The most harmful is the electrolyte solution. Electrolyte is an organic volatile liquid with obvious corrosiveness. Long-term inhalation of volatile gases is harmful to respiratory tract. Cause respiratory diseases.
Lithium-ion batteries contain cadmium and have certain radiation, which will lead to osteoporosis.
The working environment may contain many harmful elements, some of which are common and others are lead. Cause heavy metal diseases.
Like all chemical batteries, lithium-ion batteries consist of a positive electrode, a negative electrode and an electrolyte. Electrode materials are all lithium ions that can be intercalated/deintercalated.
Lithium ion battery electrolyte
Solute: commonly used lithium salts, such as lithium perchlorate (LiClO4), lithium hexafluorophosphate (LiPF6) and lithium tetrafluoroborate (LiBF4). Solvent: Because the working voltage of the battery is much higher than the decomposition voltage of water, lithium-ion batteries often use organic solvents, such as ether, ethylene carbonate, propylene carbonate, diethyl carbonate and so on.
Organic solvents often destroy the structure of graphite during the charging process, leading to its peeling, and forming a solid electrolyte interface (SEI) on its surface, leading to electrode passivation. Organic solvents will also bring safety problems such as flammability and explosion.
The anode material of lithium battery is lithium cobaltate LiCoO2, ternary material Ni+Mn+Co, lithium manganate LiMn2O4 with conductive agent and adhesive, which are coated on aluminum foil to form the anode, and the cathode is layered graphite coated on copper foil baseband with conductive agent and adhesive. So far, nano-carbon has been used as more advanced cathode layered graphite particles.
References:
Baidu encyclopedia-Li-ion battery