Ultrasmall Cu7 S4 @MoS2 Hetero-Nanoframes with Abundant Active Edge Sites for Ultrahigh-Performance Hydrogen Evolution

Jun Xu; Jiabin Cui; Chong Guo; Zipeng Zhao; Rui Jiang; Suying Xu; Zhongbin Zhuang; Yu Huang; Leyu Wang; Yadong Li

doi:10.1002/anie.201600686

Ultrasmall Cu7 S4 @MoS2 Hetero-Nanoframes with Abundant Active Edge Sites for Ultrahigh-Performance Hydrogen Evolution

Angew Chem Int Ed Engl. 2016 May 23;55(22):6502-5. doi: 10.1002/anie.201600686. Epub 2016 Apr 20.

Authors

Jun Xu¹, Jiabin Cui¹, Chong Guo¹, Zipeng Zhao², Rui Jiang¹, Suying Xu¹, Zhongbin Zhuang¹, Yu Huang², Leyu Wang³, Yadong Li⁴

Affiliations

¹ State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing, 100029, China.
² Department of Materials Science & Engineering, University of California Los Angeles, CA, 90095, USA.
³ State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing, 100029, China. lywang@mail.buct.edu.cn.
⁴ Department of Chemistry, Tsinghua University, Beijing, 100086, China.

PMID: 27094459
DOI: 10.1002/anie.201600686

Abstract

Increasing the active edge sites of molybdenum disulfide (MoS2 ) is an efficient strategy to improve the overall activity of MoS2 for the hydrogen-evolution reaction (HER). Herein, we report a strategy to synthesize the ultrasmall donut-shaped Cu7 S4 @MoS2 hetero-nanoframes with abundant active MoS2 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.

Keywords: electrocatalysis; hydrogen-evolution reaction; molybdenum disulfides; nanoframes.

Publication types

Research Support, Non-U.S. Gov't