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Title: Method of preparing thin porous sheets of ceramic material

A method of forming thin porous sheets of ceramic material for use as electrodes or other components in a molten carbonate fuel cell is disclosed. The method involves spray drying a slurry of fine ceramic particles in liquid carrier to produce generally spherical agglomerates of high porosity and a rough surface texture. The ceramic particles may include the electrode catalyst and the agglomerates can be calcined to improve mechanical strength. After slurrying with suitable volatile material and binder tape casting is used to form sheets that are sufficiently strong for further processing and handling in the assembly of a high temperature fuel cell.
Authors:
; ;
Publication Date:
OSTI Identifier:
6256776
DOE Contract Number:
AC21-79ET15440
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
30 DIRECT ENERGY CONVERSION; 36 MATERIALS SCIENCE; CERAMICS; FABRICATION; ELECTRODES; MOLTEN CARBONATE FUEL CELLS; ALUMINIUM OXIDES; BINDERS; CALCINATION; CASTING; CHEMICAL PREPARATION; COBALT OXIDES; ELECTROCATALYSTS; HIGH-TEMPERATURE FUEL CELLS; LANTHANUM OXIDES; LITHIUM OXIDES; MANGANESE OXIDES; NICKEL OXIDES; PEROVSKITES; SHEETS; SLURRIES; SPRAY DRYING; STRONTIUM OXIDES; TITANIUM OXIDES; ALKALI METAL COMPOUNDS; ALKALINE EARTH METAL COMPOUNDS; ALUMINIUM COMPOUNDS; CATALYSTS; CHALCOGENIDES; CHEMICAL REACTIONS; COBALT COMPOUNDS; DECOMPOSITION; DIRECT ENERGY CONVERTERS; DISPERSIONS; DRYING; ELECTROCHEMICAL CELLS; FUEL CELLS; LANTHANUM COMPOUNDS; LITHIUM COMPOUNDS; MANGANESE COMPOUNDS; MIXTURES; NICKEL COMPOUNDS; OXIDES; OXYGEN COMPOUNDS; PYROLYSIS; RARE EARTH COMPOUNDS; STRONTIUM COMPOUNDS; SUSPENSIONS; SYNTHESIS; THERMOCHEMICAL PROCESSES; TITANIUM COMPOUNDS; TRANSITION ELEMENT COMPOUNDS 300503* -- Fuel Cells-- Materials, Components, & Auxiliaries; 360201 -- Ceramics, Cermets, & Refractories-- Preparation & Fabrication