processo para imppressão contìnua, silmultánea ou consecutiva de uma tira de membrana de eletrólito de polìmero com camadas de eletrodo

• Main Authors: KNUT FEHL, KARL-ANTON STARZ, MANFRED DIEHL, RALF ZUBER, WOLFGANG GOETTENAUER
• Format: Patent
• Language: Portuguese
• Published: 21.09.2010
• Subjects: APPARATUS THEREFOR; APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL; BASIC ELECTRIC ELEMENTS; CHEMISTRY; ELECTRICITY; ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTIONOF COMPOUNDS OR NON-METALS; METALLURGY; 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; TRANSPORTING

Electrode layer pattern is applied onto a polymer electrolyte membrane (PEM) web by continuously printing with an ink containing an electro-catalyst and immediately drying. An electrode layer pattern is applied onto a polymer electrolyte membrane web by printing front and back faces of the membrane continuously in the desired pattern with the electrode layers using an ink containing an electro-catalyst and immediately drying at elevated temperature. Printing is carried out while maintaining accurate positions of the patterns of electrode layers of front and back faces relative to one another. Independent claims are also included for the following: (i) application of patterned electrode layers onto a polymer electrolyte membrane web by printing one side of the membrane continuously in the desired pattern with the electrode layers using an ink containing an electro-catalyst and immediately drying at elevated temperature; (ii) production of a membrane-electrode unit by placing, adhesive bonding or laminating gas distribution structures onto a printed polymer electrolyte membrane produced by one of the above processes; and (iii) a PEM fuel cell membrane-electrode unit produced as described above.