Lithium cobalt composite oxide for lithium secondary battery and lithium secondary battery including positive electrode including the same
AssigneeSamsung SDI Co., Ltd.
InventorsYoung Jin Park, Chang Wook Kim, Eun Sung Lee
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Abstract
A lithium cobalt composite oxide for a lithium secondary battery and a lithium secondary battery, the lithium cobalt composite oxide including a magnesium (Mg)-doped lithium cobalt composite oxide having an atomic ratio of Mg to cobalt (Co) of about 0.0035:1 to about 0.01:1, wherein the Mg-doped lithium cobalt composite oxide further includes fluorine (F).
Claims17
A lithium cobalt composite oxide for a lithium secondary battery,
- wherein the lithium cobalt composite oxide is a compound represented by Formula 1 below,
- Li1−xMgxCoO2−aFa <Formula 1>
- wherein in Formula 1, 0.005≤x≤0.0075 and 0<a≤0.02.
A lithium secondary battery, comprising a positive electrode including a lithium cobalt composite oxide, wherein the lithium cobalt composite oxide is a compound represented by Formula below:
- Li1−xMgxCoO2−aFa <Formula 1>
- wherein, in Formula 1, 0.005≤x≤0.0075 and 0<a≤0.02.
Dependencies are inferred from the claim text.