Sci. Adv. Today 2 (2016) 25252  
  Research Article  
   
   
         
Easy fabrication of nanohybrids comprising Co3O4 nanoparticles on electrospun carbon nanofibers for use as binder-free lithium-ion battery anodes  
  Manab Kundu, Lifeng Liu  
     
International Iberian Nanotechnology Laboratory (INL), Av. Mestre Jose Veiga, 4715-330 Braga, Portugal
Present address: Department of Materials Science and Engineering, Norwegian University of Science and Technology, N-7491 Trondheim, Norway

   
  Abstract  
  Hybrid nanostructures comprising Co3O4 nanoparticles (NPs) embedded on carbon nanofibers have been successfully obtained by simple and convenient successive ionic layer adsorption and reaction (SILAR) deposition of cobalt-containing precursors on electrospun carbon nanofibers (CNFs), followed by thermal annealing in inert atmosphere. The as-obtained CNFs have an average diameter of ca. 200 nm, and the embedded Co3O4 NPs range from 40 to 80 nm in size. The self-supported Co3O4 NPs-CNFs hybrid mat has been directly used as a binder-free anode in lithium ion batteries, and its electrochemical performance is evaluated by cyclic voltammetry, galvanostatic charge/discharge test and electrochemical impedance spectroscopy. The results show that the binder-free Co3O4-CNFs anode is able to deliver high specific capacity of 1012 mAh g-1 at 1C rate even after 350 cycles. The excellent performance can be attributed to good dispersion of Co3O4 NPs, the high electrical conductivity of the underlying CNFs as well as the binder-free feature of the electrode, which greatly facilitate the ion and electron transport in the electrode during charge and discharge processes.  
     
   
  Cite this article as:  
  Manab Kundu, Lifeng Liu, Easy fabrication of nanohybrids comprising Co3O4 nanoparticles on electrospun carbon nanofibers for use as binder-free lithium-ion battery anodes, Sci. Adv. Today 2 (2016) 25252.