The battery in the 21st century has the characteristics of large capacity, high power, long life, no pollution, safety, reliability and portability. one. With the advent of the information age, the information industry is developing vigorously.

Energy saving and environmental protection are the two major themes of today's world development, and countries around the world are scrambling to develop energy-saving products such as electric vehicles.

In addition, by increasing the lithium concentration in the water leachate to the maximum concentration at which the lithium in the black powder dissolves, the rate of lithium recovery is increased.