Research progress of carbon-based lithium ion capacitor

The construction of new energy system and the rapid development of electronic equipment put forward higher requirements for energy storage devices with high energy density and high power density. Lithium-ion capacitor (LIC) is a novel storage device which based on the dual energy storage mechanism of lithium-ion battery (LIB) and electrochemical double-layer capacitor (EDLC), it can deliver higher energy density than EDLC and higher power density than LIB, it’s one of the optimum choices for hybrid electric vehicles, rail transit, smart power grids and energy engineering. In terms of future industrialization of lithium ion capacitor, carbonaceous materials seem to be the best alternative because of its advantages of abundant resources, cheapness and easy availability. This paper reviews the research progress of cathode material such as activated carbon material, anode material such as graphite material, electrolyte containing lithium ion and the preparation technology of lithium ion capacitor, and prospects the future development of lithium ion capacitor.