Lithium-ion batteries are the mainstream of today's energy storage technology, and have been widely used in various types of 3C products and electric vehicles, but the lithium metal content only accounts for 006% of the earth's crust, and the demand in recent years has increased greatly, leading to an increase in the price of raw materials, plus the safety is criticized, so in addition to improving battery performance and reducing costs, there are also teams looking for batteries other than lithium.