Hi, I'm graduate student working on electrocatalyst.
Most of the research article about electrocatalysis HER only measure the electrochemical performance ,such as LSV, Tafel slope, overpotentail. The production rate of hydrogen is seldom measured by research group.
Is the alkaline electrolyte won't have other reaction except HER?
I appreciate your help and sorry for my poor english.
You raise the extremely important question. Based on the current state of the art in the catalytic water splitting (HER and OER), the formation of H2(O2) must be confirmed, if you submit your manuscript for publication. Otherwise, the submitted manuscript must be rejected. Unfortunately, the journals are flooded by highly questionable papers.
The volumetric H2 evolution rate is actually measured in some experiments concurrently with the current/charge measurements. It is not measured all the time, because such experiments are more time-consuming and require more expensive setup. The most common situation , when H2 volumetric rate is measured is during corrosion at open circuit potential, when DC electric current measurements are not possible.
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