nikkelidioksidia

Nickel dioxide, also known as nickel(II) oxide or NiO, is an inorganic compound. It is a solid that typically appears as a green powder. Nickel dioxide is an important nickel compound and is often produced by the oxidation of nickel metal. It has a high melting point.

In terms of its chemical properties, nickel dioxide is a basic oxide, meaning it reacts with acids. It is largely insoluble in water but dissolves in acids. It can also be reduced to nickel metal. Nickel dioxide is a p-type semiconductor, meaning it conducts electricity through the movement of positive charge carriers.

Nickel dioxide has several industrial applications. It is a key component in the production of nickel-based electrodes for rechargeable batteries, particularly nickel-cadmium (NiCd) and nickel-metal hydride (NiMH) batteries. It is also used as a pigment in ceramics and glass, imparting green colors. Furthermore, nickel dioxide finds use as a catalyst in certain chemical reactions and in the manufacturing of solid oxide fuel cells. Its properties make it a versatile material in various technological and industrial processes.