SOME STRUCTURAL AND TEXTURAL ASPECTS OF TRIBASIC LEAD SULFATE PRECIPITATION DURING THE MIXING OF LEAD-ACID-BATTERY POSITIVE PASTE

Citation
F. Vallatjoliveau et al., SOME STRUCTURAL AND TEXTURAL ASPECTS OF TRIBASIC LEAD SULFATE PRECIPITATION DURING THE MIXING OF LEAD-ACID-BATTERY POSITIVE PASTE, Journal of the Electrochemical Society, 142(8), 1995, pp. 2710-2716
Citations number
18
Categorie Soggetti
Electrochemistry
ISSN journal
00134651
Volume
142
Issue
8
Year of publication
1995
Pages
2710 - 2716
Database
ISI
SICI code
0013-4651(1995)142:8<2710:SSATAO>2.0.ZU;2-S
Abstract
The reaction between PbO and H2SO4 in water leading to the formation o f tribasic lead sulfate hydrate was studied using pH measurements, x-r ay diffraction, scanning and transmission electron microscopy, and inf rared spectroscopy. We examined the effect of different parameters suc h as temperature, starting composition, Pbo source, order of the mater ials addition, and presence of carbonates, on PbO-H2SO4 reaction. From this study, a mechanism is proposed for the reaction. It explains why , by mixing PbO and H2SO4 in water, the tribasic lead sulfate cannot b e obtained as a pure phase. Some unreacted PbO always remains at the e nd of the reaction.