Is Lithium Battery Electrolyte Toxic?

As the two mainstream power batteries on the market, 18650 batteries and lithium polymer soft pack batteries are distinguished by the shell packaging material.

The 18650 battery is generally packaged in a steel casing (18 means a diameter of 18mm, 65 means a length of 65mm, and 0 means a cylindrical battery), and the structure of the internal electrode sheet and the diaphragm is wound. The outer packaging of the lithium polymer soft pack battery is made of aluminum-plastic film, and the inner electrode sheet and the separator are laminated (layer by layer).

Although the shape and internal structure are different, the principle of these two batteries is basically the same. Both batteries have a positive electrode, a negative electrode and an electrolyte. The positive electrode material is generally lithium cobalt oxide, nickel cobalt lithium manganate (ternary material), lithium iron phosphate or lithium manganate, etc. The negative electrode material is generally graphite, and the electrolyte is Lithium hexafluorophosphate solution.

Lithium battery electrolyte is the carrier of ion transport in the battery. Generally composed of lithium salts and organic solvents. The electrolyte plays the role of conducting ions between the positive and negative electrodes of the lithium battery, which is the guarantee for the lithium ion battery to obtain the advantages of high voltage and high specific energy.

The electrolyte is generally prepared from high-purity organic solvents, electrolyte lithium salts, necessary additives and other raw materials under certain conditions and in a certain proportion. So is lithium battery electrolyte toxic?

The hazards of lithium battery electrolyte:

1. The most harmful to the human body in the electrolyte is the lithium salt, lithium hexafluorophosphate. This lithium salt is very domineering. I heard that if the skin on the skin of the human body is corroded, it can be fatal.

2. The smell of electrolyte volatilization is very heavy, and this smell has a great influence on women's pregnancy.

3. The leakage of electrolyte should be quickly evacuated from the leakage contaminated area to a safe area, and isolation should be carried out to strictly restrict access. Cut off the source of ignition. It is recommended that emergency personnel wear self-contained positive pressure breathing apparatus and fire protective clothing. Cut off sources of leaks as much as possible. Prevent entry into restricted spaces such as sewers and flood drains.

Small spills: Absorb with or other inert material. It can also be scrubbed with an emulsion made of a non-flammable dispersant, which is diluted and put into the waste water system. Large spills: Construct dikes or dig pits for containment. Cover with foam to reduce vapor hazards. Transfer it to a tanker or a special collector with an explosion-proof pump, and recycle it or transport it to a waste disposal site for disposal.