Lead dioxide (PbO₂) is a chemical compound that occurs as a dark brown to black crystalline solid. Lead is in the +4 oxidation state in lead dioxide.
features：
Lead dioxide typically appears as a dark brown to black crystalline solid. This characteristic color is often used to identify its presence.
Applications:
Lead dioxide serves as the positive plate material in lead-acid batteries. It plays a crucial role in the electrochemical reactions that occur during both the discharge and recharge cycles of the battery. Lead-acid batteries are commonly used in automotive, uninterruptible power supply (UPS) systems, and other applications.
