cell expansion

Relation Between Silicon-Based Additives in the Anode and the Gap Between Jelly Roll and Can

graph of Si additive and gap between jelly roll and can in a cylindrical cell design

AION Engineering INC All cells discussed here are 18650 NMC cells. Balancing Energy Density and Safety Using silicon-based additives in the anode requires a delicate trade-off in cell design. While silicon increases the energy density, it also brings significant challenges for cell safety. Why More Space is Needed Silicon expands and contracts during charge-discharge cycling, … Read more

Nanoscale Elastic Coatings

elastic nano-spring coatings

During the charge / discharge the cathode and anode undergo an expansion and contraction. As you charge a cell it expands, when you discharge a cell it contracts and as the cell ages over its lifetime we see a continuing cell expansion. Thus the cell expansion can be divided into: This expansion and contraction puts … Read more