Title:
PROCESS FOR PRODUCING GRAPHENE
Document Type and Number:
WIPO Patent Application WO/2011/054305
Kind Code:
A1
Abstract:
Provided is a process for producing graphene, wherein graphite powder is wet ball-milled in an organic solvent with a surface tension of 30-45 mNm-1, and surfaces of milling balls for in use are coated with soft polymer. This process has the following advantages: 1) by coating the hard milling balls with soft polymer, damage to graphite crystal structure from rigid collisions among the milling balls is effectively decreased, the milling effect is greatly improved and productivity of graphene may reach 30-50 wt%; 2) industrialized production can be easily realized by using ball-milling; 3) graphene crystal structure remains perfect except for a few defects on marginal portions; and 4) uniform graphene product thickness of 1-2 carbon atom layers.
Inventors:
CHEN GUOHUA (CN)
ZHAO WEIFENG (CN)
ZHAO LIPING (CN)
ZHAO WEIFENG (CN)
ZHAO LIPING (CN)
Application Number:
PCT/CN2010/078423
Publication Date:
May 12, 2011
Filing Date:
November 04, 2010
Export Citation:
Assignee:
UNIV HUAQIAO (CN)
XIAMEN KNANO GRAPHENE TECHNOLOGY CO LTD (CN)
CHEN GUOHUA (CN)
ZHAO WEIFENG (CN)
ZHAO LIPING (CN)
XIAMEN KNANO GRAPHENE TECHNOLOGY CO LTD (CN)
CHEN GUOHUA (CN)
ZHAO WEIFENG (CN)
ZHAO LIPING (CN)
International Classes:
C01B31/04
Foreign References:
| CN101704520A | 2010-05-12 | |||
| CN101671015A | 2010-03-17 | |||
| US20050271574A1 | 2005-12-08 |
Other References:
LUO GUILIAN ET AL.: "PREPARATION OF GRAPHITE NANOPLATELET DISPERSION IN ORGANIC SOLVENT FROM NATURAL GRAPHITE", CARBON, 2008, pages 34 - 37
Attorney, Agent or Firm:
XIAMEN SHINHWA PATENT & TRADEMARK AGENCY CO., LTD. (CN)
厦门市新华专利商标代理有限公司 (CN)
厦门市新华专利商标代理有限公司 (CN)
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