Method of producing fuel cell-use separator and device for...

Details Method of producing fuel cell-use separator and device for... Method of producing fuel cell-use separator and device for...

H - Electricity

01

M

H01M 8/02 (2006.01) H01M 8/04 (2006.01)

Patent

CA 2468510

A method of producing a fuel cell-use separator comprising the abnormal layer removing step of removing an abnormal layer appearing in the front layer when a separator-use metal material is rolled, the conductor exposing step of allowing part of a conductor contained in the front layer portion of the metal material itself to project, and the passivating step of passivating the front layer portion of the metal material itself. Removing an abnormal layer in the abnormal layer removing step and removing the front layer portion of a metal material in the conductor exposing step can be done chemically and electrochemically by the same treatment, thereby reducing the number of treating steps, and improving the productivity and reducing the costs of a separator.

L'invention concerne un procédé de réalisation de séparateur d'usure pour pile à combustible, qui comprend les étapes suivantes: élimination de la couche anormale (91) apparaissant dans la couche frontale lorsqu'un matériau métallique d'usure pour séparateur (20) est plaqué; exposition d'une partie d'un conducteur (92) logé dans la couche frontale du matériau métallique proprement dit; et passivation de la couche frontale du matériau métallique proprement dit. L'élimination de la couche anormale et l'élimination de la couche frontale d'un matériau métallique, propres aux deux premières étapes, peuvent s'effectuer chimiquement et électrochimiquement par le même traitement, ce qui réduit le nombre de phases de traitement, améliore la productivité et abaisse les coûts de réalisation d'un séparateur.

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