TY - JOUR
T1 - Preparation of porous structure LiFePO 4/C composite by template method for lithium-ion batteries
AU - Liang, Feng
AU - Yao, Yaochun
AU - Dai, Yongnian
AU - Yang, Bin
AU - Ma, Wenhui
AU - Watanabe, Takayuki
N1 - Funding Information:
This work was supported financially by NSFC (No: 51002067 ) and Natural Science Foundation of Yunnan Province of China (No: 200927049 ). We thank Prof. A. Sato (High Voltage Electron Microscopy Laboratory, Tokyo Institute of Technology) for the HVEM observation, Miss. Y N Wang (Chemical Resources Laboratory, Tokyo Institute of Technology) for Nitrogen adsorption–desorption isotherms test, and Dr. Y C Dong (Materials and Structures Laboratory, Tokyo Institute of Technology) for discussion.
PY - 2012/4/25
Y1 - 2012/4/25
N2 - 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.
AB - 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.
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U2 - 10.1016/j.ssi.2012.02.043
DO - 10.1016/j.ssi.2012.02.043
M3 - Article
AN - SCOPUS:84859713637
SN - 0167-2738
VL - 214
SP - 31
EP - 36
JO - Solid State Ionics
JF - Solid State Ionics
ER -
