Lin Zeheng, Han Chen, O'Connell George E P, Lu Xunyu
Particles and Catalysis Research Group, School of Chemical Engineering, The University of New South Wales, Sydney, NSW 2052, Australia.
Angew Chem Int Ed Engl. 2023 Sep 18;62(38):e202301435. doi: 10.1002/anie.202301435. Epub 2023 Jun 20.
CO reduction, two-electron O reduction, and N reduction are sustainable technologies to valorise common molecules. Their further development requires working electrode design to promote the multistep electrochemical processes from gas reactants to value-added products at the device level. This review proposes critical features of a desirable electrode based on the fundamental electrochemical processes and the development of scalable devices. A detailed discussion is made to approach such a desirable electrode, addressing the recent progress on critical electrode components, assembly strategies, and reaction interface engineering. Further, we highlight the electrode design tailored to reaction properties (e.g., its thermodynamics and kinetics) for performance optimisation. Finally, the opportunities and remaining challenges are presented, providing a framework for rational electrode design to push these gas reduction reactions towards an improved technology readiness level (TRL).
一氧化碳还原、双电子氧还原和氮还原是使常见分子增值的可持续技术。它们的进一步发展需要在器件层面设计工作电极，以促进从气体反应物到增值产品的多步电化学过程。本综述基于基本电化学过程和可扩展器件的发展，提出了理想电极的关键特性。针对如何实现这样一个理想电极进行了详细讨论，阐述了关键电极组件、组装策略和反应界面工程方面的最新进展。此外，我们强调了根据反应特性（如热力学和动力学）定制电极设计以优化性能。最后，介绍了机遇和尚存的挑战，为合理的电极设计提供了一个框架，以推动这些气体还原反应达到更高的技术就绪水平（TRL）。
