Patent ID: 9733019
Date: 2017-08-15
CPC Classifications: B32B,C04B,F27D,H01M,Y02E,Y10T

Claim:
1. A container for heat treatment of a positive-electrode active material for a lithium-ion battery to hold raw material powder of the positive-electrode active material for the lithium-ion battery when the raw material powder is subjected to heat treatment, wherein the container comprising: a base portion comprising 60 to 95 mass % of alumina based on a total mass of the base portion and being free of MgO; and a surface portion comprising 20 to 80 mass % of spinel based on a total mass of the surface portion, formed integrally with the base portion by being compacted with the base portion via compression in a direction of lamination and firing an obtained compact, and constituting a surface of the container for contact with the raw material powder, wherein the surface portion is contained in an amount of 5 to 40 mass % based on a total mass of the container.