A New Synthetic Route for Preparing LiFePO[sub 4] with Enhanced Electrochemical Performance

Nanocrystalline was obtained by heating amorphous nanosized The amorphous material was obtained by lithiation of synthesized by spontaneous precipitation from equimolar aqueous solutions of and using hydrogen peroxide as the oxidizing agent. The materials were characterized by chemical analysis, thermogravimetric and differential thermal analysis, X-ray powder diffraction, and scanning electron microscopy. The Brunauer- Emmett-Teller method was used to evaluate the specific surface area. Nanocrystalline showed very good electrochemical performance delivering about the full theoretical capacity when cycled at the C/10 rate. A capacity fade of about 0.25% per cycle affected the material upon cycling. © 2002 The Electrochemical Society. All rights reserved.