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Electric double layer capacitor (EDLC)
Posted 4 mar 2016, 06:41 GMT-5 Low-Frequency Electromagnetics, Battery Design, Chemical Reaction Engineering, Materials Version 5.2 0 Replies
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I am trying to develop a model to describe a EDLC. There are some papers of COMSOL developers on this topic.
In the first model, a PNP (poisson - nerst plank model) is developed. The model is available in COMSOL and coupled electrostatic and transport of diluted species. I also found a a project explaining the model:
www.comsol.com/model/diffuse-double-layer-21981
tigerprints.clemson.edu/cgi/viewcontent.cgi?article=2347&context=all_theses
In the second model, a PNP model + butler-voltmer eq. is developed. However, I do not know how to couple butler-voltmer kinetics to the PNP model.
www.comsol.co.in/paper/simulat...-double-layer-capacitance-7925
I found in COMSOL help that PNP model could be coupled to second current distribution physics, and with it add butler- voltmer equations. However, I don,t find how to couple correctly the voltage.
In comsol support they say me that another option to model EDLC was available, using battery with binary electrolyte. In EDLC, absorption/desorption occurs, non-faradaic reactions. However, I do not know how to delete the reaction node in porous electrodes.
Hello Laura Oca
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