Patent ID: 7651815
Filing Date: 2010-01-26
Classification: H01M,Y02E,Y02P

Abstract:
1. A lithium secondary battery comprising a positive electrode and a negative electrode both capable of occluding and releasing lithium ions, and a lithium ion conductive material, the lithium ion conductive material containing a non-aqueous electrolysis solution comprising propylene carbonate and a compound of the following formula (1): wherein n is an integer of 0 or 1, each of R 1 , R 2 , R 3 and R 4 is hydrogen or an alkyl group of 1 to 5 carbon atoms, wherein the positive electrode has a positive electrode active material, which material contains a lithium-containing transition metal oxide, and wherein the constituent material of the negative electrode comprises a carboxyl group-bearing compound as a portion thereof.