초록

An amorphous material for the conduction of protons on a base of potassium hydrodisilicate contains oxometallates, bi- and trivalent metal ions and an excess of silicon dioxide and is suitable for use in fuel cells.

대표청구항 ▼

A process for producing a proton conducting material of an amorphous structure on a substrate comprising the steps of: (a) preparing a suspension made of a potassium silicate solution and a finely distributed powder having a composition relative to about one mol of potassium hydrodisilicate of about

A process for producing a proton conducting material of an amorphous structure on a substrate comprising the steps of: (a) preparing a suspension made of a potassium silicate solution and a finely distributed powder having a composition relative to about one mol of potassium hydrodisilicate of about 0 to 5 mols of one of oxometallate and oxometallate forming agents, about 0 to 0.5 mols of a trivalent metal ion in one of an oxidic bond and as an anion of a salt with approximately a same ionic radius as a silicon ion, about 0 to 0.5 mols of a bivalent metal ion as one of an oxide, hydroxide and anion of a salt with an approximately identical ionic radius as a potassium ion; and about 0 to 4 mols silicon dioxide, in which case a lower limit with two constituents can be 0; (b) applying the suspension to a substrate; (c) heating the suspension and the substrate under high pressure to temperatures between about 500°and about 800°C. at a pressure of from about 20 to about 400 bar to form a proton conducting glass layer with a substrate.