Different possible applications have been explained and highlighted. The lithium ion capacitor (LIC) is a hybrid energy storage device combining the energy storage mechanisms of the lithium ion battery (LIB) and the electrical double-layer capacitor (EDLC), which offers some of the advantages of both technologies and eliminates their drawbacks.
Lithium-ion batteries (LIBs) and electrochemical capacitors (EC) are two important chemical energy storage devices. LIBs have high energy density but lower power density and cycle performance. EC has high power density and long cycle performance, but much lower energy density than the LIBs [ 5, 6, 7, 8 ].
However, in the present state of the art, both devices are inadequate for many applications such as hybrid electric vehicles and so on. Lithium-ion capacitors (LICs) are combinations of LIBs and SCs which phenomenally improve the performance by bridging the gap between these two devices.
Long-term cycle performance for the LIC in the voltage range of 2.2~3.8 V at 800 mA/g current density. In the chapter, lithium-ion capacitors have been assembled with prelithiated MWCNTs/graphite composite as anode and activated carbon as cathode. The results showed that LICs with prelithiated exhibit excellent electrochemical performance.
Conceptual presentation of fabrication with Li-ion capacitors. Li-ion battery (LIB) is a rechargeable energy storage device, where lithium ions are inserted and extracted into/from the negative electrode while charging and discharging (Fig. 2). The basic difference in the SC and LIB is their charge storage mechanism.
It is generally known that graphite has a high theoretical Li intercalation capacity and widely was used as anode materials for lithium-ion capacitors because of natural abundance and relatively low cost [ 26, 27, 28, 29, 30 ]. However, lithium-ion intercalation tended to the same direction, and the dynamics of lithium-ion intercalation is slow.