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Hierarchically interconnected nitrogen-doped carbon nanosheets for efficient hydrogen evolution reaction

Abstract

Exploring low-cost and efficient electrocatalysts based on earth-abundant elements for the hydrogen evolution reactions (HER) is of great importance for the development of clean and renewable energy. In this work, we report a facile self-foaming strategy for synthesis of hierarchically interconnected nitrogen-doped carbon nanosheets (NCNS). The doping N species within the 3D interconnected carbon network affords rich active sites for HER and facilitates fast charge transfer. As a result, the NCNS exhibits excellent catalytic activity with an onset potential of -65 mV, a Tafel slope of 81 mV dec-1 with robust stability over 10 h in acidic medium. Further analyses suggest that the graphitic N species in the NCNS contribute to its catalytic activity. Such a high catalytic performance makes the NCNS a promising metal-free HER electrocatalyst for practical hydrogen production.

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Publication details

The article was received on 26 Aug 2017, accepted on 27 Sep 2017 and first published on 28 Sep 2017


Article type: Paper
DOI: 10.1039/C7NR06374A
Citation: Nanoscale, 2017, Accepted Manuscript
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    Hierarchically interconnected nitrogen-doped carbon nanosheets for efficient hydrogen evolution reaction

    H. Wang, Q. Yi, L. Gao, Y. Gao, T. Liu, Y. Jiang, Y. Sun and G. Zou, Nanoscale, 2017, Accepted Manuscript , DOI: 10.1039/C7NR06374A

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