Separating plate for fuel cell

Abstract

Abstract PURPOSE:To provide a fuel cell separating plate having high airtightness, electric conductivity and cemical resistance similar to graphite by stacking expansion graphite sheets and press-molding them. CONSTITUTION:Expansion graphite having a bulk density of 0.001-0.02g/cm<3> is used for forming an expansion graphite sheet. The expansion graphite powder is pressed by a press or a roller to form an expansion graphite sheet. The expansion graphite sheet having a bulk density of 0.1-0.5g/cm<3> is preferable. The thickness of the sheet is adjusted to a level of 0.2mm. to several mm.rs depending on the thickness of a separating plate. Sheets are stacked according to density and thickness of a separating plate, set in a die, then pressed at a pressure of 100- 1,000kg/cm<2> for 3-10min to form separating plate.

Inventors

• 👤 Kazuo Yamada
• 👤 和夫 山田
• 👤 Yoshihiro Kikuchi
• 👤 菊池　好洋
• 👤 Atsushi Fujita
• 👤 淳 藤田

Bibliographic Details