Lithium-ion batteries are rechargeable batteries that rely crucially on lithium ions moving between the positive and negative terminals to work. In the process of charging and discharging, Li+ is embedded and disembedded back and forth between the two electrodes: when recharging the battery, Li+ is disembedded from the positive electrode and embedded into the negative electrode through the electrolyte, and the negative electrode is in a lithium rich state; In discharge, the opposite is true. Batteries usually use materials containing lithium as their electrodes. It is a representative of modern high performance battery.
Compared with traditional batteries such as lead-acid, nickel-chromium and nickel-hydrogen, lithium-ion batteries do not contain any toxic and harmful heavy metal elements and substances such as lead, mercury and cadmium, so they are relatively less polluted. And its electrolyte is organic solvent and lithium salt, mostly non-toxic or low toxic; However, the analysis or hydrolysis products of lithium-ion batteries are hydrofluoric acid and other fluorinated compounds, which are corrosive and toxic to some extent.
It can be seen that the battery shell is not toxic, toxic is the battery, but not all batteries are toxic, lithium ion battery is a relatively green non-toxic battery
