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Mechanistic understanding of the electrocatalytic CO2 reduction reaction – New developments based on advanced instrumental techniques
Nano Today ( IF 13.2 ) Pub Date : 2020-04-01 , DOI: 10.1016/j.nantod.2019.100835
Ying Zhang , Si-Xuan Guo , Xiaolong Zhang , Alan M. Bond , Jie Zhang

Abstract Advanced instrumental techniques have played a crucial role in providing experimental evidence of reaction intermediates and kinetic information needed to correlate reactivity and product selectivity with the intrinsic properties of electrocatalysts used in the electrochemical CO2 reduction reaction (eCO2RR). In this review article, new developments in instrumental techniques for the mechanistic study of the eCO2RR under in situ or operando conditions are surveyed. Initially, the reaction pathways for the eCO2RR proposed in the literature are introduced to provide a basic understanding of the eCO2RR mechanisms and also to demonstrate the complexity of this reaction. Next, commonly used theoretical approaches for mechanistic studies of the eCO2RR including electrokinetic studies and theoretical calculation/modelling are outlined. The advantages and limitations associated with these approaches are highlighted to emphasise the importance of undertaking mechanistic studies under in situ or operando conditions using spectroscopic and electrochemical techniques. The main focus of this review is to summarise the research progress and discuss the advantages and limitations associated with each technique. Finally, in the Summary and Future Outlook Section, recommendations on possible future directions for the field are given.

中文翻译:

电催化 CO2 还原反应的机理理解——基于先进仪器技术的新进展

摘要 先进的仪器技术在提供反应中间体的实验证据和将反应性和产物选择性与电化学 CO2 还原反应 (eCO2RR) 中使用的电催化剂的固有特性相关联所需的动力学信息方面发挥了至关重要的作用。在这篇评论文章中,调查了在原位或操作条件下对 eCO2RR 进行机械研究的仪器技术的新发展。最初,介绍了文献中提出的 eCO2RR 的反应途径,以提供对 eCO2RR 机制的基本理解,并证明该反应的复杂性。接下来,概述了用于 eCO2RR 机械研究的常用理论方法,包括电动研究和理论计算/建模。强调了与这些方法相关的优点和局限性,以强调使用光谱和电化学技术在原位或操作条件下进行机械研究的重要性。本综述的主要重点是总结研究进展并讨论与每种技术相关的优点和局限性。最后,在摘要和未来展望部分,就该领域未来可能的方向提出了建议。本综述的主要重点是总结研究进展并讨论与每种技术相关的优点和局限性。最后,在摘要和未来展望部分,就该领域未来可能的方向提出了建议。本综述的主要重点是总结研究进展并讨论与每种技术相关的优点和局限性。最后,在摘要和未来展望部分,就该领域未来可能的方向提出了建议。
更新日期:2020-04-01
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