Characterization and Optimized Electrochemical Performances of LiFe_(1-2x)Zr_xPO_4/C Nanocomposites as Cathode Materials for Lithium-Ion Batteries

摘要

A series of nanocomposite LiFe_(1-2x)Zr_xPO_4/C (x = 0.01, 0.02, 0.03, 0.04, 0.06) were prepared by carbon thermal reduction method. With this strategy, the Li_3PO_4 impurity phase can be obviously reduced in the Zr-doped samples and the electrochemical performance is obviously improved by Zr doping compared with the undoped one. The best electrochemical performances were observed in LiFe_(0.92)Zr_(0.04)PO_4/C as well as good cycle stability.