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US 11,962,006 B2Granted
Cathode active material for lithium secondary battery and lithium secondary battery including the same
AssigneeSK On Co., Ltd.
InventorsSoo Ho Kim, Min Gu Kang, Min Suk Kang
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Abstract
A cathode active material for a lithium secondary battery according to an embodiment of the present invention includes a lithium composite oxide particle that contains lithium and transition metals including an excess amount of nickel. The lithium composite oxide particle satisfies a predetermined XRD peak area relation. A lithium secondary battery using the cathode active material and providing improved stability and durability is provided.
Claims13
A cathode active material for a lithium secondary battery comprising a lithium composite oxide particle that contains lithium and transition metals including nickel,
- wherein a molar ratio of nickel in the transition metals contained in the lithium composite oxide particle is 0.5 or more,
- wherein the lithium composite oxide particle satisfies Equation 1 and Equation 2:
- 1.0≤A(003)/A(104)≤1.5 [Equation 1]
- wherein, in Equation 1, A(003) is an area of a peak corresponding to a (003) plane in an X-ray diffraction (XRD) analysis graph, and A(104) is an area of a peak corresponding to a (104) plane in the XRD analysis graph,
- 7.0≤A(104)/A(105) [Equation 2]
- wherein, in Equation 2, A(104) is the area of the peak corresponding to the (104) plane in the XRD analysis graph, and A(105) is an area of a peak corresponding to a (105) plane in the XRD analysis graph.
3 more elements
Dependencies are inferred from the claim text.