Electrolyte For Lithium-ion Batteries

Solute: lithium salts are often used, such as lithium perchlorate (LiClO4), lithium hexafluorophosphate (LiPF6), 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, etc. Organic solvents often destroy the structure of graphite when charging, causing it to peel off, and the formation of a solid electrolyte interphase (SEI) on its surface leads to electrode passivation. Organic solvents also bring flammable, explosive and other safety issues.