Yu Jianmin, Su Chenliang, Shang Lu, Zhang Tierui
Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, People's Republic of China.
International Collaborative Laboratory of 2D Materials for Optoelectronic Science and Technology of Ministry of Education, Institute of Microscale Optoelectronics, Shenzhen University, Shen Zhen 518060, People's Republic of China.
ACS Nano. 2023 Oct 24;17(20):19514-19525. doi: 10.1021/acsnano.3c06522. Epub 2023 Oct 9.
Single-atom catalysts (SACs) are regarded as promising non-noble-metal alternatives for the oxygen reduction reaction (ORR) in proton exchange membrane fuel cells due to their high atom utilization efficiency and excellent catalytic properties. However, the insufficient long-term stability issues of SACs under the working conditions seriously hinder their practical application. In this perspective, the recent progress of SACs with optimized ORR catalytic activity is first reviewed. Then, the possible degradation mechanisms of SACs in the ORR process and effective strategies for improving their ORR durability are summarized. Finally, some challenges and opportunities are proposed to develop stable single-atom-based ORR electrocatalysts in the future.
单原子催化剂（SACs）因其高原子利用效率和优异的催化性能，被视为质子交换膜燃料电池中氧还原反应（ORR）有前景的非贵金属替代物。然而，SACs在工作条件下长期稳定性不足的问题严重阻碍了它们的实际应用。从这个角度出发，首先综述了具有优化ORR催化活性的SACs的最新进展。然后，总结了SACs在ORR过程中可能的降解机制以及提高其ORR耐久性的有效策略。最后，提出了未来开发稳定的单原子基ORR电催化剂面临的一些挑战和机遇。
