Lamination process for manufacture of integrated...

H - Electricity – 01 – M

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H01M 8/10 (2006.01) C25B 9/10 (2006.01)

Patent

CA 2571307

A process for manufacture of integrated membrane-electrode-assemblies (MEAs), which comprise an ionomer membrane, at least one gas diffusion layer (GDL), at least one catalyst layer deposited on the GDL and/or the ionomer membrane, and at least one protective film material is disclosed. The components are assembled together by a lamination process comprising the steps of heating the components to a temperature in the range of 20 to 250 ~C and la~minating the materials by applying a laminating force in the range of 50 to 1300 N with a pair of rolls. The claimed lamination process is simple and inexpensive and is used for manu~facture of advanced, integrated MEAs for electrochemical devices such as PEM fuel cells and DMFC.

L'invention concerne un procédé pour fabriquer des ensembles d'électrodes à membrane intégrée (MEA) comprenant une membrane ionomère, au moins une couche de diffusion gazeuse (GDL), au moins une couche catalytique déposée sur la GDL et/ou sur la membrane ionomère, et au moins un matériau en film protecteur. Les composants sont assemblés par un processus de laminage comprenant le chauffage des composants à une température comprise entre 20 et 50 °C et le laminage des matériaux par application d'une force de laminage comprise entre 50 et 1300N au moyen d'une paire de cylindres. Le processus de laminage est simple et peu coûteux et il est utilisé dans la fabrication d'ensembles d'électrodes à membrane intégrée pour des dispositifs électrochimiques tels que des piles à combustible PEM et une DMFC.

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