Fabrication of Porous Carbon-based Nanostructure for Energy Storage and Transfer Applications

Abstract

We have demonstrated a method to improve the capacity of microporous graphene electrodes by in-filling its cavities with graphene eggshells. The eggshell increases the volumetric energy density and its interconnected networks shorten the Li-ion diffusion pathway and ultimately enhance the rate capabilities. Such morphology control is also effective in improving the initial coulombic efficiency of the unfilled graphene foam by 17%. Mechanistic study using in-situ Raman and ex-situ NMR reveals that the Li intercalation mechanism of GE@GF electrode resembles that of bulk graphite, that is, via stage Li-graphite intercalated compounds, although its overall capacity is higher than that of the theoretical values of graphite.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Jun 09, 2014
Accession Number
ADA602329

Entities

People

  • Kian P. Loh

Organizations

  • National University of Singapore

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Alkenes
  • Animal Structures
  • Chemical Vapor Deposition
  • Current Density
  • Diffusion
  • Electrodes
  • Electron Microscopy
  • Energy
  • Energy Storage
  • Fabrication
  • G Band
  • Graphene
  • Graphitic Materials
  • Materials
  • Materials Processing
  • Nanostructures
  • Three Dimensional

Fields of Study

  • Materials science

Readers

  • Battery Technology and Engineering
  • Materials Science and Engineering.
  • Nanoscale Plasmonic Nanotechnology

Technology Areas

  • Microelectronics