Title:
INDEPENDENT SELF-SUPPORTING GRAPHENE FILM AND PREPARATION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2019/071943
Kind Code:
A1
Abstract:
A preparation method for an independent self-supporting graphene film, the graphene film being obtained by means of filtration of graphene oxide into a film, solid phase transfer, chemical reduction and the like steps. The graphene film is formed by means of physical cross-linking of a single layer of oxidized/reduced graphene oxide. The graphene film has a thickness of 10-2000 atomic layers. The graphene oxide film has a small thickness and a large number of defects inside, so that it has good transparency and excellent flexibility. On the basis of the transfer film-forming method above, an independent self-supporting plicated graphene film having a nanoscale thickness is prepared by using a poor solvent and a special high temperature annealing process, and an independent self-supporting foamed graphene film having a nanoscale thickness is obtained by using a film-forming thickness and a special high temperature annealing process.
Inventors:
GAO CHAO (CN)
PENG LI (CN)
PENG LI (CN)
Application Number:
PCT/CN2018/086085
Publication Date:
April 18, 2019
Filing Date:
May 08, 2018
Export Citation:
Assignee:
UNIV ZHEJIANG (CN)
International Classes:
C01B32/184
Foreign References:
| CN107651673A | 2018-02-02 | |||
| CN107857251A | 2018-03-30 | |||
| CN107857252A | 2018-03-30 | |||
| CN104030275A | 2014-09-10 | |||
| CN106185901A | 2016-12-07 | |||
| CN104401987A | 2015-03-11 | |||
| CN103935994A | 2014-07-23 |
Other References:
ROMANOS, G. ET AL.: "A facile approach for the development of fine-tuned se- lf-standing graphene oxide membranes and their gas and vapor separation per- formance", JOURNAL OF MEMBRANE SCIENCE, vol. 493, 18 July 2015 (2015-07-18), pages 734 - 747, XP055592428, ISSN: 0376-7388, DOI: 10.1016/j.memsci.2015.07.034
See also references of EP 3620435A4
See also references of EP 3620435A4
Attorney, Agent or Firm:
HANGZHOU QIUSHI PATENT OFFICE CO., LTD. (CN)
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