| 摘要 |
PURPOSE:To prevent a separator from shrinking even if discharging cycles are repeated, by constructing the separator of glass fiver and a material which swells as it absorbs liquid. CONSTITUTION:A separator is constructed of a glass fiber 1 and a liquid absorbing/swelling material 2, the glass fiber 1 being partially substituted by resin fiber. If a separator is constructed of a mat body made of only fine glass fiber, and is continuously pressurized when the body has absorbed liquid, shifts amoung fibers occur so as to shrink the thickness of the body, resulting in looseness of plate groups. If the separator is however constructed of the glass fiber 1 and the material 2 which swells after it absorbs liquid, the separator tends to swell due to the swelling property of the material 2 if it is pressurized when it absorbs the liquid, and the plate groups are thereby always pressurized with a constant force. |
