Theory 122/Battery charge cycle/Progression phase
Progression Is Coulombic Efficiency
The claim
Capacity fade per cycle is set by the ratio of parasitic side reactions to reversible intercalation, so the same chemistry degrades differently at different rates.
01Mechanism
Side reactions consume lithium; the ratio sets the loss per cycle.
02Prediction
Fade should track the ratio.
03Refutation
Fade tracking cycle count would remove side reactions.