Synthesis and Characterization of Amorphous 3Fe2O3·2P2O5·10H 2O and Its Electrode Performance in Lithium Batteries

Pier Paolo Prosini, Luciano Cianchi, Gabriele Spina, Marida Lisi, Silvera Scaccia, Maria Carewska, Carla Minarini, Mauro Pasquali

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Abstract

Amorphous 3Fe2O3·2P2O5·10H 2O was prepared by oxidation of iron(II) phosphate, obtained by spontaneous precipitation from iron(II) and phosphate aqueous solutions, by heating in air at 100°C. The material was characterized by thermal analysis, Mössbauer spectroscopy, X-ray powder diffraction, and scanning electron micrograph analysis. The material, tested as cathode in a nonaqueous lithium cell, exhibited a specific capacity of about 140 mAh g-1 at a current density of 25 mA g-1. The utilization was reduced to about 76% by a tenfold increase of the discharge current. It showed an excellent cyclability. More than 1000 cycles were performed at about 50% of depth of discharge, with a capacity fade lower than 0.025%. © 2001 The Electrochemical Society. All rights reserved.
Original languageEnglish
Pages (from-to)-
JournalJournal of the Electrochemical Society
Volume148
Issue number10
DOIs
Publication statusPublished - Oct 2001

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All Science Journal Classification (ASJC) codes

  • Electrochemistry
  • Surfaces, Coatings and Films
  • Surfaces and Interfaces

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