This results in increase of superficial area by a large extend. The main feature of construction of lead acid battery is to accommodate a large volume of active materials i.e. PbO 2 in active plate. Positive plates are usually produced by Plante Process and the plates are known as Plante Plates.
The negative lead acid battery plates are made by same process. It is seen that since active material on a Plante plate consists of a thin layer of PbO 2 formed on and from the surface of the lead plate, it must be desirable to have a large superficial area in order to get an appreciable volume of it.
In order to obtain large capacity in smaller construction of lead acid battery, a large surface must be exposed to the electrolyte, and since the size of a single plate is limited, so to increase capacity of lead acid battery, number of negative and positive plates are connected in parallel.
The construction of a lead acid battery cell is as shown in Fig. 1. It consists of the following parts : Anode or positive terminal (or plate). Cathode or negative terminal (or plate). Electrolyte. Separators. Anode or positive terminal (or plate): The positive plates are also called as anode. The material used for it is lead peroxide (PbO 2).
Lead Acid Battery Definition: A lead acid battery is defined as a rechargeable battery that uses lead and sulfuric acid to store and release electrical energy. Container Construction: The container is made from acid-resistant materials and includes features to support and separate the plates.
5.2.1 Voltage of lead acid battery upon charging. The charging reaction converts the lead sulfate at the negative electrode to lead. At the positive terminal the reaction converts the lead to lead oxide. As a by-product of this reaction, hydrogen is evolved.