Electrolyte composition and cell

Details Electrolyte composition and cell Electrolyte composition and cell

C - Chemistry, Metallurgy

08

L

C08L 71/00 (2006.01) C08K 3/10 (2006.01) C08K 5/1565 (2006.01) C08L 71/02 (2006.01) H01G 9/035 (2006.01) H01M 4/40 (2006.01) H01M 10/40 (2006.01)

Patent

CA 2522234

An electrolyte composition characterized by comprising: (1) a polymer having an ether bond as an optional ingredient; (2) an additive comprising an ether compound having ethylene oxide units as an optional ingredient; (3) a lithium salt compound; and (4) a cyclic carbonate having an unsaturated group. The electrolyte composition is excellent in processability, moldability, mechanical strength, flexibility, heat resistance, etc. and has significantly improved electrochemical properties with respect to action on lithium metal.

L'invention concerne une composition d'électrolyte caractérisée en ce qu'elle comprend : (1) un polymère comportant une liaison éther comme constituant optionnel ; (2) un additif comprenant un composé éther comportant des unités d'oxyde d'éthylène comme constituant optionnel ; (3) un composé de sel de lithium ; et (4) un carbonate cyclique comportant un groupe insaturé. Ladite composition d'électrolyte est excellente en termes d'aptitude au traitement, de moulabilité, de résistance mécanique, de flexibilité, de thermorésistance, etc. et présente des propriétés électrochimiques sensiblement améliorées pour ce qui est de l'action sur le métal lithium.

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