Discussion Closed This discussion was created more than 6 months ago and has been closed. To start a new discussion with a link back to this one, click here.

Diffuse Double Layer Model - Interpretation of results

Please login with a confirmed email address before reporting spam

I have been trying to recreate this model :

www.comsol.com/model/model-of-a-diffuse-double-layer-13525, which is based on the Paper web.mit.edu/bazant/www/papers/pdf/Bazant_2005_SIAM_J_Appl_Math_MTF2.pdf .

This might sound like an unusual question, but I'm regarding the dimensionless charge density -Why is the Charge density across the domain asymmetrically distributed? i.e, close to the Cathode, it reaches 0.6, while on the Anode, it reaches -1.8. I'm not really able to understand what is the physical reason behind this. Mathematically, I can see that the distribution of Anions is an exponential curve dependent on Potential, which is inherently asymmetric, but even then, shouldn't the distribution of Cations and the distribution of Anions be 'inverses' of each other? I have attached an image of the plot that I'm referring to.


0 Replies Last Post Jan 7, 2015, 12:16 p.m. EST
COMSOL Moderator

Hello Kumar Krishnamoorthy

Your Discussion has gone 30 days without a reply. If you still need help with COMSOL and have an on-subscription license, please visit our Support Center for help.

If you do not hold an on-subscription license, you may find an answer in another Discussion or in the Knowledge Base.

Note that while COMSOL employees may participate in the discussion forum, COMSOL® software users who are on-subscription should submit their questions via the Support Center for a more comprehensive response from the Technical Support team.