A facile synthesis route for porous spherical LiFePO4/C microscale secondary particles

作者：Ju, Shuyuan; Liu, Tao; Peng, Hongrui; Li, Guicun^*; Chen, Kezheng

来源：Materials Letters, 2013, 93: 194-198.

DOI：10.1016/j.matlet.2012.11.083

• Energy storage and conversion
• LiFePO4
• Lithium ion batteries
• Nanocomposites
• Porous materials

Porous spherical LiFePO4/C microscale secondary particles have been synthesized by the low-temperature hydrothermal method combined with high-temperature calcinations. The synthetic method is facile and easy to scale-up. The spherical microscale secondary particles (5-6 mu m) with porous structures are composed of carbon-coated primary nanoparticles (40-80 nm), which posses high electronic conductivity, short lithium ion diffusion paths, and high tap density of approximately 1.4 g cm(-3). The product delivers desirable electrochemical performances, such as a high rate capacity of 95 mA h g(-1) at 5C and stable cycle life. The LiFePO4 electrode with desired features is a promising cathode candidate for high-power rechargeable lithium-ion batteries.

• 出版日期2013-2-15
• 单位青岛科技大学