US 11,724,940 B2
Method for forming graphene film through horizontally tiling and self-assembling graphene
Jinying Zhang, Xi'an (CN); Jialiang Huang, Xi'an (CN); Yehe Shi, Xi'an (CN); Xuewen Zhao, Xi'an (CN); and Yonghong Cheng, Xi'an (CN)
Assigned to XI'AN JIAOTONG UNIVERSITY, Xi'an (CN)
Appl. No. 17/43,702
Filed by XI'AN JIAOTONG UNIVERSITY, Xi'an (CN)
PCT Filed Nov. 14, 2018, PCT No. PCT/CN2018/115441
§ 371(c)(1), (2) Date Sep. 30, 2020,
PCT Pub. No. WO2020/093426, PCT Pub. Date May 14, 2020.
Claims priority of application No. 201811314339.3 (CN), filed on Nov. 6, 2018.
Prior Publication US 2021/0253433 A1, Aug. 19, 2021
Int. Cl. C01B 32/194 (2017.01)
CPC C01B 32/194 (2017.08) [C01B 2204/04 (2013.01); C01B 2204/22 (2013.01); C01P 2006/40 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A method for forming a graphene film through horizontally tiling and self-assembling graphene, comprising:
proportionally adding toluene and alcohol into a graphene aqueous solution to be fully and uniformly mixed;
then pouring the mixture into a vacuum filtration device, wherein when a solution in a filter flask forms a layered solution system with upper and lower layers, graphene is confined at an interface and tiled horizontally under a shear force at the interface to allow (002) planes of graphene to gradually become parallel to the interface, and graphene to be self-assembled to form the graphene film; and activating the suction filtration device to remove the solution, to obtain a graphene film with the (002) planes parallel to each other at a microscopic level on a filter paper.