Structure and methods of fabricating binding layers for a...

Details Structure and methods of fabricating binding layers for a... Structure and methods of fabricating binding layers for a...

H - Electricity

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H01M 2/14 (2006.01) H01M 2/16 (2006.01) H01M 2/18 (2006.01) H01M 4/62 (2006.01) H01M 4/66 (2006.01) H01M 10/40 (2006.01) H01M 4/48 (2006.01) H01M 4/50 (2006.01) H01M 4/52 (2006.01)

Patent

CA 2443260

A Li-ion polymer battery and methods for its fabrication. First (34) and second (36) layers of polymer/particulate material compositions serve to separate and bind each anode (30) and cathode (32). The polymer of the first layer and its associated solvent differ from the polymer of the second layer and its associated solvent. Solubility requirements are such that the polymer of the first layer is non-soluble in the solvent of the second layer, and the polymer of the second layer is non-soluble in the solvent of the first layer. The structure for containing the electrolyte of the battery eliminates the need for a substantial case for enclosing the battery.

L'invention concerne une batterie polymère ion-lithium et des procédés pour sa fabrication. Une première et une seconde couche, d'une composition de polymères/matières particulaires, se séparent et relient chaque anode et cathode. Le polymère de la première couche et son solvant associé diffèrent du polymère de la seconde couche et son solvant associé. Des exigences de solubilité sont telles que le polymère de la première couche est insoluble dans le solvant de la seconde couche et le polymère de la seconde couche est insoluble dans le solvant de la première couche. Les polymères et matières particulaires de ces couches forment une structure poreuse destinée à recevoir l'électrolyte de la batterie, de manière à supprimer l'utilité d'un bac de batterie.

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