Lithium chemical cell

H - Electricity – 01 – M

Patent

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Details

H01M 6/14 (2006.01) H01M 4/02 (2006.01) H01M 10/36 (2006.01)

Patent

CA 2175929

The invention relates to the field of electrical engineering, in particular to chemical sources of electric energy which have a lithium anode. The technical result is enhancement of the service life and assurance of safe operation. The lithium chemical source of electric energy comprises a lithium anode 1 with a porous metal plate 4 on its surface, a separator 2, a nonaqueous electrolyte solution and a cathode 3. The plate 4 may be pressed onto the surface of the anode 1 and be made of porous nickel foil 50-200 µm thick, with a porosity of 30-60% and pore size 1-200 µm.

L'invention concerne l'électrotechnique et plus spécifiquement des piles chimiques à anode au lithium. Le résultat technique se traduit par une augmentation de la durée de vie et garantit une sécurité de fonctionnement. La pile chimique au lithium de l'invention comprend une anode au lithium (1) présentant une couche de métal poreux (4) sur sa surface, un séparateur (2), une solution d'électrolyte non aqueuse et une cathode (3). La couche (4) peut être comprimée sur la surface de l'anode (1) et constituée d'une feuille de nickel poreux d'une épaisseur comprise entre 50 et 200 µm, et d'une porosité comprise entre 30 et 60 %, la grosseur des pores étant comprises entre 1 et 200 µm.

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