Positive electrode active material for secondary batteries, and secondary battery
AssigneePanasonic Energy Co., Ltd.
InventorsJin ZHANG, Motoharu SAITO, Mitsuhiro HIBINO, Kensuke NAKURA
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Abstract
A positive electrode active material for secondary batteries includes a lithium metal composite oxide having a crystal structure that can be attributed to the space group Fm-3m. The lithium metal composite oxide contains at least Li, Mn, Ti, and M. The M is a positive element different from Li, Mn, and Ti. The crystallite size of the lithium metal composite oxide is in a range of 1 nm to 100 nm, or in an X-ray diffraction (XRD) profile using CuKα radiation of the lithium metal composite oxide, the half-value width of a diffraction peak attributed to the (200) plane is in a range of 0.10 to 1.8°, based on 2θ.
Claims10
A positive electrode active material for secondary batteries, comprising:
- a lithium metal composite oxide having a crystal structure that can be attributed to a space group Fm-3m, wherein
- the lithium metal composite oxide contains at least Li, Mn, Ti, and M,
- the M is a positive element different from Li, Mn, and Ti, and
- a crystallite size of the lithium metal composite oxide is in a range of 1 nm to 100 nm, or
- in an X-ray diffraction (XRD) profile using CuKα radiation of the lithium metal composite oxide, a half-value width of a diffraction peak attributed to a (200) plane is in a range of 0.1° to 1.8°, based on 2θ.
Dependencies are inferred from the claim text.