Nonaqueous electrolytic solution and lithium secondary...

Details Nonaqueous electrolytic solution and lithium secondary... Nonaqueous electrolytic solution and lithium secondary...

H - Electricity

01

M

H01M 10/0566 (2010.01)

Patent

CA 2435794

In order to manufacture a lithium secondary battery having excellent performances in safety under overcharge condition, cycle property, electric capacity, and storage endurance, 0.1 wt.% to 10 wt.% of a tert-alkylbenzene compound is favorably incorporated into a non-aqueous electrolytic solution comprising a non-aqueous solvent and an electrolyte, preferably in combination with 0.1 wt.% to 1.5 wt.% of a biphenyl compound.

Cette invention concerne l'utilisation d'une solution électrolytique non aqueuse préparée en ajoutant 0,1 à 10 % en poids d'un tert-alcoylbenzène, de préférence une combinaison de ce dernier avec 0,1 à 1,5 % en poids d'un composé biphényle, à une solution d'un électrolyte dans un solvant non aqueux. On obtient ainsi une batterie secondaire au lithium présentant un haut niveau de sécurité en cas de surcharge ainsi que des caractéristiques de batterie, telles que des caractéristiques de cycle, une capacité électrique et des caractéristiques de conservation, excellentes.

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