Patent ID: 7799462

Claim:
A lithium secondary battery, comprising: an electrode assembly composed of a cathode and an anode, which are disposed opposite with respect to each other and have a separator therebetween, and a non-aqueous electrolyte containing a lithium salt, wherein an anode mix for the anode comprises an anode active material, a conductive material, a binder and 0.05 to 0.5% by weight of alumina having an average particle diameter of 10 to 400 nm, based on the total weight of the mix; and a cathode active material for the cathode is a lithium transition metal oxide; and the lithium salt is selected from the group consisting of LiCl, LiBr, LiI, LiClO 4 , LiBF 4 , LiB 10 Cl 10 , LiPF 6 , LiCF 3 SO 3 , LiCF 3 CO 2 , LiAsF 6 , LiSbF 6 , LiAlCl 4 , CH 3 SO 3 Li, CF 3 SO 3 Li, LiSCN, LiC(CF 3 SO 2 ) 3 , (CF 3 SO 2 ) 2 NLi, a lithium chloroborate, a lithium lower aliphatic carboxylate, lithium tetraphenyl borate, and a lithium imide.