Preparation of porous structure LiFePO 4/C composite by template method for lithium-ion batteries

Feng Liang, Yaochun Yao, Yongnian Dai, Bin Yang, Wenhui Ma, Takayuki Watanabe

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

Cationic surfactant cetyltrimethylammonium bromide (CTAB) was used as template to prepare porous structure LiFePO 4/C composite by the template method. The porous structure LiFePO 4/C composites were characterized using X-ray diffraction (XRD), scanning electron microscope (SEM), transition electron microscopy (TEM), high voltage electron microscopy (HVEM), and nitrogen adsorption-desorption test. The structures and electrochemical performances of the samples calcined at different calcination times at 700 °C were studied. The results indicate that the porous structure LiFePO 4/C composite prepared at 700 °C for 24 h exhibited the best electrochemical performance, the discharge capacity is up to 152.1 mAh g - 1 at 0.1 C rate. Compared with nano-sized LiFePO 4/C composite without template, porous structure LiFePO 4/C could dramatically improve the rate capability because of its higher specific surface area and more channels for fast lithium ion diffusion.

Original languageEnglish
Pages (from-to)31-36
Number of pages6
JournalSolid State Ionics
Volume214
DOIs
Publication statusPublished - Apr 25 2012
Externally publishedYes

    Fingerprint

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

Cite this