Hollow Fe3O4/C spheres as superior lithium storage materials

Qiumei Zhang, Zhicong Shi, Yuanfu Deng, Jun Zheng, Guichang Liu, Guohua Chen

Research output: Journal article publicationJournal articleAcademic researchpeer-review

104 Citations (Scopus)

Abstract

Unique hollow Fe3O4/C spheres are prepared by a simple one-pot solvothermal method, with spinel structure and 750 nm in diameter identified by X-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM) techniques. The hollow Fe3O4/C spheres exhibit excellent cycling and rate performance as anode material for lithium ion batteries, delivering reversible specific capacities of 984 mAh g-1even after 70 cycles at 0.2 C, 620 mAh g-1at 2 C, and 460 mAh g-1at 5 C, respectively. Lithium insertion mechanisms are also proposed in terms of the ex situ XRD analysis of the electrodes after discharged and charged to certain voltages together with cyclic voltammetry (CV) and voltage profile.
Original languageEnglish
Pages (from-to)305-309
Number of pages5
JournalJournal of Power Sources
Volume197
DOIs
Publication statusPublished - 1 Jan 2012
Externally publishedYes

Keywords

  • Anode material
  • High capacity
  • Hollow sphere
  • Lithium ion battery
  • Spinel iron oxide

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Energy Engineering and Power Technology
  • Physical and Theoretical Chemistry
  • Electrical and Electronic Engineering

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