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A divalent ion doped LiNi0.8Co0.2O2 solid solution, LiNi0.79Co0.20Ca0.01O2, was synthesized in air at 720℃. The structure and electrochemical property as cathode material of lithium ion batteries were measured by XRD and charge-discharge system. The solid solution showed high capacity and good cycle-ability. The second discharged capacity reached 190 mAh穏-1 at the current density of 100 mA穏-1.
A divalent doped LiNi0.8Co0.2O2 solid solution, LiNi0.79Co0.20Ca0.01O2, was synthesized in air at 720 ° C. The structure and electrochemical property as cathode material of lithium ion batteries were measured by XRD and charge-discharge system. The solid solution showed high capacity and good cycle-ability. The second discharged capacity reached 190 mAh 穏 -1 at the current density of 100 mA 穏 -1.