Synthesis and electrochemical preformances of tribasic and tetrabasic lead sulfates prepared by reactive grinding

Tribasic lead sulfate (3BS) and tetrabasic lead sulfate (4BS), used as precursors of the positive active material in the lead/acid batteries, were prepared by a new method: reactive grinding. The effects of various experimental parameters (stoichiometry, hygrometry of the starting compounds, duratio...

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Bibliographic Details
Published in:Journal of power sources 1998-04, Vol.72 (2), p.126-131
Main Authors: Grugeon-Dewaele, S, Laruelle, S, Joliveau-Vallat, F, Torcheux, L, Delahaye-Vidal, A
Format: Article
Language:English
Subjects:
Applied sciences
Direct energy conversion and energy accumulation
Electrical engineering. Electrical power engineering
Electrical power engineering
Electrochemical conversion: primary and secondary batteries, fuel cells
Exact sciences and technology
Lead sulfate
Reactive grinding
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Summary:Tribasic lead sulfate (3BS) and tetrabasic lead sulfate (4BS), used as precursors of the positive active material in the lead/acid batteries, were prepared by a new method: reactive grinding. The effects of various experimental parameters (stoichiometry, hygrometry of the starting compounds, duration of mechanical treatment) upon the nature and morphological features of the resulting phase were investigated. Among them, hygrometry turned out to be the most critical one. With water in excess, only 3BS was produced while dry reagents led to 4BS. In both cases, samples with a small particle size and high reactivity were obtained. In order to evaluate the influence of the morphology upon the electrochemical performances of such grinding produced samples, the capacity was measured and compared with that of traditional 3BS and 4BS samples.
ISSN:0378-7753
1873-2755
DOI:10.1016/S0378-7753(97)02697-9