Issue 24, 2017

A 2D free-standing film-inspired electrocatalyst for highly efficient hydrogen production

Abstract

The development of self-supporting binder-free catalysts is of great significance for the practical application of the electrocatalytic hydrogen evolution reaction (HER). In this work, we report a rationally assembled two dimensional (2D) free-standing film based on 1D molybdenum carbide nanoribbons between nitrogen doped graphene nanolayers (Mo2C nanoribbon/N-G). Due to multichannel and expeditious charge and mass transport, the integrated Mo2C nanoribbon/N-G film exhibits a remarkable HER performance with a low onset potential of 84 mV (vs. the RHE), a small Tafel slope of 57 mV dec−1, and an overpotential of 162 mV (vs. the RHE) to reach a current density of 10 mA cm−2, superior to most transition metal based free-standing catalysts reported previously. This work provides a great advance for designing and fabricating cost-effective, applicable catalysts for hydrogen evolution and water splitting.

Graphical abstract: A 2D free-standing film-inspired electrocatalyst for highly efficient hydrogen production

Supplementary files

Article information

Article type
Communication
Submitted
13 Apr. 2017
Accepted
22 Maijs 2017
First published
23 Maijs 2017

J. Mater. Chem. A, 2017,5, 12027-12033

A 2D free-standing film-inspired electrocatalyst for highly efficient hydrogen production

J. Gao, Z. Cheng, C. Shao, Y. Zhao, Z. Zhang and L. Qu, J. Mater. Chem. A, 2017, 5, 12027 DOI: 10.1039/C7TA03228E

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