MoS2 Nanosheet Assembling Superstructure with a Three-Dimensional Ion Accessible Site: A New Class of Bifunctional Materials for Batteries and Electrocatalysis

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• 作者：Jiabao Ding ; Yu Zhou ; Yanguang Li ; Shaojun Guo ; Xiaoqing Huang
• 刊名：Chemistry of Materials
• 出版年：2016
• 出版时间：April 12, 2016
• 年：2016
• 卷：28
• 期：7
• 页码：2074-2080
• 全文大小：548K
• 年卷期：0
• ISSN：1520-5002

文摘

The layered molybdenum disulfide (MoS₂) nanostructured materials are of great interest for electrochemical energy storage and conversion and electrocatalytic water splitting. However, they still exhibit very limited performance because of their limited active sites. To create more efficient MoS₂ materials, herein, we develop a simple yet efficient approach to a unique column-like MoS₂ superstructure composed of edge-terminated MoS₂ nanosheets (CLET MoS₂). These MoS₂ nanosheets as building blocks with fully exposed active edges are oriented in a preferred manner, rendering CLET MoS₂ that exhibits excellent electrochemical performance in both lithium ion storage and hydrogen evolution reaction (HER). Compared with that of commercial MoS₂, these hierarchical MoS₂ superstructures possess much higher specific capacity and superior cycling performance for lithium ion storage and excellent electrocatalytic activity and stability for HER with a very low Tafel slope of 39 mV decade^–1, showing their great potential applications in lithium ion batteries and water splitting.