“…2 Lithium-ion capacitors (LICs) are a new type of capacitor structure based on this purpose, 3,4 which retain the high power density of supercapacitors to a certain extent and significantly improve the energy density. Compared with Li 4 Ti 5 O 12 , 5,6 Nb 2 O 5 , 7,8 Li 3 VO 4 9,10 and other metal oxide materials with the ability of rapid Li + intercalation, 11 carbon materials are still good candidates for LICs considering their significant advantages in terms of energy density, power density, long-term cycling stability, and preparation cost. These carbon materials include hard carbon, multi-walled carbon nanotubes, modified graphite, and intercalated graphite with short lithium-ion diffusion pathways in local layered carbon materials.…”