Nano-Micro Letters (Jun 2023)

PtNi-W/C with Atomically Dispersed Tungsten Sites Toward Boosted ORR in Proton Exchange Membrane Fuel Cell Devices

  • Huawei Wang,
  • Jialong Gao,
  • Changli Chen,
  • Wei Zhao,
  • Zihou Zhang,
  • Dong Li,
  • Ying Chen,
  • Chenyue Wang,
  • Cheng Zhu,
  • Xiaoxing Ke,
  • Jiajing Pei,
  • Juncai Dong,
  • Qi Chen,
  • Haibo Jin,
  • Maorong Chai,
  • Yujing Li

DOI
https://doi.org/10.1007/s40820-023-01102-9
Journal volume & issue
Vol. 15, no. 1
pp. 1 – 19

Abstract

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Highlights A hybrid electrocatalyst consisting of PtNi-W alloy nanocrystals loaded on carbon surface with atomically dispersed W sites was realized. Single-atomic W formed protonic acid sites and established an extended proton transport network at the catalyst surface. Peak power density is enhanced by 64.4% compared to that with the commercial Pt/C catalyst in fuel cell as cathode at ultra-low loading of 0.05 mgPt cm−2.

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