Process for manufacturing polymer electrolytes

A method for the preparation of polymer electrolytes used in rechargeable lithium intercalation cells that contain a lithium salt capable of dissociation dispersed in a polymer matrix comprising a self-supporting vinylidene fluoride/hexafluoropropylene copolymer film, comprises exchanging plasticise...

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Bibliographische Detailangaben
1. Verfasser:	BAEUERLEIN, PETER
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BASIC ELECTRIC ELEMENTS CABLES CONDUCTORS ELECTRICITY INSULATORS PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING ORDIELECTRIC PROPERTIES
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Beschreibung
Zusammenfassung:	A method for the preparation of polymer electrolytes used in rechargeable lithium intercalation cells that contain a lithium salt capable of dissociation dispersed in a polymer matrix comprising a self-supporting vinylidene fluoride/hexafluoropropylene copolymer film, comprises exchanging plasticiser in the film with a solution of the lithium salt in an organic solvent so that the polymer contains 20-70 wt.% of the lithium salt solution. The plasticiser used is stable under electrochemical conditions in the cell and is chosen from hexylene carbonate, octylene carbonate or tributyl phosphate.