COMPOSITE POROUS MEMBRANE, METHOD FOR PRODUCING COMPOSITE POROUS MEMBRANE, SOLID POLYMER ELECTROLYTE MEMBRANE, AND FUEL CELL

摘要

Disclosed is a composite porous membrane comprising a fibrous filler-containing polymer film or sheet having multiple pores, in which each of thepores has a fibrous filler exposed thereon and is formed by irradiation withan ultra-short pulse laser having a pulse duration of 10-9 second or shorter.Also disclosed is a polymer electrolyte membrane comprising the compositeporous membrane, in which the pores are filled with a polymer electrolyte. Ahighly durable inorganic-organic or organic-organic composite porous membranecan be produced which can be made into a thin film, has a high strength, andcan reduce the crossleak amount of a fuel gas. By using the composite porousmembrane as a solid polymer electrolyte membrane, a fuel cell having improvedoutput voltage and current density can be produced.