, and a small amount of lithium titanate, lithium cobalt oxide, and lithium manganate batteries. "The common feature of the above-mentioned power batteries is that the positive electrode material contains a large amount of heavy metal elements, such as Co, N, Ti, Mn, Li, etc., the negative electrode material is mainly C, and the main component of the electrolyte is LiPF6. In the next few years, it will be possible to In the emerging new high-energy power batteries such as lithium sulfide batteries, the positive electrode material is mainly composed of ternary lithium, the negative electrode material may be graphite silicon, and the electrolytic raw material may be LiPS. Ni, Co, and Mn contained in these materials , Ti, Cu, Al metals and non-metallic P, S and other salt compounds may have a significant negative impact on the environment."