Cobalt has important applications in the military field. For example, it is used to manufacture high-performance batteries and provide a reliable energy supply for military equipment. In addition, cobalt is also indispensable in the production of certain special alloys, which can be used to manufacture key components of weapons and equipment to improve their performance and durability. Cobalt is one of the key materials for lithium-ion batteries. With the rapid development of electric vehicles and electronic devices, the demand for cobalt continues to grow. Cobalt can improve the energy density and stability of batteries and extend the service life of batteries. Cobalt-based high-temperature alloys have excellent high-temperature strength and oxidation resistance and are widely used in the manufacture of high-temperature components such as aircraft engines and gas turbines. In China, cobalt has been clearly listed as a strategic mineral, and this status highlights its extreme importance in national security and economic and social development. As a strategic resource, the reserves, development and utilization of cobalt are directly related to the country's long-term development and security interests. The wide application and importance of cobalt are not only reflected in its role as a key raw material for the manufacture of alloys, magnetic materials and high-tech products such as batteries, but also in its irreplaceable role in strategic emerging industries such as new energy, aerospace, and electronic information.