Using Tafel curves

  • Thread starter squaric
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  • #1
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Homework Statement



After plotting log(I/A) vs E/mV, you get a tafel curve. calculate the exchange current density, Io, the cathodic transfer coefficient ac and the rate constant of the reaction k.

Homework Equations





The Attempt at a Solution



Is it simply, the exchange current density is e(y intercept)

cathodic transfer coeffiecent, the gradient of the line

And then putting those two into the following quation to get K

lnI = lnIo + (1-ac) x nF/RT

Thanks for your help!
 

Answers and Replies

  • #2
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I think it's ln(I/A) not log, so it's not actually a tafel curve it's a straight line.

Does this make it work?
 

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