Synthesis, electrochemical properties, and characterization of LiFePO4/C composite by a two-source method
Journal
Journal of Alloys and Compounds
Journal Volume
487
Journal Issue
1-2
Pages
58-63
Date Issued
2009
Author(s)
Abstract
LiFePO4/C composites were synthesized by a solid state reaction method utilizing two-component mixture of FeC2O4·2H2O and LiH2PO4. Sintering the reactants with C12H22O11 at different temperatures above 650 °C yields a product containing Fe2P as a secondary phase to olivine LiFePO4. The LiFePO4/Fe2P/C composite synthesized at 750 °C exhibits an excellent electrochemical performance, i.e. a discharge capacity of 152 mAh/g with a smooth plateau of 3.37 V and a good cycle performance at 0.2C charge/discharge current rate. Other detection techniques, such as X-ray absorption near edge structure (XANES) and scanning electron microscopy (SEM), were also carried out to characterize the sample. © 2009 Elsevier B.V. All rights reserved.
Subjects
Cathode material; LiFePO4; Lithium-ion batteries
Other Subjects
Cathode material; Charge/discharge; Current rate; Cycle performance; Detection technique; Discharge capacities; Electrochemical performance; LiFePO; LiFePO4; Lithium-ion batteries; Secondary phase; SEM; Solid state reaction method; Two-component mixtures; X-ray absorption near-edge structure; Cathodes; Electric discharges; Electrochemical properties; Lithium; Lithium batteries; Lithium compounds; Olivine; Scanning electron microscopy; Silicate minerals; Sintering; Solid state reactions; Synthesis (chemical); X ray analysis; Lithium alloys
Type
journal article