Nano-sized and micron-sized LiFePO 4 electrode materials were prepared by a sol gel and coprecipitation reactions. An improvement of the cycling and rate performances in lithium cells was observed for the carbon coated LiFePO 4 materials. The coating process uses a solid/gas-phase reaction which consists of decomposing propylene gas, as carbon source, inside a reactor containing olivine LiFePO 4 materials. Optimized LiFePO 4 electrode cells, cycled at RT between 3.0 and 4.3 V at a C/10 rate, do not show any sign of capacity fade during the first 50 cycles. Combination of the high volumetric energy density and low cost preparation method makes the micron-sized LiFePO 4 olivine an attractive safe cathode for lithium-ion batteries.
|Number of pages||5|
|Journal||Eurasian Chemico-Technological Journal|
|Publication status||Published - 1 Dec 2010|
ASJC Scopus subject areas
- Chemical Engineering(all)
- Condensed Matter Physics
- Materials Science(all)