Ruan Jiufeng, Chen Yaping, Zhao Guoqiang, Li Peng, Zhang Bingxing, Jiang Yinzhu, Ma Tianyi, Pan Hongge, Dou Shi Xue, Sun Wenping
School of Materials Science and Engineering, State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou, 310027, P. R. China.
Institute for Superconducting and Electronic Materials, Australian Institute for Innovative Materials, University of Wollongong, Wollongong, NSW, 2522, Australia.
Small. 2022 Oct;18(43):e2107067. doi: 10.1002/smll.202107067. Epub 2022 May 1.
Developing efficient platinum (Pt)-based electrocatalysts with high tolerance to CO poisoning for the methanol oxidation reaction is critical for the development of direct methanol fuel cells. In this work, cobalt single atoms are introduced to enhance the electrocatalytic performance of N-doped carbon supported Pt (N-C/Pt) for the methanol oxidation reaction. The cobalt single atoms are believed to play a critical role in accelerating the prompt oxidation of CO to CO and minimizing the CO blocking of the adjacent Pt active sites. Benefitting from the synergistic effects among the Co single atoms, the Pt nanoparticles, and the N-doped carbon support, the Co-modified N-C/Pt (Co-N-C/Pt) electrocatalyst simultaneously delivers impressive electrocatalytic activity and durability with lower onset potential and superb CO poisoning resistance as compared to the N-C/Pt and the commercial Pt/C electrocatalysts.
开发对甲醇氧化反应具有高抗CO中毒能力的高效铂基电催化剂对于直接甲醇燃料电池的发展至关重要。在这项工作中，引入钴单原子以增强氮掺杂碳负载的铂（N-C/Pt）对甲醇氧化反应的电催化性能。钴单原子被认为在加速CO迅速氧化为CO₂以及最小化相邻铂活性位点的CO阻塞方面起着关键作用。受益于钴单原子、铂纳米颗粒和氮掺杂碳载体之间的协同效应，与N-C/Pt和商业Pt/C电催化剂相比，钴改性的N-C/Pt（Co-N-C/Pt）电催化剂同时具有令人印象深刻的电催化活性和耐久性，具有更低的起始电位和出色的抗CO中毒性能。
