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Research Article

Effects of CeO2 pre-calcined at different temperatures on the performance of Pt/CeO2-C electrocatalyst for MOR

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  • Received: 25 March 2020Revised: 19 April 2020Accepted: 21 April 2020Available online: 24 April 2020
  • Pt/CeO2-C catalysts with CeO2 pre-calcined at 300~600 °C were synthesized by combining hydrothermal calcination and wet impregnation method. The effects of the pre-calcined CeO2 on the performance of Pt/CeO2-C catalysts for methanol oxidation have been investigated. The Pt/CeO2-C catalysts with pre-calcined CeO2 at 300~600 °C have shown an average particle size of 2.6-2.9 nm, and exhibited better methanol electro-oxidation catalysis activity than the commercial Pt/C catalyst. Specifically, the Pt/CeO2-C catalyst with pre-calcined CeO2 at 400 °C displayed the highest electrochemical surface area (ECSA) value at 68.14 m2 g−1Pt and If/Ib ratio at 1.26, which are far larger than that of the commercial Pt/C catalyst at 53.23 m2 g−1Pt and 0.79 respectively, implying the greatly enhanced CO tolerance performance.
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Effects of CeO2 pre-calcined at different temperatures on the performance of Pt/CeO2-C electrocatalyst for MOR

  • Corresponding authors:

    Shi-you Guan    E-mail: syguan@shu.edu.cn

    Bing Li    E-mail: drlibing@163.com; bingli@ecust.edu.cn

  • 1. School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai 200237, China
  • 2. School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
  • 3. Institute for Sustainable Energy, College of Sciences, Shanghai University, Shanghai 200237, China
  • 4. Department of Energy Conversion and Storage, Technical University of Denmark, Lyngby 2800, Denmark

Abstract: Pt/CeO2-C catalysts with CeO2 pre-calcined at 300~600 °C were synthesized by combining hydrothermal calcination and wet impregnation method. The effects of the pre-calcined CeO2 on the performance of Pt/CeO2-C catalysts for methanol oxidation have been investigated. The Pt/CeO2-C catalysts with pre-calcined CeO2 at 300~600 °C have shown an average particle size of 2.6-2.9 nm, and exhibited better methanol electro-oxidation catalysis activity than the commercial Pt/C catalyst. Specifically, the Pt/CeO2-C catalyst with pre-calcined CeO2 at 400 °C displayed the highest electrochemical surface area (ECSA) value at 68.14 m2 g−1Pt and If/Ib ratio at 1.26, which are far larger than that of the commercial Pt/C catalyst at 53.23 m2 g−1Pt and 0.79 respectively, implying the greatly enhanced CO tolerance performance.

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