Cathode material and lithium ion battery
AssigneeSumitomo Osaka Cement Co., Ltd.
InventorsMasataka OYAMA, Satoru OSHITARI, Ryuuta YAMAYA
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Abstract
A cathode material including an aggregate formed by aggregating active material particles, in which the active material particle is a particle including a cathode active material as a formation material and a carbonaceous material is provided on a surface of the particle, a ratio between a weight ratio of carbon contained in the aggregate to a BET specific surface area of the cathode material is in a range of 0.08 to 0.2, a tap density is in a range of 0.9 g/cm3 to 1.5 g/cm3, and an oil absorption amount for which N-methyl-2-pyrrolidone is used is 70 cc/100 g or less.
Claims8
A cathode material comprising an aggregate formed by aggregating active material particles,
- wherein the active material particle is a particle including a cathode active material as a formation material, and a carbonaceous material is provided on a surface of the particle,
- a ratio between a weight ratio of carbon contained in the aggregate to a BET specific surface area of the cathode material is in a range of 0.08 to 0.2,
- a tap density is in a range of 0.9 g/cm3 to 1.5 g/cm3, and
- an oil absorption amount for which N-methyl-2-pyrrolidone is used is 70 cc/100 g or less.
Dependencies are inferred from the claim text.