Collector plates for bipolar electrodes of lead batteries

The invention concerns a composite plate for Pb/PbO 2 batteries with bipolar electrodes, characterized 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/km 2 .