CPC C01B 32/184 (2017.08) [H05B 3/145 (2013.01)] | 13 Claims |
1. A preparation method of a directionally-arranged graphene heat-conducting foam, comprising steps of:
(a) injecting a part of a graphene oxide slurry into a tank containing an array grid, and taking out the array grid from the tank when the graphene oxide slurry is frozen to have no fluidity, to obtain a first graphene oxide;
(b) injecting the other part of the graphene oxide slurry into gaps left in the first graphene oxide after the array grid is taken out and an upper surface, freezing the graphene oxide slurry again until the graphene oxide slurry has no fluidity, and then drying to obtain a second graphene oxide; and
(c) performing carbonization and graphitization treatment on the second graphene oxide, to obtain a directionally-arranged graphene heat-conducting foam.
|