Gas diffusion electrode assembly, bonding method for a gas diffusion electrode assembly and electrolytic bath wtih the electrode

• Main Authors: SAIKI KOJI, ICHINOSE OSAMU, OSAKABE TSUGIYOSHI, HAMAMORI MITSUHARU, AIKAWA HIROAKI, KATAYAMA SHINJI, KIMURA TATSUHITO, NONOMURA KENJI, OKADA NAOYA, ASAUMI KIYOHITO
• Format: Patent
• Language: Chinese; English
• Published: 22.09.2010
• Subjects: APPARATUS THEREFOR; BASIC ELECTRIC ELEMENTS; CHEMISTRY; ELECTRICITY; ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTIONOF COMPOUNDS OR NON-METALS; METALLURGY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

In a gas diffusion electrode assembly, and in an electrolyzer using the same, a bonding piece having on at least one surface a perfluorosulfonic acid layer, a perfluorosulfonyl fluoride layer or an alky ester of perfluorocarboxylic acid layer is positioned at its perfluoro compound layer surface with respect to the gas diffusion electrode assembly. Adjacent gas diffusion electrodes are heat fusion bonded together, or heat fusion bonding is carried out using the bonding piece in a frame form. Adjacent gas diffusion electrodes are sealed up by heat fusion bonding, using a material that is similar to the material that forms the gas diffusion electrodes.