Sea water battery with metal cathode and method for making a...

Details Sea water battery with metal cathode and method for making a... Sea water battery with metal cathode and method for making a...

H - Electricity

01

M

H01M 6/34 (2006.01) H01M 4/06 (2006.01) H01M 4/78 (2006.01) H01M 6/04 (2006.01)

Patent

CA 2065033

This invention relates sea water cells or salt water galvanic cells or batteries which use oxygen dissolved in the sea water as oxidant, and in particular to cathodes which are suitable for cells which are exposed to high hydrodynamic forces (from waves or strong currents). The cathode (3, 12) may consist of a helix, or helically wound perforated or expanded metal plate or sheet. The cathode (20) may alternatively consist of a number of concentrical spaced apart layers of cylinders of perforated or expanded metal sheet. The number of layers of the cathode is 2-50, preferably 3-20. The layers of the cathode are spaced apart with radially arranged suitable bars, spacers, notches (4, 15, 16) or the like.

On prévoit des cellules à eau salée ou des batteries ou cellules galvaniques à eau salée qui utilisent de l'oxygène dissous dans l'eau salée comme oxydant, et notamment des cathodes adaptées aux cellules qui subissent des forces hydrodynamiques élevées (à partir de vagues ou de courants puissants). La cathode (3, 12) peut être constituée d'une hélice, ou d'une plaque ou feuille métallique étendue, perforée ou renforcée par une gaine hélicoïdale. La cathode (20) peut également être constituée d'un certain nombre de couches à espacement concentrique en feuille métallique étendue ou perforée. Le nombre de couches de la cathode est de 2 à 50, de préférence de 3 à 20. Les couches de la cathode sont espacées et possèdent des barres, des intercalations, des encoches (4, 15, 16) ou analogue appropriées et à agencement radial.

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