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US 12,752,339 B2Granted
Method for producing Na containing oxide, and Na containing oxide
AssigneeToyota Jidosha Kabushiki Kaisha
InventorsSo Yubuchi, Jun Yoshida, Satoshi Mizutani
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Abstract
Disclosed is a Na containing oxide having a P2 type structure wherein O3 phase is reduced. A method for producing a Na containing oxide of the present disclosure comprises obtaining a precursor containing at least one element of Mn, Ni and Co, coating the surface of the precursor with a Na source to obtain a composite, and firing the composite to obtain the Na containing oxide having the P2 type structure, wherein the atmosphere in firing the composite contains 50% by volume or more of oxygen.
Claims8
A method for producing a Na containing oxide having a P2 type structure, the method comprising:
- obtaining a precursor comprising at least one element of Mn, Ni and Co,
- coating a surface of the precursor with a Na source to obtain a composite, and
- firing the composite to obtain the Na containing oxide having the P2 type structure, wherein:
- an atmosphere in firing the composite comprises 50 volume % or more of oxygen,
- when obtaining an X-ray diffraction pattern using CuKα for the Na containing oxide, a ratio IP2/IO3 of a diffraction peak intensity IP2 derived from the P2 type structure in the X-ray diffraction pattern and a diffraction peak intensity IO3 derived from an 03 type structure is 1.0 or more and 20.0 or less,
- the obtaining the precursor comprising the at least one element of Mn, Ni, and Co comprises precipitating the precursor, and
- the coating the surface of the precursor with the Na source comprises spray drying.
4 more elements
Dependencies are inferred from the claim text.