Influence of calcium sulphate in the positive material on the discharge performance of lead/acid batteries
β Scribed by C.S. Ramanathan
- Publisher
- Elsevier Science
- Year
- 1991
- Tongue
- English
- Weight
- 387 KB
- Volume
- 35
- Category
- Article
- ISSN
- 0378-7753
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β¦ Synopsis
Calcmm sulphate added to the posltlve matenal of flat or tubular plates of lead/acid battenes smcantly unproves performance at high rates of discharge, particularly at low temperatures Calcmm sulphate 1s added to the paste nux (flat plates) or blended wth the precursor oxide (tubular plates) Cycle life is unaffected, as seen by the mamtenance of the structural mtegnty of the plates This findmg 1s of practical slgnticance to battery manufacturers
π SIMILAR VOLUMES
A theoretical expression has been derived for the dependence of the discharge capacity, C, of the positive plate of the lead-acid battery, on the temperature, T, in the form dlnC/dT = (k -l)(dlnK /dT + l/T), where k is the coefficient of Peukert's equation and K is the specific conductivity of the
## In current practice, there is a steady tendency for the increase of production of sealed lead/acid batteries using lead-calcium alloys. The mastering of these alloys is, however, difficult due to debilitating phenomena taking place, the main of which is the instability of alloy composition in t
Tetrabasic lead sulphate (4BS) is only formed in battery pastes that see temperatures in excess of 70 "C. Although it is difficult to oxidise anodically, when converted to PbOz it forms the alpha-polymorph which gives the positive plate a long cycle life. This statement is a summary of what appear t
Geometric structure measurements of positive electrodes have been determined by measuring cumulative pore vohune, pore size distribution, porosity, pore specific surface area and BET specific surface area. The influence of technological parameters such as concentration of SO1\*-ions in the paste, th