METHOD OF STORING CERIUM-CONTAINING POWDER AND CERIUM-CONTAINING POWDER STORED BY THE METHOD

摘要

PROBLEM TO BE SOLVED: To provide a method of storing a cerium-containing powder which is excellent in shelf stability, with discoloration and coloration of the cerium-containing powder during storage suppressed, a cerium-containing powder for solid oxide-formed fuel batteries stored by the storage method and a method of producing an electrolyte sheet for solid oxide-formed fuel batteries using the powder.SOLUTION: A method of storing a cerium-containing powder comprises storing a cerium-containing powder in such a state as to be covered with a packaging member of a UV ray transmissivity in the wavelength range of 280-400 nm of 30% or lower. A cerium-containing powder stored by the storage method and a method of producing an electrolyte sheet for solid oxide-formed fuel batteries using the powder are also provided.