MoO2-ordered mesoporous carbon nanocomposite as an anode material for lithium-ion batteries

ACS Appl Mater Interfaces. 2013 Mar;5(6):2182-7. doi: 10.1021/am303286n. Epub 2013 Mar 7.

Abstract

In the present work, the nanocomposite of MoO2-ordered mesoporous carbon (MoO2-OMC) was synthesized for the first time using a carbon thermal reduction route and the mesoporous carbon as the nanoreactor. The synthesized nanocomposite was characterized by X-ray diffraction (XRD), thermogravimetric analysis (TGA), N2 adsorption-desorption, scanning electron microscopy (SEM), and transmission electron microscopy (TEM) measurements. Furthermore, this nanocomposite was used as an anode material for Li-ion intercalation and exhibited large reversible capacity, high rate performance, and good cycling stability. For instance, a high reversible capacity of 689 mAh g(-1) can remain after 50 cycles at a current density of 50 mA g(-1). It is worth mentioning that the MoO2-OMC nanocomposite electrode can attain a high reversible capacity of 401 mAh g(-1) at a current density as high as 2 A g(-1). These results might be due to the intrinsic characteristics of nanocomposite, which offered a better accommodation of the strain and volume changes and a shorter path for Li-ion and electron transport, leading to the improved capacity and enhanced rate capability.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Electric Power Supplies*
  • Electrodes*
  • Lithium / chemistry*
  • Molybdenum / chemistry*
  • Nanocomposites / chemistry*
  • Oxides / chemistry*
  • Porosity

Substances

  • Oxides
  • molybdenum dioxide
  • Molybdenum
  • Lithium