FUEL CELL

• Main Authors: HEIBER, UWE, KRAUSE, KARL-HEINZ, BRUDER, MICHAEL, MERKMANN, GERHARD
• Format: Patent
• Language: English; French; German
• Published: 24.03.2004
• Edition: 7
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; BASIC ELECTRIC ELEMENTS; CHEMISTRY; COMPOSITIONS BASED THEREON; ELECTRICITY; GENERAL PROCESSES OF COMPOUNDING; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; THEIR PREPARATION OR CHEMICAL WORKING-UP; WORKING-UP

The invention relates to a fuel cell (1) comprising at least the following components: a proton-conducting polymer membrane (2) acting as the electrolyte, catalyst layers (3) that cover the polymer membrane (2) on both sides, gas-permeable electrodes in the form of an anode (4) and a cathode (5) which rest on a surface of the catalyst layers (3), whereby said surface is directed towards the outside, electroconductive plates (6) which contact the electrodes in an electroconductive manner and at closely adjacent distances and, together with the electrodes, define gas-conducting channels as well as gas supplies for the supply of hydrogen (H2) on the one hand and oxygen (O2) on the other hand. The inventive fuel cell (1) is characterised in that the polymer membrane (2) is a vulcanised caoutchouc mixture on the basis of a halogenated caoutchouc, especially when bromobutyl caoutchouc is used. The invention also relates to advantageous variants of the polymer membrane (2), e.g. when the caoutchouc mixture contains a molecular sieve/acid adduct.