Hydrogen Evolution Reaction of γ-Mo0.5W0.5 C Achieved by High Pressure High Temperature Synthesis
نویسندگان
چکیده
For the first time, the hydrogen evolution reaction (HER) electrocatalytic performances of incompressible γ-Mo0.5W0.5C, prepared by high-pressure, high-temperature (HPHT) synthesis, were investigated in the electrolyte. The polarization curve of the γ-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 γ-Mo0.5W0.5C is 74 mV·dec−1. After a 1000-cycle test, and then exposure to the air for six months, the γ-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.
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