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Single atom tungsten doped ultrathin α-Ni(OH)2 for enhanced electrocatalytic water oxidation

Author

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  • Junqing Yan

    (Shaanxi Normal University)

  • Lingqiao Kong

    (Shaanxi Normal University)

  • Yujin Ji

    (Soochow University)

  • Jai White

    (University of Newcastle)

  • Youyong Li

    (Soochow University)

  • Jing Zhang

    (Chinese Academy of Sciences)

  • Pengfei An

    (Chinese Academy of Sciences)

  • Shengzhong Liu

    (Shaanxi Normal University
    Dalian National Laboratory for Clean Energy, Chinese Academy of Sciences)

  • Shuit-Tong Lee

    (Soochow University)

  • Tianyi Ma

    (University of Newcastle)

Abstract

Electrocatalytic water oxidation is a rate-determining step in the water splitting reaction. Here, we report one single atom W6+ doped Ni(OH)2 nanosheet sample (w-Ni(OH)2) with an outstanding oxygen evolution reaction (OER) performance that is, in a 1 M KOH medium, an overpotential of 237 mV is obtained reaching a current density of 10 mA/cm2. Moreover, at high current density of 80 mA/cm2, the overpotential value is 267 mV. The corresponding Tafel slope is measured to be 33 mV/dec. The d0 W6+ atom with a low spin-state has more outermost vacant orbitals, resulting in more water and OH− groups being adsorbed on the exposed W sites of the Ni(OH)2 nanosheet. Density functional theory (DFT) calculations confirm that the O radical and O-O coupling are both generated at the same site of W6+. This work demonstrates that W6+ doping can promote the electrocatalytic water oxidation activity of Ni(OH)2 with the highest performance.

Suggested Citation

  • Junqing Yan & Lingqiao Kong & Yujin Ji & Jai White & Youyong Li & Jing Zhang & Pengfei An & Shengzhong Liu & Shuit-Tong Lee & Tianyi Ma, 2019. "Single atom tungsten doped ultrathin α-Ni(OH)2 for enhanced electrocatalytic water oxidation," Nature Communications, Nature, vol. 10(1), pages 1-10, December.
    • Handle: RePEc:nat:natcom:v:10:y:2019:i:1:d:10.1038_s41467-019-09845-z
    DOI: 10.1038/s41467-019-09845-z
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    1. Hasan, Md. Mahedi & Islam, Tamanna & Ratan, Zubair Ahmed & Shaikh, M. Nasiruzzaman & Karim, Mohammad Rezaul & Rahman, Mohammad Mominur & Alharbi, Hamad F. & Uddin, Jamal & Aziz, Md. Abdul & Ahammad, A, 2021. "Ni and Co oxide water oxidation electrocatalysts: Effect of thermal treatment on catalytic activity and surface morphology," Renewable and Sustainable Energy Reviews, Elsevier, vol. 145(C).
    2. Zhe Chen & Jili Li & Lingshen Meng & Jianan Li & Yaming Hao & Tao Jiang & Xuejing Yang & Yefei Li & Zhi-Pan Liu & Ming Gong, 2023. "Ligand vacancy channels in pillared inorganic-organic hybrids for electrocatalytic organic oxidation with enzyme-like activities," Nature Communications, Nature, vol. 14(1), pages 1-11, December.
    3. Zhigang Chen & Yafeng Xu & Ding Ding & Ge Song & Xingxing Gan & Hao Li & Wei Wei & Jian Chen & Zhiyun Li & Zhongmiao Gong & Xiaoming Dong & Chengfeng Zhu & Nana Yang & Jingyuan Ma & Rui Gao & Dan Luo , 2022. "Thermal migration towards constructing W-W dual-sites for boosted alkaline hydrogen evolution reaction," Nature Communications, Nature, vol. 13(1), pages 1-12, December.
    4. López-Fernández, E. & Gómez-Sacedón, C. & Gil-Rostra, J. & Espinós, J.P. & Brey, J. Javier & González-Elipe, A.R. & de Lucas-Consuegra, A. & Yubero, F., 2022. "Optimization of anion exchange membrane water electrolyzers using ionomer-free electrodes," Renewable Energy, Elsevier, vol. 197(C), pages 1183-1191.
    5. Jiayi Chen & Mohammed Aliasgar & Fernando Buendia Zamudio & Tianyu Zhang & Yilin Zhao & Xu Lian & Lan Wen & Haozhou Yang & Wenping Sun & Sergey M. Kozlov & Wei Chen & Lei Wang, 2023. "Diversity of platinum-sites at platinum/fullerene interface accelerates alkaline hydrogen evolution," Nature Communications, Nature, vol. 14(1), pages 1-12, December.
    6. Pengcheng Ye & Keqing Fang & Haiyan Wang & Yahao Wang & Hao Huang & Chenbin Mo & Jiqiang Ning & Yong Hu, 2024. "Lattice oxygen activation and local electric field enhancement by co-doping Fe and F in CoO nanoneedle arrays for industrial electrocatalytic water oxidation," Nature Communications, Nature, vol. 15(1), pages 1-12, December.

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