PROCESS FOR PRODUCING ELECTROCHEMICAL DEVICE

• Main Author: YAMAURA, KIYOSHI
• Format: Patent
• Language: English; French; Japanese
• Published: 12.08.2004
• Edition: 7
• Subjects: APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL; BASIC ELECTRIC ELEMENTS; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; ELECTRICITY; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; PERFORMING OPERATIONS; PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; SPRAYING OR ATOMISING IN GENERAL; TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION; TECHNICAL SUBJECTS COVERED BY FORMER USPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; TRANSPORTING

A process for producing an electrochemical device, by which an electrochemical device capable of enhancing of output efficiency and excelling in durabilities such as thermal durability, chemical durability and mechanical durability can be obtained. In particular, a process for producing an electrochemical device composed of a first electrode and a second electrode together with ion exchange membrane (2) interposed between these electrodes, comprising forming catalyst layer (1a) containing a catalytic substance, such as platinum, and polyvinylidene fluoride; bonding an ion exchange group, such as a sulfonic acid group, with the polyvinylidene fluoride of the catalyst layer (1a); and using the resultant ion exchange group containing catalyst layer (1b) as at least one of the first electrode and the second electrode. La présente invention concerne un procédé de production d'un dispositif électrochimique donnant un dispositif électrochimique plus efficace et se distinguant par une très bonne stabilité tant thermique, que chimique ou mécanique. L'invention concerne plus particulièrement un procédé de production d'un dispositif électrochimique constitué de deux électrodes prenant en sandwich une membrane d'échange d'ions (2). A cet effet, on réalise une couche de catalyseur (1a) contenant, d'une part une substance catalytique tel que le platine, et d'autre part un fluorure de polyvinyldiène. On lie au fluorure de polyvinyldiène de la couche de catalyseur (1a) un groupe d'échange d'ions tel qu'un groupe acide sulfonique. Enfin, on utilise pour l'une au moins des électrodes la couche de catalyseur (1b) résultante contenant le groupe d'échange d'ions.