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

被引：28
作者：
Gao, Jian [1 ]
Cheng, Zhihua [1 ]
Shao, Changxiang [1 ]
Zhao, Yang [1 ]
Zhang, Zhipan [1 ]
Qu, Liangti [1 ]
机构：
[1] Beijing Inst Technol, Sch Chem, Key Lab Photoelect Electrophoton Convers Mat, Beijing 100081, Peoples R China
来源：
JOURNAL OF MATERIALS CHEMISTRY A | 2017年 / 5卷 / 24期
基金：
北京市自然科学基金;
关键词：
MOLYBDENUM-CARBIDE; EVOLUTION; CARBON; MO2C; NANOPARTICLES; NANOSHEETS; ELECTRODES; NANOTUBES; NANOBELTS; CATALYSTS;
D O I：
10.1039/c7ta03228e
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
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 162mV (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.
引用
收藏
页码：12027 / 12033
页数：7
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