Highly Efficient Hydrogen Evolution Reaction Using Crystalline Layered Three-Dimensional Molybdenum Disulfides Grown on Graphene Film

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• 作者：Amirhossein Behranginia ; Mohammad Asadi ; Cong Liu ; Poya Yasaei ; Bijandra Kumar ; Patrick Phillips ; Tara Foroozan ; Joseph C. Waranius ; Kibum Kim ; Jeremiah Abiade ; Robert F. Klie ; Larry A. Curtiss ; Amin Salehi-Khojin
• 刊名：Chemistry of Materials
• 出版年：2016
• 出版时间：January 26, 2016
• 年：2016
• 卷：28
• 期：2
• 页码：549-555
• 全文大小：412K
• ISSN：1520-5002

文摘

Electrochemistry is central to applications in the field of energy storage and generation. However, it has advanced far more slowly over the last two decades, mainly because of a lack of suitable and affordable catalysts. Here, we report the synthesis of highly crystalline layered three-dimensional (3D) molybdenum disulfide (MoS₂) catalysts with bare Mo-edge atoms and demonstrate their remarkable performance for the hydrogen evolution reaction (HER). We found that Mo-edge-terminated 3D MoS₂ directly grown on graphene film exhibits a remarkable exchange current density (18.2 μA cm^–2) and turnover frequency (>4 S^–1) for HER. The obtained exchange current density is 15.2 and 2.3 times higher than that of MoS₂/graphene and MoS₂/Au catalysts, respectively, both with sulfided Mo-edge atoms. An easily scalable and robust growth process on a wide variety of substrates, along with prolonged stability, suggests that this material is a promising catalyst in energy-related applications.