| 摘要 |
PURPOSE: To provide a lead-acid battery which is excellent in low temperature high efficiency discharging performance and service life performance by forming the lead acid battery by adding a cation exchange resin and lignin to a negative electrode active material. CONSTITUTION: Lignin and cation exchange resin are added to a negative electrode plate, or cation exchange resin fine powder having an average particle diameter not more than 10μm is added to the negative electrode plate instead of the lignin. The cation exchange resin is an aromatic high polymer similar to the lignin and has an action of reducing oversaturation of a Pb<2+> ion at discharging time and of restraining crystal growth by covering an active spot of an electric deposit surface of lead at charging time. Since the cation exchange resin has very large molecular weight, it is harder to be decomposed and eluted than the lignin, and can maintain an effect in the negative electrode plate up to the last period of the service life. |
