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Science China Materials

, Volume 60, Issue 11, pp 1121–1128 | Cite as

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

  • 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)
Articles

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 Pt −1 at an overpotential of 50 mV, which was approximately 28 times higher than that of the commercial Pt/C (0.223 A mg Pt −1 ) at the same overpotential, proving the high-efficiency electrocatalytic activity of the as-obtained Ptc/Ni(OH)2 for HER under alkaline conditions.

Keywords

atomic-scale platinum Ni(OH)2 clusters 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

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.

Notes

Acknowledgments

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

Supplementary material

40843_2017_9035_MOESM1_ESM.pdf (2.6 mb)
Atomic-scale Pt clusters decorated on porous α-Ni(OH)2 nanowires as highly efficient electrocatalyst for hydrogen evolution reaction

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Copyright information

© Science China Press and Springer-Verlag Berlin Heidelberg 2017

Authors and Affiliations

  • Hongchao Yang (杨红超)
    • 1
    • 2
  • Changhong Wang (汪昌红)
    • 1
    • 2
  • Feng Hu (胡峰)
    • 2
  • Yejun Zhang (张叶俊)
    • 2
  • Huan Lu (卢欢)
    • 2
  • Qiangbin Wang (王强斌)
    • 1
    • 2
    • 3
  1. 1.School of Nano Technology and Nano BionicsUniversity of Science and Technology of ChinaSuzhouChina
  2. 2.Key Laboratory of Nano-Bio Interface, Division of Nanobiomedicine and i-Lab, Suzhou Institute of Nano-Tech and Nano-BionicsChinese Academy of SciencesSuzhouChina
  3. 3.College of Materials Sciences and Opto-Electronic TechnologyUniversity of Chinese Academy of SciencesBeijingChina

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