Sandwich-structured graphene-NiFe2O4-carbon nanocomposite anodes with exceptional electrochemical performance for Li ion batteries

Elham Kamali Heidari, Biao Zhang, Mahmoud Heydarzadeh Sohi, Abolghasem Ataie, Jang Kyo Kim

Research output: Contribution to journalArticlepeer-review

80 Scopus citations

Abstract

Graphene-NiFe2O4-carbon nanocomposites with a sandwich structure are synthesized via the hydrothermal growth of NiFe 2O4 nanoparticles on graphene sheets, followed by carbon coating. As a promising anode material for Li ion batteries, the nanocomposites deliver exceptional cycle stability of 1195 mA h g-1 after 200 cycles measured at 500 mA g-1. This value is among the highest reported so far for anodes containing similar NiFe2O4 nanoparticles. The synergy arising from the conductive graphene substrate, the well-dispersed, ultrafine NiFe2O4 nanoparticles and the protective carbon layer sustaining the sandwich together is responsible for this trait.

Original languageBritish English
Pages (from-to)8314-8322
Number of pages9
JournalJournal of Materials Chemistry A
Volume2
Issue number22
DOIs
StatePublished - 14 Jun 2014

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