Hydrogen Evolution Reaction of [gamma]-Mo0.5W0.5 C Achieved by High Pressure High Temperature Synthesis

For the first time, the hydrogen evolution reaction (HER) electrocatalytic performances of incompressible [gamma]-Mo0.5W0.5C, prepared by high-pressure, high-temperature (HPHT) synthesis, were investigated in the electrolyte. The polarization curve of the [gamma]-Mo0.5W0.5C cathode exhibits the curr...

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Bibliographic Details
Published in:Catalysts 2016-01, Vol.6 (12), p.208
Main Authors: Hu, Yingfei, Jia, Gan, Ma, Shuailing, Hu, Jianqiang, Zhu, Pinwen, Cui, Tian, Li, Zhaosheng, Zou, Zhigang
Format: Article
Language:English
Subjects:
Catalysts
Chemical reactions
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Summary:For the first time, the hydrogen evolution reaction (HER) electrocatalytic performances of incompressible [gamma]-Mo0.5W0.5C, prepared by high-pressure, high-temperature (HPHT) synthesis, were investigated in the electrolyte. The polarization curve of the [gamma]-Mo0.5W0.5C cathode exhibits the current density of 50 mA*cm-2 at an overpotential value of 320 mV. The corresponding Tafel slope of the incompressible [gamma]-Mo0.5W0.5C is 74 mV*dec-1. After a 1000-cycle test, and then exposure to the air for six months, the [gamma]-Mo0.5W0.5C electrode performed a current density of 50 mA*cm-2 at an overpotential of 354 mV, which was close to the initial one.
ISSN:2073-4344
DOI:10.3390/catal6120208