The invention discloses a
graphene assisted heat dissipation battery. The battery comprises a shell, a battery core and tabs, wherein the battery core is arranged in the shell, the battery core is connected with the tabs, the tabs extends out of a hole reserved in the shell and serve as a positive
electrode and a negative
electrode of the battery, the battery core consists of a positive
pole piece, a negative
pole piece, an
ion permeable film and an insulating film, the battery core consists of an insulating film, a positive
pole piece, a diaphragm and a negative pole piece and is manufacturedby the lamination or winding process, one side, back to the diaphragm, of the positive pole piece of the battery core is coated with a
graphene film, a side, back to the diaphragm, of the negative pole piece is coated with a
graphene film, thickness of the graphene film is 300-500 nm, and a heat
conductivity coefficient of the graphene film is 4000-5000 Wm<-1>K<-1>. The preparation method of thegraphene film comprises steps of spraying graphene
oxide solution onto the positive pole piece or the negative pole piece by adopting the electric atomization technology, and then reducing graphene
oxide by using the
laser in the
nitrogen atmosphere; or spraying the graphene and ethyecellulose co-suspension onto the positive pole piece or the negative pole piece by adopting the electric atomization technology, and then heating to remove ethyecellulose. The graphene assisted heat dissipation battery has advantages of excellent heat dissipation effect and small volume occupation of a heat dissipation
system.