A rechargeable battery is provided such that the positive electrode comprises lead, the negative electrode zinc, and the electrolyte is an aqueous solution of an alkali metal sulphate. Upon discharge, lead dioxide is reduced to lead sulphate and zinc is ox...

A rechargeable battery is provided such that the positive electrode (1) comprises lead dioxide, the negative (2) electrode zinc, and the electrolyte (4) is alkaline. Upon discharge, the lead dioxide is reduced to lead oxide, the zinc is oxidized to zinc ox...