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Nanocomposite of MoS2 on ordered mesoporous carbon nanospheres: A highly active catalyst for electrochemical hydrogen evolution

Xiaojun Bian, Jie Zhu, Lei Liao, Micheál D. Scanlon, Peiyu Ge, Chang Ji, Hubert H. Girault, Baohong Liu
2012 Electrochemistry communications  

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An efficient electrocatalyst for hydrogen evolution has been developed based upon in situ reduction of MoS 2 on ordered mesoporous carbon nanospheres (MoS 2 /MCNs). The properties of MoS 2 /MCNs were characterised by scanning electron microscopy, transmission electron microscopy and X-ray photoelectron spectroscopy. Polarisation curves and electrochemical impedance measurements were obtained for MoS 2 /MCNs modified glassy carbon electrodes. The MoS 2 /MCNs exhibit high catalytic activity for
more » ... drogen evolution with a low overpotential and a very high current density. A theory outlining the origins of the Tafel slope for a Volmer-Heyrovsky (rate determining step) mechanism of hydrogen evolution at MoS 2 catalytic edge sites is presented.
doi:10.1016/j.elecom.2012.06.009 fatcat:cb72id6fmvdo7lw4rrg2wgsbtq
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Xiaojun Bian, Jie Zhu, Lei Liao, Micheál D. Scanlon, Peiyu Ge, Chang Ji, Hubert H. Girault, Baohong Liu. "Nanocomposite of MoS2 on ordered mesoporous carbon nanospheres: A highly active catalyst for electrochemical hydrogen evolution." Electrochemistry communications (2012) 128-132