Wolfram Demonstrations Project
8847

Warburg Impedance

The Warburg impedance is the diffusional impedance for 1D linear diffusion. This Demonstration shows the Randles equivalent circuit, taking into account the electrolyte resistance , the charge transfer resistance , and the double layer capacitance . Various shapes of the impedance diagram can be obtained when changing the parameter .

SNAPSHOTS

  • [Snapshot]
  • [Snapshot]
  • [Snapshot]

DETAILS

The Warburg impedance is the diffusional impedance for the diffusion layer of infinite thickness, which is characterized for the macroelectrode.
The Warburg impedance is given by , where is the relative parameter of the charge transfer and the diffusion coefficient ,
,
where , are heterogeneous kinetics on the electrode and , are the diffusion coefficients of the species oxidant and reductant.
With Warburg impedance, one can describe an electrochemical cell for the macroelectrode by the Randles equivalent circuit:

RELATED LINKS

PERMANENT CITATION

"Warburg Impedance" from the Wolfram Demonstrations Project
 http://demonstrations.wolfram.com/WarburgImpedance/
Contributed by: Quang-Dao Trinh
    • Share:

Embed Interactive Demonstration New!

Just copy and paste this snippet of JavaScript code into your website or blog to put the live Demonstration on your site. More details »

Files require Wolfram CDF Player or Mathematica.





Related Topics
 
RELATED RESOURCES
Mathematica »
 The #1 tool for creating Demonstrations
and anything technical. 		Wolfram|Alpha »
 Explore anything with the first
computational knowledge engine. 		MathWorld »
 The web's most extensive
mathematics resource. 		Course Assistant Apps »
 An app for every course—
right in the palm of your hand.
Wolfram Blog »
 Read our views on math,
science, and technology. 		Computable Document Format »
 The format that makes Demonstrations
(and any information) easy to share and interact with. 		STEM Initiative »
 Programs & resources for
educators, schools & students. 		Computerbasedmath.org »
 Join the initiative for modernizing
math education.
Powered by Wolfram Mathematica © 2013 Wolfram Demonstrations Project & Contributors  |  Terms of Use  |  Privacy Policy  |  RSS Give us your feedback
Note: To run this Demonstration you need Mathematica 7+ or the free Mathematica Player 7EX
Download or upgrade to Mathematica Player 7EX
I already have Mathematica Player or Mathematica 7+