TAPE SUITABLE FOR USE IN FUEL CELLS, ELECTRODE SUITABLE FOR USE IN A FUEL CELL, METHOD FOR SINTERING AN ELECTRODE OF THIS TYPE AND A FUEL CELL PROVIDED WITH AN ELECTRODE OF THIS TYPE

摘要

The invention relates to a tape suitable for use in fuel cells, to an electrode suitable for use in a fuel cell, to a method for sintering an electrode of this type and to a fuel cell which contains an electrode of this type. The invention provides a tape with improved properties, which is characterised in that said tape contains LiCoO2. A tape of this type can be produced in a manner known per se using LiCoO2 and a binder. Expediently, a plasticiser and/or dispersant and/or anti-foam is used together with the binder, as is known per se for the preparation of tapes. Platelets can be produced from such a tape, which platelets can then be sintered, optionally after stack-ing. Sintering is expediently carried out in an atmosphere consisting of 60 to 80% air and 40 to 20% carbon dioxide, in particular 68 to 72% air and 28 to 32% carbon dioxide. A suitable temperature programme is chosen for sintering. Good results are obtained by heating to 250 DEG C at a heating rate of 100 DEG C per hour, then heating to 450 DEG C at a heating rate of 50 DEG C per hour, then heating at a heating rate of 100 DEG C per hour to the desired sintering temperature of 800 to 1000 DEG C and finally, after sintering, cooling to room temperature at a rate of 100 DEG C per hour. Of course, the invention also relates to fuel cells which are provided with a material according to the invention. IMAGE