초록 ▼

Stable high conductivity functionally gradient compositionally layered solid bodies suitable for use as electrolytes and membranes and providing improved oxygen-ion conductivity for electrolytes and improved mixed oxygen-ion and electronic conductivity for membranes. The electrolytes provide solid o

Stable high conductivity functionally gradient compositionally layered solid bodies suitable for use as electrolytes and membranes and providing improved oxygen-ion conductivity for electrolytes and improved mixed oxygen-ion and electronic conductivity for membranes. The electrolytes provide solid oxide fuel cells with high efficiency operation at 300.degree. to 800.degree. C.

대표청구항 ▼

[ We claim:] [1.] A stable high conductivity compositionally layered solid body comprising: a dense functionally gradient first conducting layer having a first function which is chemically stable in the environment of a first gas, said first conducting layer in contact with a dense functionally grad

[ We claim:] [1.] A stable high conductivity compositionally layered solid body comprising: a dense functionally gradient first conducting layer having a first function which is chemically stable in the environment of a first gas, said first conducting layer in contact with a dense functionally gradient second conducting layer having a second function which is chemically stable in the environment of a second gas which renders said first conducting layer chemically unstable, said functional gradients being due to a chemical gradient across each of said first conducting layer and said second conducting layer, said first conducting layer and said second conducting layer having relative thicknesses to achieve an interface at which chemical stability of each layer may be achieved, due to the chemical gradients across the layers.