A binary solvent system for improved liquid phase exfoliation of pristine graphene materials. (November 2015)

• Record Type: Journal Article
• Authors: Chen, Jianping; Shi, Weili; Fang, Dong; Wang, Tao; Huang, Jing; Li, Qi; Jiang, Ming; Liu, Lei; Li, Qiong; Dong, Lijie; Wang, Qing; Xiong, Chuanxi
• Is Part Of: Carbon. Volume 94(2015)
• Page Start: 405
• Page End: 411
• Publication Date: 2015-11
• Subjects: Carbon -- Periodicals; Carbone -- Périodiques; Koolstof; Toepassingen; Electronic journals; 546.681
• DOI: 10.1016/j.carbon.2015.07.006
• Languages: English
• ISSNs: 0008-6223

Abstract

Abstract: Up to now, the cost-effective mass production of pristine graphene sheets remains a significant challenge. We report a binary solvent system of dimethylformamide and n -butylalcohol that facilitates the high concentration production of unoxidized graphene through liquid-exfoliation assisted with sonication. A stable dispersion with concentration as high as 6.5 mg/ml, was received via this method. The conductivity of a film made from the graphene sheets had a conductivity of 27, 000 S/m. The supercapacitor fabricated by graphene exhibits a giant capacitance of 600 F/g and an outstanding long-term stability.