NEW GAS DIFFUSION LAYERS FOR FUEL CELLS AND METHOD FOR OBTAINING THEM

NEW GAS DIFFUSION LAYERS FOR FUEL CELLS AND METHOD FOR OBTAINING THEM

The present invention relates to a GDL for PEM- fuel cells formed by a macroporous substrate layer (MPS) and a microporous carbon layer (MPL), the MPS being formed by carbon fibers and plant fibers, wherein the plant fibers mainly comprise esparto fibers. Likewise, the procedure for manufacturing th...

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Hauptverfasser: JERÉZ NAVARRO, Andrés, LÓPEZ CASCALES, José, Javier
Format: Patent
Sprache:eng ; fre ; ger
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BASIC ELECTRIC ELEMENTS
ELECTRICITY
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
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creator JERÉZ NAVARRO, Andrés
LÓPEZ CASCALES, José, Javier
description The present invention relates to a GDL for PEM- fuel cells formed by a macroporous substrate layer (MPS) and a microporous carbon layer (MPL), the MPS being formed by carbon fibers and plant fibers, wherein the plant fibers mainly comprise esparto fibers. Likewise, the procedure for manufacturing the GDLs is provided, which comprises: a) Generation of a paper-carbon pulp, using esparto plant fibers, b) Filtering; c) Homogenization; d) Cold pressing and compaction of the paper-carbon film; e) Curing the paper-carbon film at room temperature for a minimum period of 12 hours, f) Generation of the MPS by thermal treatment of the cured paper-carbon film at temperatures not exceeding 1,050°C; g) Obtaining the MPL layer; h) Application of a 2% perfluoroexane aqueous solution to the GDL obtained and subsequent curing process at 100-150 °C for 10-20 minutes.
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subjects BASIC ELECTRIC ELEMENTS
ELECTRICITY
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
title NEW GAS DIFFUSION LAYERS FOR FUEL CELLS AND METHOD FOR OBTAINING THEM
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