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

2012

June

Electrochemistry Communications

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

Published

()

Hydrogen evolution reaction Mesoporous carbon nanospheres Molybdenum disulfide

22

128

132

An efficient electrocatalyst for hydrogen evolution has been developed based upon in situ reduction of MoS2 on ordered mesoporous carbon nanospheres (MoS2/MCNs). The properties of MoS2/MCNs were characterised by scanning electron microscopy, transmission electron microscopy and X-ray photoelectron spectroscopy. Polarisation curves and electrochemical impedance measurements were obtained for MoS2/MCNs modified glassy carbon electrodes. The MoS2/MCNs exhibit high catalytic activity for hydrogen 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 MoS2 catalytic edge sites is presented.

http://ac.els-cdn.com/S1388248112002548/1-s2.0-S1388248112002548-main.pdf?_tid=39898f38-690d-11e4-927c-00000aacb35e&acdnat=1415646805_148d2b0b9f5e17f68ab85ce4c15b42be doi=10.1016/j.elecom.2012.06.009

10.1016/j.elecom.2012.06.009