Patent ID: 7118831
Filing Date: 2006-10-10
Classification: H01M,Y02E

Abstract:
1. A lithium secondary battery comprising: (i) a cathode including a lithium-containing composite oxide, (ii) an anode having a multi-layer structure including a first layer ( (iii) a non-aqueous electrolyte composed of a mixed solvent including a first non-aqueous solvent having a specific dielectric constant of 30 or more and a viscosity of 1 cP or more and a second non-aqueous solvent having a specific dielectric constant of 10 or less and a viscosity below 1 cP in a volume ratio from 2:8 to 6:4, and dissolving therein a lithium salt in a range from 0.5 to 1.5 mol/liter.