No abstract

No abstract

No abstract

No abstract

No abstract

For improvement of the discharge performance of pasted-type lead-acid batteries for cycle service use, anisotropic graphite is added to the positive paste, and its effect on the discharge performance of the positive plates has been examined. The 6apacity of the positive plates increased remarkably and also cycle life was improved by the addition of graphite. These effects can be attributed to the increase in porosity of the positive active mass due to expansion of the graphite by anodic oxidation.

2. Trace Te in a lead-acid battery acts catalytically to generate hydrogen gas during charging.3. Trace Sb and As increase the intensity of leadacid battery gassing by reducing the lead electrode hydrogen overpotential. During cycling, this gassing rate is more sustained in presence of Sb than As.4. Increased lead-acid battery gassing behavior in the presence of trace Co and Ni is more due to their role in reducing oxygen overvoltage of the lead dioxide electrode than their influence on the lead electrode hydrogen overvoltage. Presence of Co in the test solution causes more gassing in the lead-acid battery than the presence of Ni in the te~t solution.

No abstract