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US 11,605,814 B2Granted
Positive-electrode active material containing lithium composite oxide, and battery including the same
AssigneePanasonic Intellectual Property Management Co., Ltd.
InventorsRyuichi Natsui, Kensuke Nakura, Junko Matsushita, Issei Ikeuchi
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Abstract
A positive-electrode active material contains a lithium composite oxide containing manganese. The crystal structure of the lithium composite oxide belongs to a space group Fd-3m. The integrated intensity ratio I(111)/I(400) of a first peak I(111) on the (111) plane to a second peak I(400) on the (400) plane in an XRD pattern of the lithium composite oxide satisfies 0.05≤I(111)/I(400)≤0.90.
Claims20
A positive-electrode active material comprising
- a lithium composite oxide represented by a formula LixMeyOαQβ, where Me is Mn or Me is Mn and at least one selected from the group consisting of Co, Ni, Fe, Cu, V, Nb, Mo, Ti, Cr, Zr, Zn, Na, K, Ca, Mg, Pt, Au, Ag, Ru, W, B, Si, P, and Al;
- Q is at least one selected from the group consisting of F, Cl, N, and S;
- 1.05≤x≤1.4;
- 0.6≤y≤0.95;
- x+y=2;
- 1.33≤α≤2;
- and 0≤β≤0.67,
- wherein a crystal structure of the lithium composite oxide belongs to a space group Fd-3m, and
- an integrated intensity ratio I(111)/I(400) of a first peak I(111) on a (111) plane to a second peak I(400) on a (400) plane in an X-ray diffraction (XRD) pattern of the lithium composite oxide satisfies 0.05≤I(111)/I(400)≤0.90.
6 more elements
Dependencies are inferred from the claim text.