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AssigneeSumitomo Chemical Company, Limited
InventorsCedric Pitteloud, Yuichiro Imanari, Kenji Nakane
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A lithium mixed metal oxide comprising Ni, Mn and Fe and having a BET specific surface area of 2 m2/g or more and 30 m2/g or less. A method of producing a lithium mixed metal oxide, comprising bringing an aqueous solution containing Ni, Mn, Fe and Cl into contact with an alkali to obtain a coprecipitate, and calcining a mixture of the coprecipitate and a lithium compound by maintaining the mixture at a temperature of lower than 900° C. A positive electrode active material for nonaqueous electrolyte secondary battery, comprising the lithium mixed metal oxide described above or the lithium mixed metal oxide obtained by the method of producing a lithium mixed metal oxide described above as a main ingredient. A positive electrode for nonaqueous electrolyte secondary battery having the positive electrode active material for nonaqueous electrolyte secondary battery described above. A nonaqueous electrolyte secondary battery having the positive electrode for nonaqueous electrolyte secondary battery described above.
A lithium mixed metal oxide comprising Ni, Mn and Fe and having a BET specific surface area of 2 m2/g or more and 30 m2/g or less.
A method of producing a lithium mixed metal oxide, comprising bringing an aqueous solution containing Ni, Mn, Fe and Cl into contact with an alkali to obtain a coprecipitate, and calcining a mixture of the coprecipitate and a lithium compound by maintaining the mixture at a temperature of lower than 900° C.
A coprecipitate obtained by bringing an aqueous solution containing Ni, Mn, Fe and Cl into contact with an alkali, wherein a diffraction peak (diffraction peak A) is present in the range of diffraction angle 2θ of 17° or more and 20° or less, in a powder X-ray diffraction pattern obtained by powder X-ray diffractometry using CuKα as a radiation source and in which the measurement range of diffraction angle 2θ is 10° or more and 45° or less.
Dependencies are inferred from the claim text.