Applied Catalysis2022，Vol.3039.DOI:10.1016/j.apcatb.2021.120918

Trace doping of early transition metal enabled efficient and durable oxygen reduction catalysis on Pt-based ultrathin nanowires

Gao, Lei Sun, Tulai Tan, Xin Liu, Maochang Xue, Fei Wang, Bin Zhang, Jiawei Lu, Yang-Fan Ma, Chao Tian, He Yang, Shengchun Smith, Sean C. Huang, Hongwen
Applied Catalysis2022，Vol.3039.DOI:10.1016/j.apcatb.2021.120918
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  • NSTL
  • Elsevier

Trace doping of early transition metal enabled efficient and durable oxygen reduction catalysis on Pt-based ultrathin nanowires

Gao, Lei 1Sun, Tulai 2Tan, Xin 3Liu, Maochang 4Xue, Fei 4Wang, Bin 4Zhang, Jiawei 1Lu, Yang-Fan 5Ma, Chao 1Tian, He 5Yang, Shengchun 4Smith, Sean C. 3Huang, Hongwen1
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作者信息

  • 1. Hunan Univ
  • 2. Zhejiang Univ Technol
  • 3. Australian Natl Univ
  • 4. Xi An Jiao Tong Univ
  • 5. Zhejiang Univ
  • 折叠

Abstract

Discovering an active and durable catalyst for oxygen reduction reaction is crucial to the commercialization of fuel cells, but remains grand challenging. Here we report, for the first time, the trace doping of early transition metal (ETM) Re into ultrathin PtNiGa nanowires (Re-PtNiGa NWs) to construct a novel catalyst integrating the superior activity, long-time durability, and high utilization efficiency of Pt atoms. Impressively, the Re-PtNiGa tetrametallic NWs present a 19.6-fold enhancement in mass activity (3.49 A mg(Pt)(-1)) compared to commercial Pt/C catalyst and only a 10.6% loss in mass activity after 20,000 cycles of durability test. Moreover, the real fuel cell assembled by Re-PtNiGa NWs on the cathode strongly supports its great potential in fuel cells. The density functional theory calculations reveal that introduction of ETM Re into PtNiGa NWs could weaken binding strength of oxygenated species and elevate dissolution potential, well rationalizing the great enhancements in activity and durability.

Key words

Ultrathin Re-PtNiGa nanowires/Doping of early transition metal/Multicomponent alloy/Electrocatalyst/Oxygen reduction reaction/ELECTROCATALYSTS/PLATINUM/SURFACE/NANOPARTICLES/CONVERSION/NANOCAGES

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出版年

2022
Applied Catalysis

Applied Catalysis

ISSN：0926-3373
被引量23
参考文献量54
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