Answer :

The accumulate lead sulfate and then convert it back into usable components helps to ensure that the battery can provide a reliable source of power over a long period of time.

In an automotive lead-acid battery, the negative plate is typically made of lead, although it may also contain small amounts of other elements such as tin, antimony, and calcium. The lead is usually in the form of a sponge-like structure that allows for a larger surface area, which helps to increase the battery's capacity.

During the charging process, lead sulfate forms on both the negative and positive plates. However, the negative plate tends to accumulate more lead sulfate than the positive plate. This is because the negative plate has a higher affinity for sulfate ions.

When the battery is charged, the lead sulfate on the negative plate is converted back into lead and sulfuric acid, which are the components needed to produce electricity. This process is known as the discharge cycle, and it is the opposite of the charging cycle.

Overall, the negative plate plays an important role in the operation of an automotive lead-acid battery.

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