Patent ID: 11949101
Assignee: SUMITOMO CHEMICAL COMPANY LIMITED
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  C  Y | IPC C  H

Claim 0:
1. A lithium composite metal compound represented by Composition Formula (I),

Li[Lix(Ni(1-y-z)CoyMnz)1-x]O2  (I)

where M represents one or more elements selected from the group consisting of Mn, Fe, Cu, Ti, Mg, Al, W, B, Mo, Zn, Sn, Zr, Ga, Nb, and V, and −0.10≤x≤0.2, 0<y≤0.2, 0≤z≤0.2, and 0<y+z≤0.25 are satisfied,
wherein physical property values of pores that are obtained from measurement of nitrogen adsorption and desorption isotherms at a liquid nitrogen temperature satisfy requirements (1) and (2),
(1) a total pore volume determined from an amount of nitrogen adsorbed when a relative pressure (p/po) of an adsorption isotherm is 0.99 is 0.008 cm3/g or more and 0.012 cm3/g or less, and
(2) in a pore distribution determined from a desorption isotherm by a BJH method, a proportion of a volume of pores of 15 nm or less with respect to a total pore volume of 200 nm or less is less than 50%, and
wherein, in the pore distribution determined from the desorption isotherm by the BJH method, a minimum value of pore diameters at which a peak of a log differential pore volume is observed is 20 nm or more.