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Title:
GRAPHENE ASSEMBLY FIBER, AND PREPARATION METHOD THEREFOR AND USE THEREOF
Document Type and Number:
WIPO Patent Application WO/2023/236351
Kind Code:
A1
Abstract:
A graphene assembly fiber, and a preparation method therefor and the use thereof. An aqueous graphene oxide solution used as a spinning solution and an aqueous amine compound solution used as a coagulating bath are subjected to spinning and a reduction treatment to obtain a graphene assembly fiber. In the prior art, annealing at a very high temperature (such as 3000ºC) can eliminate atomic defects on a graphene sheet and promote the formation of graphite microcrystals, thereby improving the tensile strength. The graphene assembly fiber, and the preparation method therefor and the use thereof solve the problem of a high temperature being required for improving the mechanical performance; and the graphene fiber obtained at a low temperature presents very high mechanical properties, has a tensile strength of 3.2 ± 0.2 GPa, a Young's modulus of 290 ± 54 GPa and an electric conductivity of 1.5 * 105 S·m-1, and is one order of magnitude higher than that of a graphene fiber obtained in the prior art.

Inventors:
GENG FENGXIA (CN)
XU TIANQI (CN)
ZHANG JIAWEN (CN)
JI JINPENG (CN)
SONG ZHAOTAO (CN)
Application Number:
PCT/CN2022/113968
Publication Date:
December 14, 2023
Filing Date:
August 22, 2022
Export Citation:
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Assignee:
UNIV SOOCHOW (CN)
International Classes:
D01F9/12; C01B32/184; D01D5/06
Domestic Patent References:
WO2015163595A12015-10-29
Foreign References:
CN103741264A2014-04-23
CN103726133A2014-04-16
CN112647158A2021-04-13
CN104640809A2015-05-20
Attorney, Agent or Firm:
SUZHOU CREATOR PATENT AND TRADEMARK AGENCY, LTD (CN)
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