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Exploring dopant effects in stannic oxide nanoparticles for CO2 electro-reduction to formate

Author

Listed:
  • Young-Jin Ko

    (Korea Institute of Science and Technology (KIST))

  • Jun-Yong Kim

    (Korea Institute of Science and Technology (KIST)
    Korea University)

  • Woong Hee Lee

    (Korea Institute of Science and Technology (KIST))

  • Min Gyu Kim

    (Pohang Accelerator Laboratory (PAL))

  • Tae-Yeon Seong

    (Korea University)

  • Jongkil Park

    (Korea Institute of Science and Technology (KIST))

  • YeonJoo Jeong

    (Korea Institute of Science and Technology (KIST))

  • Byoung Koun Min

    (Korea Institute of Science and Technology (KIST)
    Korea University)

  • Wook-Seong Lee

    (Korea Institute of Science and Technology (KIST))

  • Dong Ki Lee

    (Korea Institute of Science and Technology (KIST)
    Korea University
    Korea University of Science and Technology)

  • Hyung-Suk Oh

    (Korea Institute of Science and Technology (KIST)
    Korea University of Science and Technology
    Sungkyunkwan University)

Abstract

The electrosynthesis of formate from CO2 can mitigate environmental issues while providing an economically valuable product. Although stannic oxide is a good catalytic material for formate production, a metallic phase is formed under high reduction overpotentials, reducing its activity. Here, using a fluorine-doped tin oxide catalyst, a high Faradaic efficiency for formate (95% at 100 mA cm−2) and a maximum partial current density of 330 mA cm−2 (at 400 mA cm−2) is achieved for the electroreduction of CO2. Furthermore, the formate selectivity (≈90%) is nearly constant over 7 days of operation at a current density of 100 mA cm−2. In-situ/operando spectroscopies reveal that the fluorine dopant plays a critical role in maintaining the high oxidation state of Sn, leading to enhanced durability at high current densities. First-principle calculation also suggests that the fluorine-doped tin oxide surface could provide a thermodynamically stable environment to form HCOO* intermediate than tin oxide surface. These findings suggest a simple and efficient approach for designing active and durable electrocatalysts for the electrosynthesis of formate from CO2.

Suggested Citation

  • Young-Jin Ko & Jun-Yong Kim & Woong Hee Lee & Min Gyu Kim & Tae-Yeon Seong & Jongkil Park & YeonJoo Jeong & Byoung Koun Min & Wook-Seong Lee & Dong Ki Lee & Hyung-Suk Oh, 2022. "Exploring dopant effects in stannic oxide nanoparticles for CO2 electro-reduction to formate," Nature Communications, Nature, vol. 13(1), pages 1-9, December.
  • Handle: RePEc:nat:natcom:v:13:y:2022:i:1:d:10.1038_s41467-022-29783-7
    DOI: 10.1038/s41467-022-29783-7
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    References listed on IDEAS

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    1. Na Han & Yu Wang & Hui Yang & Jun Deng & Jinghua Wu & Yafei Li & Yanguang Li, 2018. "Ultrathin bismuth nanosheets from in situ topotactic transformation for selective electrocatalytic CO2 reduction to formate," Nature Communications, Nature, vol. 9(1), pages 1-8, December.
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    2. Cong Liu & Bingbao Mei & Zhaoping Shi & Zheng Jiang & Junjie Ge & Wei Xing & Ping Song & Weilin Xu, 2024. "Operando formation of highly efficient electrocatalysts induced by heteroatom leaching," Nature Communications, Nature, vol. 15(1), pages 1-9, December.
    3. Subhabrata Mukhopadhyay & Muhammad Saad Naeem & G. Shiva Shanker & Arnab Ghatak & Alagar R. Kottaichamy & Ran Shimoni & Liat Avram & Itamar Liberman & Rotem Balilty & Raya Ifraemov & Illya Rozenberg &, 2024. "Local CO2 reservoir layer promotes rapid and selective electrochemical CO2 reduction," Nature Communications, Nature, vol. 15(1), pages 1-14, December.

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