Patent ID: 6458489
Filing Date: 2002-10-01
Classification: H01M,Y02E,Y02P

Abstract:
Lead-acid battery comprising:a positive electrode (1) containing lead oxide as active material, a negative electrode (3) containing lead sponge as active material, an electrolyte (9) formed of a solution of sulphuric acid, a separator element (5, 7) between the positive electrode and the negative electrode, and means for applying a stress to the assembly perpendicular to the plane of the electrodes, in which, in the charged state, the quantity of sulphuric acid in the positive electrode represents at least 0.20 mole of H2SO4 per mole of active material in the positive electrode, and/or the quantity of sulphuric acid in the negative electrode represents at least 0.20 mole of H2SO4 per mole of active material in the negative electrode, and in which the stress applied to the electrodes is 0.01 to 0.3 Mpa.