| abstract |
(57) [Summary] [PROBLEMS] To increase the capacity of a lithium secondary battery and increase the cycle life. SOLUTION: In a non-aqueous secondary battery composed of a positive electrode active material, a negative electrode material and a non-aqueous electrolyte, the positive electrode active material is a transition metal oxide containing lithium. A non-aqueous secondary battery using a compound containing a silicon atom and using a positive electrode active material weight larger than a negative electrode active material weight. |