrolyte–gas interface of electrocatalytic processes under working conditions. This review describes the understanding of various operando techniques for diverse nano-, molecular and single atom electrocatalysts. We highlight the progress achieved via operando techniques toward the elucidation of the structure–activity relationships of electrocatalysts.

中文翻译：

电催化的操作表征技术

能源危机和气候变化正在对人类社会构成日益严重的威胁。使用太阳能和风能作为能源的燃料电池和电解槽提供了有希望的无碳和可持续能源的未来，作为目前化石燃料的替代品。健壮高效的电催化剂构成了燃料电池和电解槽实际应用的基石。但是，由于缺乏对活性位点结构，反应途径和降解机理的了解，阻碍了它们的合理设计。这要求在工作条件下对电催化过程的电极-电解质-气体界面进行操作表征。这篇评论描述了对各种操作的理解用于多种纳米，分子和单原子电催化剂的技术。我们强调通过操作技术在阐明电催化剂的结构-活性关系方面取得的进展。

更新日期：2020-08-21

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