BleiIVoxid

Blei(IV)oxid, also known as lead dioxide or plumbic acid anhydride, is an inorganic compound with the chemical formula PbO2. It is a dense, insoluble solid that exists in several crystalline forms, the most common being a brown or black powder. Blei(IV)oxid is a powerful oxidizing agent. It is virtually insoluble in water and most common acids and bases.

Historically, Blei(IV)oxid has found significant applications, particularly in batteries. It is a key component in lead-acid batteries, where it acts as the positive electrode material. During the discharge cycle, Blei(IV)oxid is reduced to lead(II) sulfate, while during the charging cycle, it is re-oxidized back to lead(IV) oxide. This reversible electrochemical reaction is fundamental to the operation of these widely used energy storage devices.

Beyond batteries, Blei(IV)oxid has been used as a coloring agent in ceramics and glass, imparting brown or black hues. It has also been employed as a component in some pyrotechnic compositions and as a catalyst in certain chemical reactions. However, due to the toxicity associated with lead compounds, its use in many applications has declined or is subject to strict regulations. Exposure to Blei(IV)oxid can be harmful, and appropriate safety precautions are necessary when handling it.

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