Vanadium is a chemical element with the symbol V and atomic number 23. It is a silvery-gray metal that is often used to strengthen steel and other alloys. This makes it important in construction and manufacturing, as it helps create materials that are more durable and resistant to wear. In addition to its use in metals, vanadium has applications in batteries, particularly in vanadium redox flow batteries. These batteries are known for their ability to store large amounts of energy, making them useful for renewable energy systems like solar and wind power.