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Citation: ZHENG Zhen-Miao, TANG Xin-Cun, WANG Yang, JIN Yuan, MENG Jia, LIU Wen-Ming, WANG Tao. Solvothermal Synthesis and Electrochemical Performance of Flowerlike LiFePO4 Hierarchically Microstructures[J]. Chinese Journal of Inorganic Chemistry, ;2015, (4): 731-738. doi: 10.11862/CJIC.2015.106 shu

Solvothermal Synthesis and Electrochemical Performance of Flowerlike LiFePO4 Hierarchically Microstructures

  • 1.

    School of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China

  • Corresponding author: TANG Xin-Cun, 
  • Received Date: 22 October 2014
    Available Online: 24 December 2014

    Fund Project: 国家自然科学基金(No.21276286) 资助项目。 (No.21276286)

  • The cathode material LiFePO4 with high tap density of 1.3 g·cm-3 was synthesized via a solvothermal technique, using ammonium tartrate as additive and carbon source, and ethylene glycol/water as solvent. The as-prepared samples were characterized by X-ray diffraction, Fourier-transform infrared spectroscopy, scanning and transmission electron microscopies. The results show that the as-prepared samples were flowerlike LiFePO4 which consists of single-crystalline nanoplates with an open porous hierarchical structure. A reasonable formation mechanism is proposed based on time dependent experiments. The main evolving process involves the following steps: nucleation, growth and oriented assembling. The electrochemical properties of the LiFePO4 cathode is found to exhibit excellent rate capability (i.e., discharge capacity of 74.8 mAh·g-1 at 10C) and cycling performance (i.e., > 93% of capacity retention rate after 50 cycles).
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