Battery knowledge · Aging and degradation
Binder degradation
Loss of the binder’s ability to hold particles to each other and to the foil, from swelling in electrolyte, repeated strain or heat. Particles that lose contact stop storing lithium, and the coating can delaminate from the foil.
Example
Aging and degradation: an example situation
Capacity loss and resistance rise can have different causes; a film-growth curve cannot identify both.
Read Binder degradation alongside Binder in this context. A polymer that holds electrode particles to each other and to the foil — typically PVDF for positive electrodes and CMC with SBR for graphite. It stores no charge, so cell designers use as little as the electrode needs.
Use in Lemonergy
Separate mechanisms, observations and fitted models.
This is a reference concept. No executable Lemonergy block has been verified for this term.
References & further reading
Further reading on this topic
These sources provide broader context; they are not presented as citations for every statement in this entry.
- Lithium ion battery degradation: what you need to know
Physical Chemistry Chemical Physics · 2021
Topic background · Degradation mechanisms, modes, operational effects and their interactions.