| 摘要 |
PROBLEM TO BE SOLVED: To provide a graphite sheet having excellent properties as inter- connector plate for solid-polymer type fuel cell or the like, which is obtained by a wet sheet forming method using graphite powder, a phenol resin and a cellulosic fiber, and to provide a conductive composite sheet. SOLUTION: The graphite sheet is produced using 70-85 wt.% graphite powder having an average particle diameter of 1-30 μm, 7-20 wt.% phenol resin having a weight average molecular weight of <=100,000 and 70-20 wt.% cellulosic fiber and has a resistivity of <200 mΩ.cm and an permeability of <=1×10-4-4 cc/cm2/ sec/atm. The conductive composite sheet is obtained by laminating one or more sheets obtained by a wet sheet forming method on a metal sheet or an electroconductive forming sheet containing graphite and then firing the layers at 220-400 deg.C and under a pressure of >=5 kg/cm2 for a time of >=10 min. |
