UL BATTERY PRESENTATION: SAFETY ASPECTS OF AGING EFFECTS IN LITHIUM-ION BATTERIES

摘要

Usually, SEI will be formed during the 1st cycle SEI conversion, stabilization and growth will also proceed during further cycling and storage. Normally the SEI protects (i) the electrolyte compounds from further reduction and (ii) the charged electrode from corrosior Under a thermal aging condition, SEI film starts to break dowr or to dissolve However, also a restructuring of the damaged SEI or a re-precipitation of dissolved SEI products might take place. SEI growth leads to an impedance rise at the anode → thermal effect Incomplete charge transfer may lead to lithium plating.