Surface-Engineered PtNi-O Nanostructure with Record-High Performance for Electrocatalytic Hydrogen Evolution Reaction,Journal of the American Chemical Society

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Surface-Engineered PtNi-O Nanostructure with Record-High Performance for Electrocatalytic Hydrogen Evolution Reaction
Journal of the American Chemical Society ( IF 14.4 ) Pub Date : 2018-07-07 , DOI: 10.1021/jacs.8b04770
Zipeng Zhao ₁ , Haotian Liu ₁ , Wenpei Gao ₂ , Wang Xue _{1,

3} , Zeyan Liu ₁ , Jin Huang ₁ , Xiaoqing Pan _{2,

4} , Yu Huang _{1,

5}

Affiliation

Hydrogen holds the potential of replacing nonrenewable fossil fuel. Improving the efficiency of hydrogen evolution reaction (HER) is critical for environmental friendly hydrogen generation through electrochemical or photoelectrochemical water splitting. Here we report the surface-engineered PtNi-O nanoparticles with enriched NiO/PtNi interface on surface. Notably, PtNi-O/C showed a mass activity of 7.23 mA/μg at an overpotential of 70 mV, which is 7.9 times higher compared to that of the commercial Pt/C, representing the highest reported mass activity for HER in alkaline conditions. The HER overpotential can be lowered to 39.8 mV at 10 mA/cm2 when platinum loading was only 5.1 μgpt/cm2, showing exceptional HER efficiency. Meanwhile, the prepared PtNi-O/C nanostructures demonstrated significantly improved stability as well as high current performance which are well over those of the commercial Pt/C and demonstrated capability of scaled hydrogen generation.

中文翻译：

具有创纪录高性能的表面工程 PtNi-O 纳米结构用于电催化析氢反应

氢具有替代不可再生化石燃料的潜力。提高析氢反应 (HER) 的效率对于通过电化学或光电化学水分解产生环境友好的氢气至关重要。在这里，我们报告了表面工程化的 PtNi-O 纳米粒子，在表面上具有富集的 NiO/PtNi 界面。值得注意的是，PtNi-O/C 在 70 mV 的过电位下显示出 7.23 mA/μg 的质量活性，是商业 Pt/C 的 7.9 倍，代表了碱性条件下 HER 的最高质量活性。当铂负载量仅为 5.1 μgpt/cm2 时，HER 过电位可在 10 mA/cm2 下降至 39.8 mV，显示出卓越的 HER 效率。同时，

更新日期：2018-07-07

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