1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: Using Tafel curves

  1. Jan 19, 2010 #1
    1. The problem statement, all variables and given/known data

    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.

    2. Relevant equations



    3. 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!
     
  2. jcsd
  3. Jan 19, 2010 #2
    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?
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook