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 journalArticlepeer-review

40 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

All Science Journal Classification (ASJC) codes

  • General Chemistry
  • General Materials Science

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