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Issue 22, 2019
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Interface engineering in the BNNS@Ti3C2 intercalation structure for enhanced electrocatalytic hydrogen evolution

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Abstract

Electrocatalysts with the advantages of stability, high efficiency, and noble-metal-free features are in urgent need for water splitting. Herein, for the first time, based on the interface engineering, a novel BNNS@Ti3C2 intercalation electrocatalyst was prepared via a controllable synthesis strategy. The rich active sites of Ti3C2 were better protected as well as were able to serve as a bridge to connect the different layers of BNNS. Furthermore, combining the first-principles calculations, the nature of the interface proved the transformation from semiconducting properties to metallicity in this unique intercalation structure. The as-obtained composite possessed improved conductivity and abundant catalytic active sites, exhibiting a low onset potential of 23 mV and overpotential of 52 mV (vs. RHE) at 10 mA cm−2 with outstanding stability. BNNS@Ti3C2 was used as an electrocatalyst for the first time without noble-metal assistance. This study demonstrates that the layered materials can serve as a promising electrocatalyst by interfacing with the intercalation structure.

Graphical abstract: Interface engineering in the BNNS@Ti3C2 intercalation structure for enhanced electrocatalytic hydrogen evolution

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Publication details

The article was received on 22 Mar 2019, accepted on 06 May 2019 and first published on 06 May 2019


Article type: Paper
DOI: 10.1039/C9NJ01504C
New J. Chem., 2019,43, 8613-8619

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    Interface engineering in the BNNS@Ti3C2 intercalation structure for enhanced electrocatalytic hydrogen evolution

    Z. Ai, B. Chang, C. Xu, B. Huang, Y. Wu, X. Hao and Y. Shao, New J. Chem., 2019, 43, 8613
    DOI: 10.1039/C9NJ01504C

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