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Materializing efficient methanol oxidation via electron delocalization in nickel hydroxide nanoribbon

Author

Listed:
  • Xiaopeng Wang

    (National University of Singapore)

  • Shibo Xi

    (Agency for Science, Technology and Research)

  • Wee Siang Vincent Lee

    (National University of Singapore)

  • Pengru Huang

    (National University of Singapore
    Guangxi Key Laboratory of Information Materials, School of Material Science and Engineering, Guilin University of Electronic Technology)

  • Peng Cui

    (Jiangsu Normal University)

  • Lei Zhao

    (Harbin Institute of Technology)

  • Weichang Hao

    (Beihang University)

  • Xinsheng Zhao

    (Jiangsu Normal University)

  • Zhenbo Wang

    (Harbin Institute of Technology)

  • Haijun Wu

    (National University of Singapore)

  • Hao Wang

    (National University of Singapore)

  • Caozheng Diao

    (National University of Singapore)

  • Armando Borgna

    (Agency for Science, Technology and Research)

  • Yonghua Du

    (Brookhaven National Laboratory)

  • Zhi Gen Yu

    (Agency for Science, Technology and Research)

  • Stephen Pennycook

    (National University of Singapore)

  • Junmin Xue

    (National University of Singapore)

Abstract

Achieving a functional and durable non-platinum group metal-based methanol oxidation catalyst is critical for a cost-effective direct methanol fuel cell. While Ni(OH)2 has been widely studied as methanol oxidation catalyst, the initial process of oxidizing Ni(OH)2 to NiOOH requires a high potential of 1.35 V vs. RHE. Such potential would be impractical since the theoretical potential of the cathodic oxygen reduction reaction is at 1.23 V. Here we show that a four-coordinated nickel atom is able to form charge-transfer orbitals through delocalization of electrons near the Fermi energy level. As such, our previously reported periodically arranged four-six-coordinated nickel hydroxide nanoribbon structure (NR-Ni(OH)2) is able to show remarkable methanol oxidation activity with an onset potential of 0.55 V vs. RHE and suggests the operability in direct methanol fuel cell configuration. Thus, this strategy offers a gateway towards the development of high performance and durable non-platinum direct methanol fuel cell.

Suggested Citation

  • Xiaopeng Wang & Shibo Xi & Wee Siang Vincent Lee & Pengru Huang & Peng Cui & Lei Zhao & Weichang Hao & Xinsheng Zhao & Zhenbo Wang & Haijun Wu & Hao Wang & Caozheng Diao & Armando Borgna & Yonghua Du , 2020. "Materializing efficient methanol oxidation via electron delocalization in nickel hydroxide nanoribbon," Nature Communications, Nature, vol. 11(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:11:y:2020:i:1:d:10.1038_s41467-020-18459-9
    DOI: 10.1038/s41467-020-18459-9
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    Cited by:

    1. Shanlin Li & Ruguang Ma & Jingcong Hu & Zichuang Li & Lijia Liu & Xunlu Wang & Yue Lu & George E. Sterbinsky & Shuhu Liu & Lei Zheng & Jie Liu & Danmin Liu & Jiacheng Wang, 2022. "Coordination environment tuning of nickel sites by oxyanions to optimize methanol electro-oxidation activity," Nature Communications, Nature, vol. 13(1), pages 1-11, December.
    2. Botao Zhu & Bo Dong & Feng Wang & Qifeng Yang & Yunpeng He & Cunjin Zhang & Peng Jin & Lai Feng, 2023. "Unraveling a bifunctional mechanism for methanol-to-formate electro-oxidation on nickel-based hydroxides," Nature Communications, Nature, vol. 14(1), pages 1-9, December.

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