Series of Metal carbides tested as Hydrogen Evolution Reaction catalyst.
Dear Ashish
In electrochemistry (in general) and in catalyst field (in particular); in order to evaluate how fast the hydrogen overvoltage, in which hydrogen gas evolves at a certain cathodic potential at a metal carbide sample in a particular solution, one should consider the following steps:
1-Electrochemical polarize the sample in the cathodic direction with respect to its open circuit potential of the sample in the solution.
2-The polarization of the sample can be in a step wise manner or under a particular potential scan rate.
3-As soon as the hydrogen gas evolves, the corresponding potential to the hydrogen evolution is the hydrogen overvoltage.
Dear Sir,
Thanks for the reply.
Actually I am comparing series of catalyst which are differing in the weight % of the loading component.
So apart from evaluating its BET surface area , how could we evaluate its electrochemical surface area. Like in Pt catalyst we incorporate H desorption peak area for evaluating its ECSA. I have the doubt for how to solve with Carbide catalyst.
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Please use BET measuring surface area system and equipment
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