Methods of producing anodes for solid oxide fuel cells

摘要

Disclosed are methods of producing Ni/YSZ porous anode bodies for solid oxide fuel cells. According to the methods, a small amount of a nickel compound or salt is used as a pore former. Upon heating in air, the nickel compound or salt is decomposed into nickel oxide and releases gases, resulting in volume shrinkage. Therefore, Ni/YSZ porous bodies having a uniform pore size and reduction products thereof can be produced in an economical manner.

主权项

1. A method of producing a Ni/zirconia-based porous body, comprising
(a) mixing a zirconia raw material, nickel oxide, a thermally decomposable nickel salt selected from Ni(OCOCH3)2, Ni(HCOO)2, Ni(C5H7O2)2, NiCl2, [CH3(CH2)6CO2]2Ni, NiC2O4, Ni(ClO4)2, NiSO4, hydrates thereof and mixtures of two or more thereof, and a binder, (b) forming the mixture into a green body, and heat treating the green body to remove decomposable materials from the green body, (c) sintering the heat-treated green body to obtain a sintered body, and (d) reducing the sintered body.