Zhang Hui, Li Yichuan, Zeng Lingyou, Pan Yuan
State Key Lab of Heavy Oil Processing, College of Chemistry and Chemical Engineering, China University of Petroleum (East China), Qingdao, 266580, China.
Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), College of Chemistry, Nankai University, Tianjin, 300071, China.
Small. 2024 Feb;20(8):e2307384. doi: 10.1002/smll.202307384. Epub 2023 Oct 12.
The slow kinetics of cathodic oxygen reduction reactions (ORR) in fuel cells and the high cost of commercial Pt-based catalysts limit their large-scale application. Cu-based single-atom catalysts (SACs) have received increasing attention as a promising ORR catalyst due to their high atom utilization, high thermodynamic activity, adjustable electronic structure, and low cost. Herein, the recent research progress of Cu-based catalysts is reviewed from single atom to polymetallic active sites for ORR. First, the design and synthesis method of Cu-based SACs are summarized. Then the atomic-level structure regulation strategy of Cu-based catalyst is proposed to improve the ORR performance. The different ORR catalytic mechanism based on the different Cu active sites is further revealed. Finally, the design principle of high-performance Cu-based SACs is proposed for ORR and the opportunities and challenges are further prospected.
燃料电池中阴极氧还原反应（ORR）的缓慢动力学以及商业铂基催化剂的高成本限制了它们的大规模应用。铜基单原子催化剂（SACs）因其高原子利用率、高热力学活性、可调节的电子结构和低成本，作为一种有前景的ORR催化剂受到越来越多的关注。在此，综述了铜基催化剂从单原子到多金属活性位点用于ORR的最新研究进展。首先，总结了铜基SACs的设计与合成方法。然后提出了铜基催化剂的原子级结构调控策略以提高ORR性能。进一步揭示了基于不同铜活性位点的不同ORR催化机理。最后，提出了用于ORR的高性能铜基SACs的设计原则，并进一步展望了机遇与挑战。
