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Lithium ion batteries provide the highest gravimetric (Wh/kg) and volumetric energy density (Wh/L) among all the comparable commercially available batteries, and provide the hightest cycling variables when compared to other rechargeable batteries.

Lithium ion batteries are rechargeable and composed of cathode, anode, separator and electrolyte composed of LiPF6 or
different salts dissolved in different non aqueous solvent.

Lithium ion batteries are the potential source of rechargeable storage systems because they have the capability to provide
highest gravimetric (Wh/kg) and volumetric energy density (Wh/L).

LIB works on the rocking chair principle. The batteries consist of a cathode and anode material soaked in the electrolyte and separated by an insulator. Usually the cathode is Lithium containing transition oxide material and the anode is a carbonaceous material. During charging lithium ions leave the cathode structure and transport through the electrolyte and get intercalated into anode material. While discharging the lithium releases the electron and moves back to the cathode oxide structure.