Journal of Inorganic Materials ›› 2023, Vol. 38 ›› Issue (1): 71-78.DOI: 10.15541/jim20220298

• RESEARCH ARTICLE • Previous Articles     Next Articles

In-situ Loaded Pt-Co High Index Facets Catalysts: Preparation and Electrocatalytic Performance

YAO Yishuai1,2,3(), GUO Ruihua1,2,3(), AN Shengli1,2,3, ZHANG Jieyu4, CHOU Kuochih4, ZHANG Guofang1, HUANG Yarong1, PAN Gaofei1   

  1. 1. School of Material and Metallurgy, Inner Mongolia University of Science & Technology, Baotou 014010, China
    2. Inner Mongolia Key Laboratory of Advanced Ceramic Materials and Devices, Inner Mongolia University of Science & Technology, Baotou 014010, China
    3. Key Laboratory of Green Extraction & Efficient Utilization of Light Rare-Earth Resources, Ministry of Education, Inner Mongolia University of Science & Technology, Baotou 014010, China
    4. College of Materials Science and Engineering, Shanghai University, Shanghai 200072, China
  • Received:2022-05-27 Revised:2022-08-01 Published:2022-08-24 Online:2022-08-26
  • Contact: GUO Ruihua, professor. E-mail:
  • About author:YAO Yishuai(1996-), male, Master candidate. E-mail:
  • Supported by:
    National Natural Science Foundation of China(51864040);National Natural Science Foundation of China(51962028);Inner Mongolia Autonomous Region Science and Technology Program(2021GG0042);Inner Mongolia Autonomous Region Youth Science and Technology Excellence in Higher Education(NJYT22064);Inner Mongolia Autonomous Region Natural Science Foundation Program(2022MS05018)


Direct ethanol fuel cell (DEFC) has been widely studied because of its advantages of easy fuel availability, green and high effiency. However, DEFC catalysts are still frustrated with low catalytic efficiency and poor catalyst stability, which restrict its rapid development. In this work, XC-72R carbon black-loaded Pt1Cox/C high-index crystalline nanocatalysts were prepared in one step by liquid-phase hydrothermal synthesis, using polyvinylpyrrolidone (PVP k-25) as dispersant and reducing agent, glycine as surface control agent and co-reducing agent, and modulating the molar ratio of Pt-Co metal precursors to achieve the in-situ growth of catalyst particles on carbon carriers. The exposed high index crystalline facets of the Pt1Co1/3/C nanocatalyst mainly consisted of (410), (510) and (610) crystalline facets. The growth pattern of the Pt1Co1/3/C nanocatalyst grains varied from 'sphere-like' to cubic, and eventually to concave with high index grain orientation. The Pt1Co1/3/C nanocatalyst with high index crystalline surface has the highest electrocatalytic activity with an electrochemically active surface area of 18.46 m2/g, a current density of 48.70 mA/cm2 for the ethanol oxidation peak, a steady state current density of 8.29 mA/cm2 and a potential of 0.610 V for the CO oxidation peak. This indicates that the defect atoms such as steps and kinks on the surface of the catalyst with high index crystal plane can increase the active sites, thus showing excellent electrocatalytic performance. This study may provide a theoretical basis for the development and industrial application of high index crystalline catalyst materials.

Key words: hydrothermal method, Pt-Co catalyst, high index crystal plane, in-situ growth, direct ethanol fuel cell

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