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Ultrasmall Cu7S4@MoS2 Hetero‐Nanoframes with Abundant Active Edge Sites for Ultrahigh‐Performance Hydrogen Evolution |
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| Authors: | Jun Xu Jiabin Cui Chong Guo Zipeng Zhao Rui Jiang Prof Suying Xu Zhongbin Zhuang Prof?Dr Yu Huang Prof?Dr Leyu Wang Prof?Dr Yadong Li |
| Institution: | 1. State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing, China;2. Department of Materials Science & Engineering, University of California Los Angeles, CA, USA;3. Department of Chemistry, Tsinghua University, Beijing, China |
| 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 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. |
| Keywords: | electrocatalysis hydrogen-evolution reaction molybdenum disulfides nanoframes |