In situ electrochemical dilatometric study of Fe3O4/reduced graphene oxide nanocomposites as anode material for lithium ion batteries

Hyun Kyung Kim, Kwang Chul Roh, Kwang Bum Kima

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

In situ electrochemical dilatometry (ECD) was performed on Fe3O4/reduced graphene oxide (RGO) nanocomposite during galvanostatic charge and discharge tests in order to investigate the volume change of the metal-oxide/RGO nanocomposites and the role of RGO as a buffering agent in the composite. Fe3O4/RGO nanocomposite with Fe3O4 particles (2-3 nm in size) was successfully prepared through selective heterogeneous precipitation of nanosized Fe3O4 on RGO. A combined analysis of the thickness (t)-change curve of the composite electrode measured via ECD and the differential t-change curve along with the charge/discharge and differential capacity curves clearly indicated the buffering role of RGO in the composite, which exhibited excellent energy efficiency and cycling stability.

Original languageEnglish
Pages (from-to)A2308-A2312
JournalJournal of the Electrochemical Society
Volume162
Issue number12
DOIs
Publication statusPublished - 2015 Jan 1

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Renewable Energy, Sustainability and the Environment
  • Surfaces, Coatings and Films
  • Electrochemistry
  • Materials Chemistry

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