Lithium, the third element in the periodic table is the lightest metal element in nature. The lightweight nature of lithium enables the emergence of lithium magnesium alloys, a high-strength lightweight metal with excellent heat resistance, conductivity, and impact resistance. But unlike other important metals such as iron, copper, and aluminum that can be used as materials, lithium also plays multiple roles in energy and enjoys the reputation of being an "energy metal in 21st century"