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Overpotential Definition

In the user guide for the electrochemistry branch, overpotential is often defined as the difference between electric and electrolyte potential and the reversible potential, i.e. eta = phi_s - phi_l -...

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Re: Overpotential Definition

There are different kinds of overpotentials. The most important and usual are 1. activation overpotential 2. concentration overpotential The first one is the deviation from the reversible potential at...

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Re: Overpotential Definition

Thank you for your reply. However, what I want is the exact origin/reference for this particular expression eta = phi_s - phi_l - E_eq Thank you anyway.

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Overpotential Definition

In the user guide for the electrochemistry branch, overpotential is often defined as the difference between electric and electrolyte potential and the reversible potential, i.e. eta = phi_s - phi_l -...

View Article

Re: Overpotential Definition

There are different kinds of overpotentials. The most important and usual are 1. activation overpotential 2. concentration overpotential The first one is the deviation from the reversible potential at...

View Article


Re: Overpotential Definition

Thank you for your reply. However, what I want is the exact origin/reference for this particular expression eta = phi_s - phi_l - E_eq Thank you anyway.

View Article

Re: Overpotential Definition

Are there any comsol models that looks at strictly distributing components of these Overpotential as you change the adjustable parameter?

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Re: Overpotential Definition

Could you please clarify your question? Lasse

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Re: Overpotential Definition

Dear Lasse Murtomäki, Would you please guide me what is the exact meaning of “the electrode potential (phi L)” and “electrolyte potential (Phi S)”? Let me make my question clear: I am trying to model...

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Overpotential Definition

In the user guide for the electrochemistry branch, overpotential is often defined as the difference between electric and electrolyte potential and the reversible potential, i.e. eta = phi_s - phi_l -...

View Article

Re: Overpotential Definition

There are different kinds of overpotentials. The most important and usual are 1. activation overpotential 2. concentration overpotential The first one is the deviation from the reversible potential at...

View Article

Re: Overpotential Definition

Thank you for your reply. However, what I want is the exact origin/reference for this particular expression eta = phi_s - phi_l - E_eq Thank you anyway.

View Article

Re: Overpotential Definition

Are there any comsol models that looks at strictly distributing components of these Overpotential as you change the adjustable parameter?

View Article


Re: Overpotential Definition

Could you please clarify your question? Lasse

View Article

Re: Overpotential Definition

Dear Lasse Murtomäki, Would you please guide me what is the exact meaning of “the electrode potential (phi L)” and “electrolyte potential (Phi S)”? Let me make my question clear: I am trying to model...

View Article


Overpotential Definition - same issue

I am using the "Tertiary Current Distribution, Nernst-Planck", there I do use an "Electrolyte-Electrode Boundary Interface". For the kinetics you do need eta, which is used for example in the...

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Re: Overpotential Definition - same issue

Dear all phi_l is the Galvani potential of the liquid phase and phi_s is that of the solid phase, viz, the electrode. The theoretical basis of phi_s is in the Fermi levels where electrons reside, but...

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Re: Overpotential Definition - same issue

hello, I am as well facing the same confusion, I am trying to model half cell reaction (Anode) and get the activation overpotential or anodic polarization. I . Can anybody guide me on 1. if I am using...

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Re: Overpotential Definition - same issue

Hi Use the difference phis - phil and subfract for Eeq where no current is flowing. In the current-voltage simulation, choose Electric potential. Lasse

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Re: Overpotential Definition - same issue

Hello Lass, Thank you so much... :) Nive

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