What is the positive plate of a lead-acid storage cell composed of?

What is the positive plate of a lead-acid storage cell composed of?

• A. Pure spongy lead
• B. A compound of lead and copper
• C. Lead peroxide
• D. None of the above

Answer: (C)

The positive plate of a lead-acid storage cell is composed of lead peroxide. In a lead-acid battery, during discharge, the lead dioxide (lead peroxide) acts as the active material of the positive electrode, while the negative plate consists of spongy lead. Lead peroxide plays a crucial role in the electrochemical reactions that occur in the battery, contributing to the overall operation and efficiency of the cell. During the charging process, lead sulfate is converted back to lead dioxide at the positive plate, essentially restoring its ability to participate in energy storage and release. This specific composition is fundamental to the battery’s function and distinguishes the lead-acid battery from other types of batteries that may use different materials.

The positive plate of a lead-acid storage cell is composed of lead peroxide. In a lead-acid battery, during discharge, the lead dioxide (lead peroxide) acts as the active material of the positive electrode, while the negative plate consists of spongy lead. Lead peroxide plays a crucial role in the electrochemical reactions that occur in the battery, contributing to the overall operation and efficiency of the cell. During the charging process, lead sulfate is converted back to lead dioxide at the positive plate, essentially restoring its ability to participate in energy storage and release. This specific composition is fundamental to the battery’s function and distinguishes the lead-acid battery from other types of batteries that may use different materials.