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Interface Engineering in BNNS@Ti3C2 Intercalation Structure for Enhanced Electrocatalytic Hydrogen Evolution

Abstract

Electrocatalysts with advantages of stability, high efficiency and noble-metal-free feature are in urgent need for water splitting. Herein, based on the interface engineering, a novel BNNS@Ti3C2 intercalation electrocatalyst via controllable synthesis strategy is prepared for the first time. Rich active sites of Ti3C2 are better protected as well as serve as a bridge to connect different layers of BNNS. Furthermore, combining the first-principles calculation, the nature of interface is proved the transformation from semiconducting property to metallicity in the unique intercalation structure. The as-obtained composite possesses the 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 is used as the electrocatalyst for the first time without noble-metal assistance. This work demonstrates that the layered materials can serve as a promising electrocatalyst by interfacing intercalation structure.

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Supplementary files

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, Accepted Manuscript

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    Interface Engineering in BNNS@Ti3C2 Intercalation Structure for Enhanced Electrocatalytic Hydrogen Evolution

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

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