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Atomic-scale Pt clusters decorated on porous α-Ni(OH)2 nanowires as highly efficient electrocatalyst for hydrogen evolution reaction

原子级Pt团簇修饰的α相氢氧化镍纳米线作为高效析氢反应催化剂

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Abstract

The synthesis of atomic-scale metal catalysts is a promising but very challenging project. In this work, we successfully fabricated a hybrid catalyst of Ptc/Ni(OH)2 with atomic-scale Pt clusters uniformly decorated on porous Ni(OH)2 nanowires (NWs) via a facile room-temperature synthesis strategy. The as-obtained Ptc/Ni(OH)2 catalyst exhibits highly efficient hydrogen evolution reaction (HER) performance under basic conditions. In 0.1 mol L−1 KOH, the Ptc/Ni(OH)2 has an onset overpotential of ~0 mV vs. RHE, and a significantly low overpotential of 32 mV at a current density of 10 mA cm−2, lower than that of the commercial 20% Pt/C (58 mV). The mass current density data illustrated that the Ptc/Ni(OH)2 reached a high current density of 6.34 Amg −1Pt at an overpotential of 50 mV, which was approximately 28 times higher than that of the commercial Pt/C (0.223 A mg −1Pt ) at the same overpotential, proving the high-efficiency electrocatalytic activity of the as-obtained Ptc/Ni(OH)2 for HER under alkaline conditions.

摘要

合成原子级别的催化剂是一项颇具前景但又充满挑战的课题. 本文通过简单的室温反应成功制备了一种原子级别的Pt团簇修饰 的多孔α相氢氧化镍纳米线(Ptc/Ni(OH)2)复合材料. 所得到的Ptc/Ni(OH)2在碱性环境下表现出高效的电催化析氢反应性能. 在氢气饱和 的0.1 mol L−1氢氧化钾溶液中, Ptc/Ni(OH)2的起始过电势很小, 接近于0, 当电流密度为10 mA cm−2时, 其过电势低至32 mV. 此过电位低于同等 条件下商业化20% Pt/C的过电势(58 mV). 通过质量电流密度数据显示, 在过电势为50 mV时, Ptc/Ni(OH)2的质量电流密度高达6.34 A mg, Pt 1 在 同样的过电势条件下, 这一电流是商业化Pt/C (0.223 A mg ) Pt 1 的28倍, 表明我们所制得的Ptc/Ni(OH)2在碱性环境下具有高效的电催化析氢反 应性能.

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Acknowledgments

The authors thank the financial support from the National Natural Science Foundation of China (21425103, 21673280 and 11374039).

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Authors and Affiliations

  1. School of Nano Technology and Nano Bionics, University of Science and Technology of China, Suzhou, 215123, China

    Hongchao Yang  (杨红超), Changhong Wang  (汪昌红) & Qiangbin Wang  (王强斌)

  2. Key Laboratory of Nano-Bio Interface, Division of Nanobiomedicine and i-Lab, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou, 215123, China

    Hongchao Yang  (杨红超), Changhong Wang  (汪昌红), Feng Hu  (胡峰), Yejun Zhang  (张叶俊), Huan Lu  (卢欢) & Qiangbin Wang  (王强斌)

  3. College of Materials Sciences and Opto-Electronic Technology, University of Chinese Academy of Sciences, Beijing, 100049, China

    Qiangbin Wang  (王强斌)

Authors
  1. Hongchao Yang  (杨红超)
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  2. Changhong Wang  (汪昌红)
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  3. Feng Hu  (胡峰)
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  4. Yejun Zhang  (张叶俊)
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  5. Huan Lu  (卢欢)
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  6. Qiangbin Wang  (王强斌)
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Corresponding author

Correspondence to Qiangbin Wang  (王强斌).

Additional information

Hongchao Yang is now a PhD candidate from Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese academy of sciences. His current research is focused on the electrocatalysis for hydrogen evolution and oxygen reduction reaction.

Qiangbin Wang is the Director for the Key Laboratory of Nano-Bio Interface, Chinese Academy of Sciences and Professor of Physical Chemistry at Suzhou Institute of Nano-tech Nano-bionics, Chinese Academy of Sciences. His research interest mainly concentrates on the controlled synthesis and self-assembly of inorganic nanocrystals and their applications in optoelectronics, catalysis and biomedicine.

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40843_2017_9035_MOESM1_ESM.pdf

Atomic-scale Pt clusters decorated on porous α-Ni(OH)2 nanowires as highly efficient electrocatalyst for hydrogen evolution reaction

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Yang, H., Wang, C., Hu, F. et al. Atomic-scale Pt clusters decorated on porous α-Ni(OH)2 nanowires as highly efficient electrocatalyst for hydrogen evolution reaction. Sci. China Mater. 60, 1121–1128 (2017). https://doi.org/10.1007/s40843-017-9035-8

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  • DOI: https://doi.org/10.1007/s40843-017-9035-8

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