| 摘要 |
Provided is a method for forming a diffusion layer for a fuel cell, wherein the diffusion layer has excellent mechanical and electrical properties and uniform pores, supplies fuel and air smoothly, is capable of controlling even moisture, and reduces the volume of a total system. The method for forming a diffusion layer for a fuel cell comprises the steps of: using, as a carbon fiber precursor, at least one selected from polyacrylonitrile(PAN), phenol, and pitch, a mixture thereof, or a compound with a nano-size material to prepare a spinning solution; applying high voltage to the spinning solution to perform electrospinning; subjecting the electrospun material to oxidation stabilization under an air atmosphere; carbonizing the elecrospun material at 500-1500°C to obtain nanocomposite carbon fiber and subjecting the nanocomposite carbon fiber to water repelling treatment; and using the obtained nanocomposite carbon fiber as a gas diffusion layer of a fuel cell. |
