Patent ID: 8105733
Filing Date: 2012-01-31
Classification: H01M,Y02E,Y02P,Y10T

Abstract:
1. A process for producing a separator-electrode assembly comprising a porous electrode useful as a positive (cathode) or negative (anode) electrode in a lithium battery and a separator layer applied to this electrode, wherein the separator-electrode assembly comprising a current collector; a porous electrode on the current collector; and a separator layer applied to the porous electrode; the separator-electrode assembly (SEA) has an inorganic separator layer comprising at least two fractions of metal oxide particles different from each other in their average particle size and/or in the metal, and an electrode whose active mass particles are bonded together and to a current collector by an inorganic, electroconductive adhesive and the separator-electrode assembly comprises no organic polymer binder; wherein the process comprises forming the porous electrode by applying a suspension comprising active mass particles suspended in a sol or a dispersion of nanoscale active mass particles in a solvent and solidifying the suspension to form an all-inorganic porous electrode layer on the current collector by at least one thermal treatment, and forming the porous inorganic coating separator layer on the electrode substrate thus produced by applying a suspension comprising metal oxide particles in a sol and solidifying the inorganic separator layer on the electrode by at least one thermal treatment.