High-entropy alloyed single-atom Pt for methanol oxidation electrocatalysis

The methanol oxidation reaction is the bottleneck for direct methanol fuel cells. Unfortunately, the state-of-the-art Pt-based catalysts suffer heavily from the CO poisoning problem. Isolating Pt atoms in a material can avoid CO poisoning. However, single-atom Pt catalysts alone are inert towards methanol oxidation reaction. Here, we report high-entropy alloyed single-atom Pt catalysts, in which single-atom Pt sites are alloyed with non-noble elements in a high-entropy structure. This catalyst not only possesses active Pt sites but also inherits the ability of single-atom Pt to resist CO poisoning. Consequently, the catalyst shows a notable mass activity of 35.3 A mg−1 at only 2.3 at% Pt and maintains high…

• NN
  National Natural Science Foundation of China

  Awards: 52388201, 12274254, 52272041, 2021YFA1400100
• NU
  Nanjing University of Aeronautics and Astronautics
• NU
  Nanjing University
• SF
  Shenzhen Fundamental Research Program

  Awards: JCYJ20200109142816479, WDZC20200819115243002
• GP
  Guangdong Provincial Pearl River Talents Program

  Award: 2017BT01N111