The invention discloses a quick-charging
polymer lithium ion battery based on carbon-based nanometer materials. An
anode sheet of the battery is prepared by mixing
anode active substances, carbon-based nanometer material
graphene /
carbon nanotube compound conductive agents, conductive
graphene and PVDF according to a certain
mass ratio, adopting an NMP as a
solvent, conducting pulping by means ofa sand mill with
zirconium beads and a vacuum high-speed blender and then
coating aluminum foil with obtained pulp. A
cathode sheet is prepared by mixing
cathode active substances, carbon-based nanometer material
graphene /
carbon nanotube compound conductive agents, nanoscale conductive
carbon black, CMC and SBR according to a certain
mass ratio, adopting deionized water as a
solvent, conducting pulping and
coating a
copper foil
current collector with obtained pulp. The
anode sheet and the
cathode sheet are wound with a partition membrane, packaged, injected with liquid, formed by a high-temperature fixture and subjected to air exhaust, volume distribution and the like, and then the quick-charging
polymer lithium ion battery is obtained. The volume
energy density of the battery is 460 Wh / Lor above, the
battery capacity can be charged to 60% or above within 10 min, and the battery has excellent 3C charging performance, great 1C discharging fast-charge
cycling performance and remarkable1C charge-
discharge cycling performance.