AGGREGATE OF PARTICLES AND MANUFACTURING METHOD THEREOF

摘要

PROBLEM TO BE SOLVED: To provide an aggregate of particles where a fuel electrode or an air electrode for a solid oxide fuel cell having a large specific surface area can be manufactured by a simple and inexpensive method and to provide a manufacturing method thereof.

SOLUTION: It is characterized by that the main ingredient of the aggregate of the particles is tetragonal zirconia particles or stabilized zirconia particles having a primary particle diameter of 1 nm or more and 20 nm or less and the aggregate of the particles is porous spherical.

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