Patent ID: 6187157
Filing Date: 2001-02-13
Classification: B01D,B01J,C01B,C04B,H01M,Y02E

Abstract:
A method for fabricating a multi-phase solid electrolyte ion transport material comprising a granulated first phase coated with a second phase, the first phase comprising an ionic conductor or mixed ionic/electronic conductor and having a surface consisting of a plurality of granule surfaces, the second phase comprising metal particles of at least one metal or metal oxides, the method comprising the steps of:(a) chelating metal ions in an aqueous mixture comprising a polymerizable monomer or prepolymer plus a chelating agent;(b) polymerizing said polymerizable monomer or prepolymer by heating said mixture to a temperature sufficient to cause polymerization thereof, thereby forming a precipitate-free polymeric precursor containing metal cations;(c) contacting the first phase with the polymeric precursor to form a homogeneous polymeric mixture in which at least a portion of the surface of the first phase is coated with the polymeric precursor; and(d) combusting the homogeneous polymeric mixture for a sufficient time and at a sufficient temperature to form the metal or metal oxide of the second phase and precipitate the metal or metal oxide onto the surface of the first phase.