REINFORCED COMPOSITE MEMBRANE FOR FUEL CELL AND MEMBRANE-ELECTRODE ASSEMBLY FOR FUEL CELL COMPRISING SAME

摘要

PURPOSE: A reinforced composite membrane is stably surface contacted with an electrode as a polymer electrolyte film in a membrane-electrode assembly and to improve the performance and durability of a fuel cell in a fuel cell operation condition. CONSTITUTION: A reinforced composite membrane comprises a porous support which includes a polymer nanofiber randomly aligned and directional mechanical properties; and an ion conductor filled in the pores of the porous support. The porous support is manufactured by continuously curing the nanofiber of a polymer precursor manufactured by electrospinning a precursor solution including the polymer precursor for forming a porous support while a plurality of rollers are transferred in zigzag under the application of a rolling tension of 1-15 N. [Reference numerals] (AA) Tensile strength (MPa); (BB) Tensile strength (X); (CC) Tensile strength (Y); (DD,EE) Tensile strength ratio; (FF) Example 1; (GG) Example 2; (HH) Example 3