Synthesis and characterization of Cu-doped LiFePO4 with/without carbon coating for cathode of lithium-ion batteries

Cesario Ajpi, Giovana Diaz, Heidy Visbal, Kazuyuki Hirao

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7 Scopus citations

Abstract

The Cu-doped LiFePO4 with/without carbon coating was synthesized by sol-gel method. The material was characterized by X-ray diffraction, Raman spectroscopy, Scanning Electron Microscopy, Energy Dispersive Spectroscopy and its electrochemical properties were investigated by charge-discharge tests. For the carbon coated sample presents a high uniformity and a particle size around 50-100 nm. Electrochemical tests show that the specified capacity was 102 mAh/g measured 0.25C (1.5 mA) regime discharge rate, voltage range (2.5-3.7 V). Optimization of this composite would be required, but the Cu doping and carbon coating to LiFePO4 showed a promising material for use as cathode material in lithium ion battery.

Original languageEnglish
Pages (from-to)441-443
Number of pages3
JournalJournal of the Ceramic Society of Japan
Volume121
Issue number1413
DOIs
StatePublished - May 2013
Externally publishedYes

Keywords

  • Cathode material
  • Ion doping
  • Lithium iron phosphates
  • Lithium-ion batteries
  • Sol-gel synthesis

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