Abstract
The influence of the initial amount of H 2SO 4 added to lead powder on the phase compositions of plates in the curred and formed states has been studied. IR spectra, X-ray diffraction, scanning electron microscope observations, and wet-chemical analysis are used as techniques of investigation. It was found that the phase composition of the paste depends on the H 2SO 4:oxidized lead powder ratio. In addition, it is found that α- and β-PbO 2 are formed in the lead/acid battery positive from 3PbO·PbSO 4·H 2O. the amounts of these two compounds were strongly affected when varying the quantity of H 2SO 4 with respect to the lead powder.
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