LEAD-ACID BATTERY Russian patent published in 2015 - IPC H01M10/00 

FIELD: electricity.

SUBSTANCE: essence of the claimed invention consists in new design of electrodes ensuring improved specific capacity by weight. The central parts of electrodes (bearing and current-carrying cores) are made of another light electroconductive and strong metal, not lead but aluminium for example. The above cores may be thin and made of aluminium foil. Active substances are applied to surface of the bearing cores as thin layers. With the same volume of accumulator, when thickness of the cores and layers of active substances reduces square area of electrode surfaces increases essentially thus ensuring better conditions for electrochemical reactions. In order to exclude contact of electrolyte with metal of the cores the latter are coated by additional protective and electroconductive layer, for example, of graphite. Lead-acid battery with electrodes of the suggested design looks like a thin multiply band, which may be turned into a spiral in order to optimize dimensions of the whole device.

EFFECT: increased specific capacitance.

3 cl, 4 dwg