Dear Dr. Saeid

In this process, the voltage can be measured. There is a device that measures the voltage, current, power, or time, which is digital. And it connects to the calculator and any variable that can be measured, for example if you want the voltage you put it on the voltage and draw the voltage to you on the calculator and also shows the voltage values

Best Regards

Dear Saeid Karimi;

you can calculate the gas amount from the current of the electrode, as detailed in the following reference;

https://www.chem.purdue.edu/gchelp/howtosolveit/Electrochem/Electrolysis.htm

Dear Haleemah J. Mohammed ,

I am aware that I can be able to use the electrochemical approach to measure the overpotential. While, I want to know the detail of technique which can be utilized for measuring this value. If you have a paper or an instruction, please share with me

Thanks a bunch,

Saeid

Dear Mahmood H.

Thank you for adding your answer.

I think the technique what you mentioned, is the best way to obtain the voltage in which the hydrogen releasing starts. Although, in terms of accurate measuring of hydrogen gas in the electrowinning is not simple and may face some practical problem. If you have known any other ways to address this problem, please send me.

Sincerely,

Saeid

Dear Dr

I send some research links for scientific ben

https://scholarsmine.mst.edu/cgi/viewcontent.cgi?article=6093&context=masters_theses

https://www.911metallurgist.com/electrowinning-zinc/

https://link.springer.com/article/10.1007/BF01076059

http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.844.9198&rep=rep1&type=pdf

dear Saeid Karimi;

You can use the water displacement method to collect hydrogen gas with gas detectors, but you should avoid any spark because the explosion limit of hydrogen is very low as you know