Fuel cell
AssigneeNok Corporation
InventorOsamu Nagai
Life of this patent
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Abstract
Unit cell 1 comprises a pair of counterposed separators 2 and 3 and a membrane-electrode assembly (MEA) provided between the separators, MEA comprising polymeric electrolyte membrane 5 having a predetermined thickness and two reactor electrode layers 4 and 4′ each with a catalyst layer sandwiching the polymeric electrolyte membrane, where the polymeric electrolyte membrane and spacer sheet 5a having a predetermined thickness are vertically sandwiched by a pair of counterposed elastic resin gasket sheets 6 and 7, thereby supporting MEA, and gaskets 8 and 9 of inverted V shape made from cured rubber are integrally formed on the outer surfaces of the gasket sheets, respectively, and brought into tight contact with inner surfaces 2a and 3a of separators 2 and 3, respectively, thereby attaining desired sealing.
Claims9
A fuel cell, which comprises a stack of a plurality of unit cells laid one upon another, the unit cell comprising a pair of counterposed separators and a membrane-electrode assembly comprising a polymeric electrolyte membrane and two reactor electrode layers each with a catalyst layer sandwiching the polymeric electrolyte membrane, the membrane-electrode assembly being provided between the separators, characterized in that the membrane-electrode assembly is sandwiched and supported by a pair of counterposed resin gasket sheets holding a spacer sheet having a predetermined thickness, and gaskets of inverted V-shape made from cured rubber, are formed on outer surfaces of the gasket sheets or inner surfaces of the separators, respectively, and brought into tight contact with the inner surfaces of the separators or the outer surfaces of the gasket sheets, respectively, thereby attaining sealing.
Dependencies are inferred from the claim text.