| 摘要 |
A lithium secondary battery comprising: a cathode including, as an active material, a material that can be doped/undoped with lithium ions; an anode including, as an active material, a lithium metal, a lithium alloy or a material that can be doped/undoped with lithium ions; and a liquid or solid electrolyte, wherein lithiated nickel dioxide containing aluminum is used as said cathode active material, and wherein the molar ratio x of aluminum to the sum of aluminum and nickel in said lithiated nickel dioxide containing aluminum is in the range of 0.10<x<0.20. The lithium secondary battery has an excellent cycle characteristic even in cycles of charging/discharging processes at a high capacity and an enhanced safety in a charged state. |
