LEAD BATTERY WITH IMPROVED PERFORMANCE

摘要

The invention concerns a lead battery with improved performance comprising: a positive electrode (1) including lead oxide as active substance; a negative electrode (3) comprising lead foam as active substance; an electrolyte (9) consisting of a sulphuric acid solution; a separating element (5, 7) between the positive electrode and the negative electrode; and means for applying a load to the whole assembly perpendicularly to the electrode plane. In said battery at least one of the elements selected among the positive electrode, the negative electrode and the electrolyte has been modified such that the amount of sulphuric acid in the positive electrode represents at least 0.20 mol of H2SO4 per mol of active substance, and/or the amount of electrolyte in the negative electrode represents at least 0.20 mol of H2SO4 per mol of active substance.