Hydrothermal solidification of Β-PbO2 and lead powder
Using Β-PbO2 and PbO, a new type of positive plate for lead acid battery has been investigated. The paste consisting of PbO2 and lead powder was easily solidified under hydrothermal conditions of 150‡C. The bonding material, PbOx (OH)ynH2O, here x=1.5–2, y=0–0.5, was formed among PbO2 and PbO particles during solidification under hydrothermal conditions. This new phase has a needle-like morphology. The hydrothermally formed positive plate is tough and the solidified body was contacted strongly to the grid of the lead alloy. The needle-like bonding material of basic lead oxide hydrate disappeared after the charging and discharging process. This hydrothermal process has two characteristics as follows: the curing process need not take a long time and waste batteries can be recycled.
KeywordsHydrate Oxide Hydrate Material Processing Discharge Process Hydrothermal Process
Unable to display preview. Download preview PDF.