Abstract

Stratification created during charge-discharge cycling in stationary lead-acid batteries supposes serious drawbacks to the system, affecting the performance, reducing the cycle efficiency and shortening lifetime. This phenomenon appears in both charge and discharge half-cycle, but it is much more important in the former. Several methods have been traditionally used to overcome this problem, especially in stand-alone installations and photovoltaic power plants. In this work the concentration gradient dependence on current rate has been studied as well as its influence on general lead-acid cell performance.

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