DOI: 10.1126/science.aaa8765 ISSN:
High-performance transition metal–doped Pt 3 Ni octahedra for oxygen reduction reaction
Xiaoqing Huang, Zipeng Zhao, Liang Cao, Yu Chen, Enbo Zhu, Zhaoyang Lin, Mufan Li, Aiming Yan, Alex Zettl, Y. Morris Wang, Xiangfeng Duan, Tim Mueller, Yu Huang- Multidisciplinary
Molybdenum doping drives high activity
Platinum (Pt) is an effective catalyst of the oxygen reduction reaction in fuel cells but is scarce. One approach to extend Pt availability is to alloy it with more abundant metals such as nickel (Ni). Although these catalysts can be highly active, they are often not durable because of Ni loss. Huang et al. show that doping the surface of octahedral Pt 3 Ni nanocrystals with molybdenum not only leads to high activity (∼80 times that of a commercial catalyst) but enhances their stability.
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