A non-dispersion strategy for large-scale production of ultra-high concentration graphene slurries in water

作者:Dong, Lei; Chen, Zhongxin; Zhao, Xiaoxu; Ma, Jianhua; Lin, Shan; Li, Mengxiong; Bao, Yang; Chu, Leiqiang; Leng, Kai; Lu, Hongbin*; Loh, Kian Ping*
来源:Nature Communications, 2018, 9(1): 76.
DOI:10.1038/s41467-017-02580-3

摘要

It is difficult to achieve high efficiency production of hydrophobic graphene by liquid phase exfoliation due to its poor dispersibility and the tendency of graphene sheets to undergo pi-pi stacking. Here, we report a water-phase, non-dispersion exfoliation method to produce highly crystalline graphene flakes, which can be stored in the form of a concentrated slurry (50 mg mL(-1)) or filter cake for months without the risk of re-stacking. The as-exfoliated graphene slurry can be directly used for 3D printing, as well as fabricating conductive graphene aerogels and graphene-polymer composites, thus avoiding the use of copious quantities of organic solvents and lowering the manufacturing cost. This non-dispersion strategy paves the way for the cost-effective and environmentally friendly production of graphene-based materials.

  • 出版日期2018-1-8
  • 单位聚合物分子工程国家重点实验室; 复旦大学