Jump to main content
Jump to site search

Issue 6, 2002
Previous Article Next Article

Structural and electrochemical properties of Li(Fe, Co)xMn2 −xO4 solid solution as 5 V positive electrode materials for Li secondary batteries

Author affiliations

Abstract

Solid solutions, Li(Fe, Co)xMn2 − xO4 (0 ≤ x ≤ 0.5 for Fe, 0 ≤ x ≤ 1.0 for Co) were synthesized by solid state reaction at 1023–1073 K in O2 atmosphere. The compositional dependence of lattice parameters and cation distribution was studied by neutron diffraction Rietveld refinement. It was revealed that Fe and Co partially occupied tetrahedral 8a sites and the 1∶3 and 1∶1 ordering did not occur on Fe (Co) and Mn ions in octahedral 16d sites. X-Ray absorption fine structure (XAFS) analysis showed the variation of valences and metal–oxygen interatomic distances of Mn, Fe, and Co. The Fe–O distance was longer whereas the Co–O distance was shorter compared to the averaged M16d–O32e distance calculated from the lattice parameters. Charge and discharge properties were studied in voltage range 3.0–5.3 V vs. Li/Li+.

Graphical abstract: Structural and electrochemical properties of Li(Fe, Co)xMn2 − xO4 solid solution as 5 V positive electrode materials for Li secondary batteries

Back to tab navigation

Publication details

The article was received on 18 Jan 2002, accepted on 20 Mar 2002 and first published on 19 Apr 2002


Article type: Paper
DOI: 10.1039/B200690C
Citation: J. Mater. Chem., 2002,12, 1882-1891
  •   Request permissions

    Structural and electrochemical properties of Li(Fe, Co)xMn2 − xO4 solid solution as 5 V positive electrode materials for Li secondary batteries

    H. Shigemura, M. Tabuchi, H. Kobayashi, H. Sakaebe, A. Hirano and H. Kageyama, J. Mater. Chem., 2002, 12, 1882
    DOI: 10.1039/B200690C

Search articles by author

Spotlight

Advertisements