Vanadium(II) oxide is a chemical compound with the formula VO. It consists of vanadium in a +2 oxidation state and oxygen. This compound is typically a black or dark brown solid and is known for its magnetic properties. It is used in various applications, including as a catalyst in chemical reactions and in the production of other vanadium compounds. In addition to its industrial uses, Vanadium(II) oxide is of interest in materials science and solid-state physics. Researchers study its properties to explore potential applications in electronics and energy storage. Its unique characteristics make it a subject of ongoing scientific investigation.