Cathode material for lithium-ion secondary battery
AssigneeSumitomo Osaka Cement Co., Ltd.
InventorsMasataka OYAMA, Takao KITAGAWA
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Abstract
A cathode material for a lithium-ion secondary battery including cathode active material particles which have central particles made of LixAyMzPO4 (0≦x≦1.1, 0.8≦y≦1.1, and 0≦z≦0.2; here, A represents at least one element selected from the group consisting of Fs, Mn, Co, and Ni, and M represents at least one element selected from the group consisting of Mg, Ca, Co, Sr, Ba, Ti, Zn, B, Al, Ga, In, Si, Ge, and rare earth elements) and a carbonaceous film that coats surfaces of the central particles; and inorganic phosphate salt particles.
Claims7
A cathode material for a lithium-ion secondary battery comprising:
- cathode active material particles which have central particles made of LixAyMzPO4 (0≦x≦1.1, 0.8≦y≦1.1, and 0≦z≦0.2;
- here, A represents at least one element selected from the group consisting of Fe, Mn, Co, and Ni, and M represents at least one element selected from the group consisting of Mg, Ca, Co, Sr, Ba, Ti, Zn, B, Al, Ga, In, Si, Ge, and rare earth elements) and a carbonaceous film that coats surfaces of the central particles;
- and
- inorganic phosphate salt particles.
The cathode material for a lithium-ion secondary battery according to claim ,
- wherein the inorganic phosphate salt particles contain at least one element selected from the group consisting of alkali metal and alkali earth metal, and a transition metal/phosphorus ratio (substance amount ratio) is 0.5 or less.
Dependencies are inferred from the claim text.