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Highly stable single Pt atomic sites anchored on aniline-stacked graphene for the hydrogen evolution reaction

Abstract

Developing efficient and cost-effective electrocatalysts for hydrogen evolution reaction (HER) is highly desired for hydrogen economy. In this study, we developed a facile microwave reduction method to synthesize single Pt atoms anchored on aniline-stacked graphene (Pt SASs/AG) with outstanding HER performances. The Pt SASs/AG presents excellent HER activity with η= 12 mV at 10 mA cm-2 and mass current density of 22400 Ag-1Pt atη=50 mV, which is 46 times higher than that of commercial 20 wt% Pt/C. Moreover, the Pt SASs/AG catalyst is highly active and more stable than Pt/C. X-ray absorption fine spectroscopy (XAFS) and density functional theory (DFT) calculations elucidated that atomically isolated Pt coordinating with nitrogen of aniline optimized the electronic structure of Pt and hydrogen adsorption energy, eventually promoted HER activity. This study opens up a new avenue for the development of single Pt atomic electrocatalyst with high activity and stability.

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Publication details

The article was received on 01 Oct 2018, accepted on 12 Dec 2018 and first published on 12 Dec 2018


Article type: Paper
DOI: 10.1039/C8EE02888E
Citation: Energy Environ. Sci., 2019, Accepted Manuscript
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    Highly stable single Pt atomic sites anchored on aniline-stacked graphene for the hydrogen evolution reaction

    S. Ye, F. Luo, Q. Zhang, P. Zhang, T. Xu, D. He, L. Guo, Y. Zhang, C. He, X. Ouyang, Q. Wang, M. Gu, J. Liu and X. Sun, Energy Environ. Sci., 2019, Accepted Manuscript , DOI: 10.1039/C8EE02888E

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