Investigation of the Mechanical Behavior of Electrodes after Calendering and Its Influence on Singulation and Cell Performance

Battery cell production is a complex process chain with interlinked manufacturing processes. Calendering in particular has an enormous influence on the subsequent steps and final performance. However, effects mechanical properties of electrode, particular, have been insufficiently investigated. For this reason, impact different densification rates during calendering electrochemical performance NMC811 (LiNi0.8Mn0.1Co0.1O2) half-cells are investigated to identify relevant parameters. Based investigation, experimental design derived. Electrode elongations after orthogonal running direction cathode comparison hard carbon anode calendering. Elongations machine observed no major dependencies compaction rate In direction, however, significant elongation occurs as dependency for both NMC811. addition, geometric shape electrodes separation into individual sheets regard It shown that corrugations occur propagated single depending rate.