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Engineering FeNi alloy nanoparticles via synergistic ultralow Pt doping and nanocarbon capsulation for efficient hydrogen evolution

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Abstract

Construction of ultralow platinum (Pt) electrocatalysts is essential for high-performance and cost-effective electrochemical hydrogen evolution reaction (HER). In this work, we report a facile strategy to synthesize ultralow (0.66 wt%) Pt doped FeNi alloy nanoparticles (NPs) embedded in a porous graphene shell architecture (denoted as Pt-FeNi@C). The resulting Pt-FeNi@C catalyst exhibited an efficient specific activity and a small Tafel slope for the HER in 0.5 M H2SO4. Meanwhile, it also possessed an excellent stability, remaining stable at a current density of 10 mA cm−2 for 10 h with negligible loss. In particular, the mass activity of Pt-FeNi@C is 63.0 times higher than that of the commercial Pt/C catalyst at an overpotential of 50 mV. This work may shed some light on engineering economic and efficient ultralow noble metal-based catalysts for efficient HER and beyond.

Graphical abstract: Engineering FeNi alloy nanoparticles via synergistic ultralow Pt doping and nanocarbon capsulation for efficient hydrogen evolution

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Publication details

The article was received on 06 Aug 2019, accepted on 19 Sep 2019 and first published on 26 Sep 2019


Article type: Paper
DOI: 10.1039/C9TA08594G
J. Mater. Chem. A, 2019, Advance Article

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    Engineering FeNi alloy nanoparticles via synergistic ultralow Pt doping and nanocarbon capsulation for efficient hydrogen evolution

    A. Fan, C. Qin, X. Zhang, J. Yang, J. Ge, S. Wang, X. Yuan, S. Wang and X. Dai, J. Mater. Chem. A, 2019, Advance Article , DOI: 10.1039/C9TA08594G

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