US 11,851,331 B2
Directionally-arranged graphene heat-conducting foam, directionally-arranged graphene heat-conducting film, preparation methods of directionally-arranged graphene heat-conducting foam and directionally-arranged graphene heat-conducting film, and electronic product
Zhenliang Hao, Guangdong (CN); and Jinming Cai, Guangdong (CN)
Assigned to GUANGDONG MORION NANOTECHNOLOGY CO., LTD., Guangdong (CN)
Appl. No. 18/044,608
Filed by GUANGDONG MORION NANOTECHNOLOGY CO., LTD., Guangdong (CN)
PCT Filed Jun. 23, 2022, PCT No. PCT/CN2022/100773
§ 371(c)(1), (2) Date Mar. 9, 2023,
PCT Pub. No. WO2023/060933, PCT Pub. Date Apr. 20, 2023.
Claims priority of application No. 202111197031.7 (CN), filed on Oct. 14, 2021.
Prior Publication US 2023/0242403 A1, Aug. 3, 2023
Int. Cl. C01B 32/184 (2017.01); H05B 3/14 (2006.01)
CPC C01B 32/184 (2017.08) [H05B 3/145 (2013.01)] 13 Claims
OG exemplary drawing
 
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.