Jiang Nan, Zhu Zhiwei, Xue Wenjie, Xia Bao Yu, You Bo
Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Wuhan, Hubei, 430074, China.
Department of Chemistry and Biochemistry, University of Nevada, Las Vegas (UNLV), Las Vegas, NV, 89154, USA.
Adv Mater. 2022 Jan;34(2):e2105852. doi: 10.1002/adma.202105852. Epub 2021 Oct 17.
Electrocatalytic CO reduction reaction (CO RR), which produces valuable fuels and chemicals under near-neutral conditions, offers a renewable approach to alleviate the global energy crisis as well as the increasing concerns on climate change. However, to implement this strategy, one of the major challenges, the sluggish kinetics of the paired oxygen evolution reaction (OER) at anode, needs to be surmounted. It is therefore highly desirable to explore high-performance and cost-effective OER electrocatalysts suitable for CO RR conditions, which is very different from those widely investigated under acidic or alkaline conditions. In this review, the ongoing development of OER electrocatalysts under near pH-neutral CO -saturated (bi)carbonate solutions are highlighted and the future opportunities are discussed. It is started with a brief introduction on OER paired with CO RR, the relevant theoretical tools such as density functional theory (DFT) and particularly machine learning (ML), and the operando characterization techniques. Then, there are some detailed discussions of recent progress on the rational design of OER electrocatalysts under CO RR conditions ranging from noble-metal oxides to nonprecious metal phosphides, carbonates, (hydro)oxides, and so on. Finally, a perspective for developing OER electrocatalysts integrated with CO electroreduction is proposed.
电催化一氧化碳还原反应（CO RR）在近中性条件下生产有价值的燃料和化学品，为缓解全球能源危机以及日益增长的气候变化担忧提供了一种可再生方法。然而，要实施这一策略，需要克服一个主要挑战，即阳极上成对析氧反应（OER）的动力学缓慢。因此，非常有必要探索适用于CO RR条件的高性能且经济高效的OER电催化剂，这与在酸性或碱性条件下广泛研究的电催化剂有很大不同。在这篇综述中，重点介绍了在接近pH中性的CO饱和（双）碳酸盐溶液中OER电催化剂的发展现状，并讨论了未来的机遇。首先简要介绍了与CO RR配对的OER、相关的理论工具，如密度泛函理论（DFT），特别是机器学习（ML），以及原位表征技术。然后，详细讨论了在CO RR条件下从贵金属氧化物到非贵金属磷化物、碳酸盐、（氢）氧化物等OER电催化剂合理设计的最新进展。最后，提出了开发与CO电还原集成的OER电催化剂的展望。
