Patent ID: 9318777
Filing Date: 2016-04-19
CPC Classification: H01M,Y02E

Claim Text:
1. A secondary battery comprising an electrode assembly including a cathode, an anode, a separator interposed between the cathode and the anode and an electrolyte, the secondary battery comprising a HF scavenger in the electrolyte, wherein the cathode comprises lithium manganese composite oxide with a spinel structure represented by the following Formula 2 as a cathode active material: wherein 0.9≦x≦1.2 and 0.4≦y≦0.5; wherein the anode comprises lithium titanium oxide (LTO) represented by Formula 4: wherein 0.5≦a≦3 and 1≦b≦2.5; and wherein the HF scavenger is contained in the electrolyte in an amount of 0.1% to 10%, based on the total weight of the electrolyte.