CONVERSION OF TRIBASIC LEAD SULFATE TO LEAD DIOXIDE IN LEAD-ACID-BATTERY PLATES .1. RELATIONSHIP BETWEEN THE PHASE COMPOSITIONS OF PLATES IN THE CURED AND FORMED STATES
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ZERROUAL, L
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LAB ION & ELECTROCHIM SOLIDE,F-38402 ST MARTIN DHERES,FRANCELAB ION & ELECTROCHIM SOLIDE,F-38402 ST MARTIN DHERES,FRANCE
ZERROUAL, L
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CHELALI, N
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LAB ION & ELECTROCHIM SOLIDE,F-38402 ST MARTIN DHERES,FRANCELAB ION & ELECTROCHIM SOLIDE,F-38402 ST MARTIN DHERES,FRANCE
CHELALI, N
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TEDJAR, F
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LAB ION & ELECTROCHIM SOLIDE,F-38402 ST MARTIN DHERES,FRANCELAB ION & ELECTROCHIM SOLIDE,F-38402 ST MARTIN DHERES,FRANCE
TEDJAR, F
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GUITTON, J
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LAB ION & ELECTROCHIM SOLIDE,F-38402 ST MARTIN DHERES,FRANCELAB ION & ELECTROCHIM SOLIDE,F-38402 ST MARTIN DHERES,FRANCE
GUITTON, J
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[1] LAB ION & ELECTROCHIM SOLIDE,F-38402 ST MARTIN DHERES,FRANCE
The influence of the initial amount of H2SO4 added to lead powder on the phase compositions of plates in the cured 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 H2SO4:oxidized lead powder ratio. In addition, it is found that alpha- and beta-PbO2 are formed in the lead/acid battery positive plate from 3PbO.PbSO4.H2O. The amounts of these two compounds were strongly affected when varying the quantity of H2SO4 with respect to the lead powder.