Polyfluorinated boron cluster anions for lithium electrolytes

Details Polyfluorinated boron cluster anions for lithium electrolytes Polyfluorinated boron cluster anions for lithium electrolytes

C - Chemistry, Metallurgy

01

B

C01B 35/18 (2006.01) C07F 1/02 (2006.01) C01D 15/00 (2006.01) H01M 10/36 (2006.01)

Patent

CA 2479589

The present invention relates to an improvement in lithium secondary batteries comprised of a negative electrode, a positive electrode, a separator, and a lithium-based electrolyte carried in an aprotic solvent and to the electrolyte compositions. The improvement resides in the use of a lithium salt of the formula: Li2B12F x Z12-x wherein x greater than or equal to 4 and Z represents H, Cl, and Br.

La présente invention concerne une amélioration à des piles au lithium composées d'une électrode négative, d'une électrode positive, d'un séparateur et d'un électrolyte à base de lithium transporté dans un solvant aprotique; elle concerne aussi les compositions électrolytiques. L'amélioration réside dans l'utilisation d'un sel de lithium de formule Li2B12FxZ12-x, où x est supérieur ou égal à 4, et Z est de l'H, du Cl et du Br.

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