Positive-electrode active material and battery including positive-electrode active material
AssigneePanasonic Intellectual Property Management Co., Ltd.
InventorsRyuichi Natsui, Junko Matsushita, Kensuke Nakura
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Abstract
A positive-electrode active material contains a compound represented by the following composition formula (1): LixMeyAzOαFβ (1) where Me denotes one or more elements selected from the group consisting of Mn, Co, Ni, Fe, Al, Cu, Nb, Mo, Ti, Cr, Zr, Zn, Na, K, Ca, Mg, Pt, Au, Ru, and W, A denotes one or more elements selected from the group consisting of B, Si, and P, and the following conditions: 1.3≤x≤2.1, 0.8≤y≤1.3, 0<z≤0.2, 1.8≤α≤2.9, and 0.1≤β≤1.2 are satisfied. A crystal structure of the compound belongs to a space group Fm-3m.
Claims11
A positive-electrode active material comprising a compound represented by a composition formula:
- LixMeyAzOαFβ, where:
- Me denotes one or more elements selected from the group consisting of Mn, Co, Ni, Fe, Al, Cu, Nb, Mo, Ti, Cr, Zr, Zn, Na, K, Ca, Mg, Pt, Au, Ru, and W;
- A denotes one or more elements selected from the group consisting of B, Si, and P;
- and
- 1.3≤x≤2.1,
- 0.8≤y≤1.3,
- 0≤z≤0.2,
- 1.8≤α≤2.9, and
- 0.1≤β≤1.2 are satisfied,
- wherein a crystal structure of the compound belongs to a space group FM-3M,
- 1≤x/(y+z)≤2.33, and
- 2.6/3≤(x+y+z)/(α+β)≤2.9/3 are satisfied.
A battery comprising:
- a positive electrode containing a positive-electrode active material;
- a negative electrode;
- and
- an electrolyte, wherein
- the positive-electrode active material comprising a compound represented by a composition formula:
- LixMeyAzOαFβ, where:
- Me denotes one or more elements selected from the group consisting of Mn, Co, Ni, Fe, Al, Cu, Nb, Mo, Ti, Cr, Zr, Zn, Na, K, Ca, Mg, Pt, Au, Ru, and W;
- A denotes one or more elements selected from the group consisting of B, Si, and P;
- and
- 1.3≤x≤2.1,
- 0.8≤y≤1.3,
- 0≤z≤0.2,
- 1.8≤α≤2.9, and
- 0.1≤β≤1.2 are satisfied,
- wherein a crystal structure of the compound belongs to a space group FM-3M,
- 1≤x/(y+z)≤2.33, and
- 2.6/3≤(x+y+z)/(α+β)≤2.9/3 are satisfied.
Dependencies are inferred from the claim text.