Layer-by-layer synthesis of γ-Fe2O3@SnO2@C porous core-shell nanorods with high reversible capacity in lithium-ion batteries

Nanoscale. 2013 Jun 7;5(11):4744-50. doi: 10.1039/c3nr00275f. Epub 2013 Apr 19.

Abstract

We demonstrated the layer-by-layer synthesis of γ-Fe2O3@SnO2@C porous core-shell nanorods. FeOOH nanorods were first synthesized via a hydrothermal process, and acted as a template for subsequent layer-by-layer deposition. It was indicated that the electrostatic attraction between the charged species may play the key role in the formation of the core-shell nanostructures. When used as an anode material in lithium-ion batteries, γ-Fe2O3@SnO2@C porous core-shell nanorods showed high initial Coulombic efficiency, high reversible capacity, and good cycling and rate performances. The correlation between the structure, composition and electrochemical performance was also discussed.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Carbon / chemistry*
  • Electric Power Supplies*
  • Electrochemical Techniques
  • Ferric Compounds / chemistry*
  • Ions / chemistry
  • Lithium / chemistry
  • Particle Size
  • Porosity
  • Static Electricity
  • Tin Compounds / chemistry*

Substances

  • Ferric Compounds
  • Ions
  • Tin Compounds
  • ferric oxide
  • Carbon
  • Lithium
  • stannic oxide