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US 7,745,052 B2Granted
Paste electrolyte and rechargeable lithium battery containing the same
AssigneeLG Chem, Ltd.
InventorJens M. Paulsen
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Abstract
The present invention provides a paste electrolyte comprising an organic solvent of not high dielectric constant, soluble lithium salts, and clays, with the clays being swollen by the solvent, and rechargeable lithium batteries containing the paste electrolyte. The paste electrolyte according to the present invention can improve the electrochemical properties and cycling stability of rechargeable lithium batteries by limiting the anionic transport between anode and cathode without significantly decreasing the lithium transport rate, particularly during fast charge and discharge.
Claims16
A rechargeable lithium battery comprising:
- an anode, the anode comprising an active anode material wherein the active anode material is a carbonaceous material;
- a cathode;
- and
- a paste electrolyte between the anode and cathode,
- wherein the paste electrolyte comprises:
- an organic solvent having a dielectric constant (∈) greater than 3 and less than 50;
- a soluble lithium salt;
- and
- a clay, wherein the clay is swollen and exfoliated by the solvent to form an exfoliated clay sheet.
6 more elements
Dependencies are inferred from the claim text.