Journal of Solid State Electrochemistry

, Volume 19, Issue 6, pp 1773–1782 | Cite as

Nano-silicon/polyaniline composites with an enhanced reversible capacity as anode materials for lithium ion batteries

  • Mingyan Feng
  • Jianhua Tian
  • Haimei Xie
  • Yilan Kang
  • Zhongqiang Shan
Original Paper


Silicon nanoparticles are coated with the conductive polyaniline (PANI) using in situ polymerization method as anode materials to improve the electrochemical performance for lithium ion batteries. At first, the physicochemical and electrochemical properties of the doped polyaniline in the lithium ion electrolyte are investigated. After that, the effect of different contents of PANI for preparing Si/PANI composites on the composition and structure and thus the electrochemical performance are investigated. The structure and morphology of as-prepared materials are characterized systematically by scanning electron microscopy (SEM), transmission electron microscopy (TEM), and X-ray diffraction (XRD). It is demonstrated that the silicon/polyaniline composite presents the core/shell structure. The Si/PANI composite with 12.3 wt% PANI exhibits the optimum electrochemical performance. The electrode still maintains better reversible capacity of 766.6 mAh g−1, and the capacity retention of 72 % is retained after 50 cycles at current density of 2 A g−1. The good electrochemical properties can be attributed to the PANI-coating layer, which can improve the electrical conductivity of the Si-based anode materials for lithium ion batteries and accommodate the volume change of silicon during the charge-discharge processes.


Lithium ion batteries Anode Si/PANI composite In situ polymerization Electrochemical performance 



This work was financially supported by the Natural Science Foundation of China (11372217) and the Tianjin Committee of Science and Technology (14JCZDJC32400).


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Copyright information

© Springer-Verlag Berlin Heidelberg 2015

Authors and Affiliations

  • Mingyan Feng
    • 1
  • Jianhua Tian
    • 1
  • Haimei Xie
    • 2
  • Yilan Kang
    • 2
  • Zhongqiang Shan
    • 1
  1. 1.School of Chemical Engineering and TechnologyTianjin UniversityTianjinPeople’s Republic of China
  2. 2.School of Mechanical EngineeringTianjin UniversityTianjinPeople’s Republic of China

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