Ultrasmall Cu7S4@MoS2 Hetero-Nanoframes with Abundant Active Edge Sites for Ultrahigh-Performance Hydrogen Evolution

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• 作者：Jun Xu ; Jiabin Cui ; Chong Guo ; Zipeng Zhao ; Rui Jiang ; Prof. Suying Xu ; Zhongbin Zhuang ; Prof. Dr. Yu Huang ; Prof. Dr. Leyu Wang and Prof. Dr. Yadong Li
• 刊名：Angewandte Chemie International Edition
• 出版年：2016
• 出版时间：May 23, 2016
• 年：2016
• 卷：55
• 期：22
• 页码：6502-6505
• 全文大小：1273K
• ISSN：1521-3773

文摘

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 Cu₇S₄@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.