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Ultrasmall Cu 7 S 4 @MoS 2 Hetero‐Nanoframes with Abundant Active Edge Sites for Ultrahigh‐Performance Hydrogen Evolution
Author(s) -
Xu Jun,
Cui Jiabin,
Guo Chong,
Zhao Zipeng,
Jiang Rui,
Xu Suying,
Zhuang Zhongbin,
Huang Yu,
Wang Leyu,
Li Yadong
Publication year - 2016
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201600686
Subject(s) - overpotential , chalcogenide , molybdenum disulfide , catalysis , materials science , active site , molybdenum , nanotechnology , enhanced data rates for gsm evolution , hydrogen , hydrogen production , electrode , chemical engineering , chemistry , electrochemistry , optoelectronics , metallurgy , organic chemistry , telecommunications , computer science , engineering
Increasing the active edge sites of molybdenum disulfide (MoS 2 ) is an efficient strategy to improve the overall activity of MoS 2 for the hydrogen‐evolution reaction (HER). Herein, we report a strategy to synthesize the ultrasmall donut‐shaped Cu 7 S 4 @MoS 2 hetero‐nanoframes with abundant active MoS 2 edge sites as alternatives to platinum (Pt) as efficient HER electrocatalysts. These nanoframes demonstrate an ultrahigh activity with 200 mA cm −2 current density at only 206 mV overpotential using a carbon‐rod counter electrode. The finding may provide guidelines for the design and synthesis of efficient and non‐precious chalcogenide nanoframe catalysts.