Home >

news Help

Publication Information


Title
Japanese: 
English:Mass production of high-aspect-ratio few-layer-graphene by high-speed laminar flow 
Author
Japanese: 荒尾 与史彦, 水野 吉規, Kunihiro ARAKI, 久保内 昌敏.  
English: Yoshihiko ARAO, Yoshinori MIZUNO, Kunihiro ARAKI, Masatoshi KUBOUCHI.  
Language English 
Journal/Book name
Japanese: 
English:Carbon 
Volume, Number, Page Vol. 102        pp. 330-338
Published date June 2016 
Publisher
Japanese: 
English:Elsevier 
Conference name
Japanese: 
English: 
Conference site
Japanese: 
English: 
DOI https://doi.org/10.1016/j.carbon.2016.02.046
Abstract An efficient graphene production technique is essential to realize the commercial use of graphene. Liquid-phase exfoliation (LPE) of graphene is a low-cost method of graphene production. LPE is based on shear mixing or sonication in proper liquid. The applied force to graphite has not been optimized. Thus, the production rate and quality of graphene via LPE can be improved by controlling fluid dynamics in liquid. We demonstrate that the high-speed laminar flow generated by a pressure homogenizer effectively exfoliates large quantities of high-quality graphene. In a lab-scale trial, a production rate of 3.6 g/h of graphene in aqueous solution was achieved. In addition, the average lateral size of graphene obtained by the proposed method was larger than that by traditional sonication method. An industrial-scale machine could exceed a production rate of 1 kg/h, marking a significant step in the commercialization of graphene. We show that the graphene obtained using this method improves the mechanical properties of polymers more than graphene obtained via sonication.

©2007 Institute of Science Tokyo All rights reserved.