1. If you are plotting from LSV data, make sure that the scan rate is not greater than 5 mV/s.

2. Take the region at least 100 mV higher than the onset region to ensure you are analyzing the catalysis region

3. Take the log base 10 of |j| as the X -axis and overpotential at the Y-axis. This should yield a straight line.

4. Sometimes, there can be more than one slope. In that case, you can split it into two or more separate straight lines , and analyze the slope by linear fit. This can give insight to the mechanism occurring at different overpotential region.

There are other methods to reliable plot Tafel plot from potentiostatic studies like CP and CA.

I'd suggest the following papers for more clarity on this:

1. J. Am. Chem. Soc. 2010, 132, 51, 18214–18222

2. J. Phys. Chem. C 2019, 123, 50, 30252–30264

3. ACS Energy Lett. 2021, 6, 4, 1607–1611

4. RSC Adv., 2023, 13, 3843-3876

The problem is not how to plot it, but how to interpret.

Yurii V Geletii , I beg to differ, I think I read the question correctly

G. Srividhya , Your answer is correct and my comments was not to your answer, but to the title question. If someone does not know how to create Tafel (not tafel) plot, the most likely he would be unable to interpret it. Then, why you have to do something, if you don't know how to use it. This was my post about.

Yurii V Geletii understood. Couldn't agree more