Acid stratification
The acid stratification in the lead accumulator , also called acid restratification or electrolyte stratification, describes a chemical reaction in which the active material is detached in the upper part of the positively charged plate, while sulphation occurs in the lower half . The acid stratification occurs in particular in cyclical operation, but can also occur in partial cycles. When lead batteries are discharged, the sulfuric acid is bound and water is created as a residual product, while charging, on the other hand, consumes water and releases the sulfuric acid. To the through electrolytes to minimize resulting acid stratification and to extend the battery life that can electrolyte circulation can be used. This admixing of passive mixing elements leads to a homogenization of the electrolyte and thus to an up to six times longer service life.
Individual evidence
- ^ Varta: lead accumulator, VDI-Verlag, ISBN 3-18-400534-8
- ↑ Ruetschi Paul: Instructions for the optimal handling of batteries to extend their service life; Lecture by M. Pulfer; 2003
- ↑ Ebner, E., Wark, M. and Börger, A. (2011), Passive mixing elements for electrolyte convection in lead-acid wet batteries. Chemical Engineer Technology, 83: 2051-2058.