A facile hydrazine-assisted hydrothermal method for the deposition of monodisperse SnO 2 nanoparticles onto graphene for lithium ion batteries

Seung Keun Park, Seung Ho Yu, Nicola Pinna, Seunghee Woo, Byungchul Jang, Young Hoon Chung, Yong Hun Cho, Yung Eun Sung, Yuanzhe Piao

Research output: Contribution to journalArticle

114 Citations (Scopus)

Abstract

In this manuscript, we introduce a facile hydrothermal method for the controlled growth of SnO 2 nanoparticles onto graphene oxide. Hydrazine plays a fundamental role in controlling the formation and crystallization of SnO 2 nanoparticles, and the reduction of graphene oxide to graphene. The SnO 2-graphene composite consists of 3-4 nm monodisperse SnO 2 nanocrystals homogeneously dispersed at the surface of graphene. It is demonstrated that the composite can accommodate the large volume change of SnO 2 which occurs during lithiation-delithiation cycles. When used as an anode material for lithium ion batteries, it exhibits a first discharge capacity of 1662 mA h g -1, which rapidly stabilizes and still remains at 626 mA h g -1 even after 50 cycles, when cycled at a current density of 100 mA g -1. Even at the very high current density of 3200 mA g -1, the composite displays a stable capacity of 383 mA h g -1 after 50 cycles.

Original languageEnglish
Pages (from-to)2520-2525
Number of pages6
JournalJournal of Materials Chemistry
Volume22
Issue number6
DOIs
Publication statusPublished - 2012 Feb 14
Externally publishedYes

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Chemistry

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