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Keywords:

  • Cobalt oxides;
  • Lithium ion batteries;
  • Nanotubes, inorganic;
  • Sensors, gas;
  • Template-directed synthesis/assembly

Abstract

Co3O4 nanotubes, nanorods, and nanoparticles are used as the anode materials of lithium-ion batteries. The results show that the Co3O4 nanotubes prepared by a porous-alumina-template method display high discharge capacity and superior cycling reversibility. Furthermore, Co3O4 nanotubes exhibit excellent sensitivity to hydrogen and alcohol, owing to their hollow, nanostructured character.