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Small molecule-assisted synthesis of carbon supported platinum intermetallic fuel cell catalysts

Author

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  • Tian-Wei Song

    (University of Science and Technology of China)

  • Cong Xu

    (University of Science and Technology of China)

  • Zhu-Tao Sheng

    (Anhui Normal University)

  • Hui-Kun Yan

    (University of Science and Technology of China)

  • Lei Tong

    (University of Science and Technology of China)

  • Jun Liu

    (Hefei Institutes of Physical Science, Chinese Academy of Sciences
    Anhui Contango New Energy Technology Co., Ltd)

  • Wei-Jie Zeng

    (University of Science and Technology of China)

  • Lu-Jie Zuo

    (University of Science and Technology of China)

  • Peng Yin

    (University of Science and Technology of China)

  • Ming Zuo

    (University of Science and Technology of China)

  • Sheng-Qi Chu

    (Chinese Academy of Sciences)

  • Ping Chen

    (Anhui University)

  • Hai-Wei Liang

    (University of Science and Technology of China)

Abstract

Supported ordered intermetallic compounds exhibit superior catalytic performance over their disordered alloy counterparts in diverse reactions. But the synthesis of intermetallic compounds catalysts often requires high-temperature annealing that leads to the sintering of metals into larger crystallites. Herein, we report a small molecule-assisted impregnation approach to realize the general synthesis of a family of intermetallic catalysts, consisting of 18 binary platinum intermetallic compounds supported on carbon blacks. The molecular additives containing heteroatoms (that is, O, N, or S) can be coordinated with platinum in impregnation and thermally converted into heteroatom-doped graphene layers in high-temperature annealing, which significantly suppress alloy sintering and insure the formation of small-sized intermetallic catalysts. The prepared optimal PtCo intermetallics as cathodic oxygen-reduction catalysts exhibit a high mass activity of 1.08 A mgPt–1 at 0.9 V in H2-O2 fuel cells and a rated power density of 1.17 W cm–2 in H2-air fuel cells.

Suggested Citation

  • Tian-Wei Song & Cong Xu & Zhu-Tao Sheng & Hui-Kun Yan & Lei Tong & Jun Liu & Wei-Jie Zeng & Lu-Jie Zuo & Peng Yin & Ming Zuo & Sheng-Qi Chu & Ping Chen & Hai-Wei Liang, 2022. "Small molecule-assisted synthesis of carbon supported platinum intermetallic fuel cell catalysts," Nature Communications, Nature, vol. 13(1), pages 1-11, December.
    • Handle: RePEc:nat:natcom:v:13:y:2022:i:1:d:10.1038_s41467-022-34037-7
    DOI: 10.1038/s41467-022-34037-7
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    References listed on IDEAS

    as
    1. Yuki Nakaya & Jun Hirayama & Seiji Yamazoe & Ken-ichi Shimizu & Shinya Furukawa, 2020. "Single-atom Pt in intermetallics as an ultrastable and selective catalyst for propane dehydrogenation," Nature Communications, Nature, vol. 11(1), pages 1-7, December.
    2. Peng Yin & Sulei Hu & Kun Qian & Zeyue Wei & Le-Le Zhang & Yue Lin & Weixin Huang & Haifeng Xiong & Wei-Xue Li & Hai-Wei Liang, 2021. "Quantification of critical particle distance for mitigating catalyst sintering," Nature Communications, Nature, vol. 12(1), pages 1-10, December.
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