| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a porous electrode substrate that contains only a small number of ruptured carbon staple fibers and excels in conductivity, and to provide a method for manufacturing the same. <P>SOLUTION: A method for manufacturing a porous electrode substrate comprises the steps of: (1) manufacturing a precursor sheet where carbon staple fibers (A), and at least one of carbon-fiber precursor staple fibers (b1) and fibrillated carbon precursor fibers (b2) are dispersed in a two-dimensional plane; (2) pressing the precursor sheet under heat with a continuous heat press roll apparatus having one or more roll pairs composed of a flat roll with arithmetic average surface roughness of 2.0 μm or less, and an embossing roll with arithmetic average surface roughness of 5.0 μm or more and 20 μm or less; and (3) carbonizing the precursor sheet pressed under heat at a temperature of 1000°C or higher. A porous electrode substrate obtained by the manufacturing method is also provided. <P>COPYRIGHT: (C)2013,JPO&INPIT |
