Theory 08/Damkohler Number/Batteries
Electrode Use Is a Damkohler
The claim
The fraction of an electrode that participates in a fast discharge is set by the ratio of reaction rate to ion transport rate, so thick electrodes at high rate use only their surface.
01Mechanism
Ions must reach reaction sites; when reaction outpaces transport, the interior is starved and inactive.
02Prediction
Utilisation should fall as the ratio rises.
03Refutation
Utilisation tracking thickness alone would remove kinetics.