PROCESS FOR PRODUCING A POROUS CARBON ELECTRODE SUBSTRATE FOR A FUEL CELL

摘要

A porous carbon electrode substrate for a fuel cell, which has (1) a porosity of from 50 to 80%, (2) a pore distribution rate of not less than 70%, where the pore distribution rate is the proportion (%) of the pore volume attributable to pores having a diameter of from 15 to 60 mu m relative to the total pore volume when the pore volume is measured by a mercury porosimeter, (3) a specific gas permeability of from 40 to 500 ml/cm.hr.mmAq, (4) a volume resistivity of not greater than 20 m OMEGA cm and (5) a thermal conductivity of not less than 8.37 KJ/m.hr. DEG C (2 kcal/m.hr. DEG C).