Influence of Electrode Corrugation after Calendering on the Geometry of Single Electrode Sheets in Battery Cell Production

Calendering is an essential process step in battery cell production. By selective compaction of the material, performance can be optimized. During processing, corrugations occur machine direction, which are characterized this article relation to material systems LiNi 0.8 Mn 0.1 Co O 2 (NMC811) and 0.6 0.2 (NMC622) as well rate web tension. It shown that strongly dependent on compaction. The system tension show a weaker influence corrugation characteristics. Subsequently, single electrode sheets cut from coils their geometry investigated. hardly propagates further into electrodes, explained with storage time electrodes. Rather, coil bending influences sheet geometry. position conductor tab also has important influence.