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Doubt regarding capacity_fade.mph application library
Posted 09.03.2022, 07:52 GMT-5 1 Reply
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Capacity fade of Lithium-ion batteries can be due to multiple reasons including SEI, various side reactions occuring at different temperatures including oxidation of electrolyte at positive electrode, reduction of electrolyte at negative electrode and various other side reactions which can occur under different operating conditions. So, how to include the side reactions other than SEI as we could not find any option to do that within the battery design module ?
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You can add as many side reactions as you like. Simply right-click the Porous Electrode and add an additional Porous Electrode Reaction node.
For an example, please check out https://www.comsol.com/model/lithium-plating-100341
for how to set up lithium plating.
You can also check out the embedded model in the app of https://www.comsol.com/model/lithium-battery-designer-51301
for how to set up gassing on the positive side.