Ultra-thin, highly graphitized carbon nanosheets into three-dimensional interconnected framework utilizing a ball mill mixing of precursors

Jie Wang, Jeonghun Kim, Bing Ding, Jung Ho Kim, Victor Malgras, Christine Young, Yusuke Yamauchi

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)

Abstract

Constructing two-dimensional (2D) carbon nanosheets into a three-dimensional (3D) framework can prevent restacking and increase the accessible surface area, which is promising to broaden the range of applications of 2D carbon materials. Here we report a facile preparation of an ultrathin, highly graphitized carbon nanosheets framework (UGCF) by directly carbonizing a gel composite of resol, FeCl3·6H2O, and F127 block polymer prepared by ball milling. During the carbonization process, the presence of FeCl3·6H2O in the resol-F127-Fe composite benefits the formation of highly graphitized structure, while F127 helps to introduce the porous architecture, resulting in an interconnected framework of carbon nanosheets. The unique carbon nanostructure of this UGCF has major advantages for electrochemical applications, owing to the large accessible geometrical surface, the rapid diffusion paths for ions, and the continuous transfer path for electrons through the graphitic framework. When used as anode in lithium-ion batteries, the UGCF shows excellent electrochemical performance in terms of capacity, rate performance, and cycle stability. This work provides a convenient and simple scale-up method to prepare highly graphitized carbon nanosheets with 3D nanoarchitecture.

Original languageEnglish
Pages (from-to)1214-1220
Number of pages7
JournalChemical Engineering Journal
Volume374
DOIs
Publication statusPublished - 2019 Oct 15
Externally publishedYes

Keywords

  • Electrochemical performance
  • High degree of graphitization
  • Surfactant-based assembly
  • Three-dimensional architectonic
  • Two-dimensional carbon

ASJC Scopus subject areas

  • Chemistry(all)
  • Environmental Chemistry
  • Chemical Engineering(all)
  • Industrial and Manufacturing Engineering

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