A binary solvent system for improved liquid phase exfoliation of pristine graphene materials

Jianping Chen, Weili Shi, Dong Fang, Tao Wang, Jing Huang, Qi Li, Ming Jiang, Lei Liu, Qiong Li, Lijie Dong, Qing Wang, Chuanxi Xiong

Research output: Contribution to journalArticle

24 Scopus citations

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.

Original languageEnglish (US)
Pages (from-to)405-411
Number of pages7
JournalCarbon
Volume94
DOIs
StatePublished - Aug 29 2015

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All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Materials Science(all)

Cite this

Chen, J., Shi, W., Fang, D., Wang, T., Huang, J., Li, Q., Jiang, M., Liu, L., Li, Q., Dong, L., Wang, Q., & Xiong, C. (2015). A binary solvent system for improved liquid phase exfoliation of pristine graphene materials. Carbon, 94, 405-411. https://doi.org/10.1016/j.carbon.2015.07.006