Patent ID: 7255963
Filing Date: 2007-08-14
Classification: H01M,Y02E

Abstract:
1. A non-aqueous electrolyte rechargeable battery comprising: (a) a positive electrode capable of charging and discharging lithium; (b) a negative electrode capable of charging and discharging lithium; (c) a separator or a lithium ion conductive layer interposed between said positive electrode and said negative electrode; and (d) a lithium ion conductive non-aqueous electrolyte, wherein said positive electrode contains a mixture of a first positive electrode active material and a second positive electrode active material, said first positive electrode active material comprises lithium oxide containing manganese, said lithium oxide further contains aluminum and/or magnesium and said second positive electrode active material comprises Li wherein the content of the second positive electrode active material in the mixture of the first and second positive electrode active materials is 10 wt % or higher and 40 wt % or lower.