Material and method for low internal resistance li-ion battery

Details Material and method for low internal resistance li-ion battery Material and method for low internal resistance li-ion battery

H - Electricity

01

M

H01M 4/64 (2006.01) H01M 4/66 (2006.01) H01M 4/58 (2006.01) H01M 4/62 (2006.01) H01M 4/74 (2006.01)

Patent

CA 2241409

An electrically-conductive collector element (23) in a polymeric laminate lithium ion rechargeable battery is cleaned of surface oxides and coated with an adherent conductive polymer film (34) which is substantially inert to battery electrolyte components and prevents recurrent formation of insulative collector surface oxides, thereby maintaining effective electrode/collector electrical conductivity and significantly reducing internal battery resistance.

Dans une pile rechargeable au lithium constituée d'un laminé polymère, un élément collecteur électriquement conducteur (23 est débarrassé des ses oxydes de surface et revêtu d'une couche de polymère conductrice adhésive (34), qui est sensiblement inerte vis-à-vis des composants électrolytiques et empêche la formation récurrente d'oxydes de surface isolants sur le collecteur, ce qui préserve l'efficacité de la conductivité électrique de l'électrode/du collecteur et réduit de manière significative la résistance interne de la pile.

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