Jump to main content
Jump to site search
PLANNED MAINTENANCE Close the message box

Scheduled maintenance work on Tuesday 19th September 2017 from 8.00am to 4.00pm (BST).

During this time our website performance may be temporarily affected. If you have any questions please use the feedback button available under our menu button. We apologise for any inconvenience this might cause and thank you for your patience.


Issue 11, 2012
Previous Article Next Article

Structural, magnetic and electrochemical study of a new active phase obtained by oxidation of a LiFePO4/C composite

Author affiliations

Abstract

In this work, a new phase produced by controlled oxidation of a LiFePO4/C composite has been isolated and characterized. This new compound preserves mainly an olivine structure, but the complete oxidation of Fe is implied. A significant iron mis-site disorder and vacancy formation is proposed. The new phase demonstrated possession of different spectroscopic, magnetic and electrochemical properties from triphilite–heterosite. AC and DC magnetic susceptibility and specific heat measurements showed that the new phase presented spin-glass behavior. Electrochemical cycling showed that the new phase reacted at 2.5 V, which is a different potential to the heterositeversus a Li anode. Moreover, it provoked reversion to the triphilite–heterosite system, although a fraction of the material remained as the oxidized phase.

Graphical abstract: Structural, magnetic and electrochemical study of a new active phase obtained by oxidation of a LiFePO4/C composite

Back to tab navigation

Supplementary files

Publication details

The article was received on 08 Sep 2011, accepted on 03 Dec 2011 and first published on 30 Jan 2012


Article type: Paper
DOI: 10.1039/C2JM14462J
Citation: J. Mater. Chem., 2012,22, 4735-4743
  •   Request permissions

    Structural, magnetic and electrochemical study of a new active phase obtained by oxidation of a LiFePO4/C composite

    V. Palomares, A. Goñi, A. Iturrondobeitia, L. Lezama, I. de Meatza, M. Bengoechea and T. Rojo, J. Mater. Chem., 2012, 22, 4735
    DOI: 10.1039/C2JM14462J

Search articles by author

Spotlight

Advertisements