Patent ID: 8637191

Claim:
A lithium secondary battery including a positive electrode, a negative electrode, and a non-aqueous electrolyte solution, wherein the negative electrode comprises a negative electrode composition including a negative electrode active material, a water-dispersible binder and a conduction agent, the water-dispersible binder is included in an amount of 1 wt % to 4 wt % based on a total amount of the negative electrode composition and the conduction agent is included in an amount of 0.4 wt % based on a total amount of the negative electrode composition, wherein the non-aqueous electrolyte solution comprises 10 wt % to 15 wt % of fluoroethylenecarbonate (FEC) based on a total amount of the non-aqueous electrolyte solution and 85 wt % to 90 wt % of ethylenecarbonate (EC) based on a total amount of the non-aqueous electrolyte solution, wherein the conduction agent is carbon black, and wherein the water-dispersible binder is styrene-butadiene rubber.