Collector plates for bipolar electrodes in lead batteries

Details Collector plates for bipolar electrodes in lead batteries Collector plates for bipolar electrodes in lead batteries

H - Electricity

01

M

H01M 4/14 (2006.01) H01M 10/18 (2006.01) H01M 4/02 (2006.01) H01M 4/66 (2006.01)

Patent

CA 2335727

The invention concerns a composite plate for Pb/PbO¿2? batteries with bipolar electrodes, characterised by unidirectional electronic conduction provided by metal wires made at least at the surface of lead or lead alloy, arranged in a regular array and coated with a polymer, stable in an acid medium and capable of generating a strong bonding with the lead or lead alloy constituting the wire surface- the wire volume representing only at most 4 % of the plate total volume at most. Hence the mass per unit area thereof remains of the order of 15 g/dm?2¿.

La plaque composite destinée aux accumulateurs Pb/PbO2 à électrodes bipolaires est caractérisée par une conduction électronique monodirectionnelle donnée par des fils métalliques constitués au moins superficiellement de plomb ou d'alliage de plomb, disposés suivant un réseau régulier et enrobés par un polymère, stable en milieu acide et pouvant créer une liaison forte avec le plomb ou l'alliage de plomb constituant la surface des fils - le volume des fils ne représentant qu'au plus 4 % du volume total de la plaque. La masse surfacique de cette dernière reste ainsi de l'ordre de 15 g/dm2.

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