Synthesis, Structure, and Electrochemical Properties of a New Cathode Material, LiFeO[sub 2], with a Tunnel Structure
Open Access
- 1 January 2002
- journal article
- Published by The Electrochemical Society in Journal of the Electrochemical Society
- Vol. 149 (12) , A1509-A1513
- https://doi.org/10.1149/1.1516769
Abstract
A new lithium iron oxide, LiFeO2,LiFeO2, with a tunnel structure was synthesized by an ion exchange reaction between the host material, β-FeOOH, with LiOH⋅H2O,LiOH⋅H2O, and its cathodic properties for lithium cells were examined. The ion exchange reaction was carried out by solvothermal reactions using various alcohols and the new phase was obtained for the reaction at 110°C. Its structure, determined by X-ray diffraction measurements using Rietveld analysis, has the hollandite-type tunnel structure. Lithium cells consisting of the new LiFeO2LiFeO2 cathodes and lithium anodes showed good charge and discharge reversibility in the voltage range, 1.5 to 4.5 V. The lithium intercalation and deintercalation mechanism was characterized using X-ray diffraction results, Mössbauer spectroscopy, and electrochemical measurements. © 2002 The Electrochemical Society. All rights reserved.Keywords
This publication has 13 references indexed in Scilit:
- Structure and physical properties of lithium iron oxide, LiFeO2, synthesized by ionic exchange reactionSolid State Ionics, 1995
- Phase Relationship and Lithium Deintercalation in Lithium Nickel OxidesJournal of Solid State Chemistry, 1994
- Synthesis of LiMnO2 and LiFeO2 in molten Li halidesSolid State Ionics, 1994
- Synthesis and Structural Characterization of a Novel Layered Lithium Manganese Oxide, Li0.36Mn0.91O2, and Its Lithiated Derivative, Li1.09Mn0.91O2Journal of Solid State Chemistry, 1993
- Structural studies of Li0.7VO2 in the temperature range 20–300°CJournal of Solid State Chemistry, 1988
- Ion exchange of layered α-NaFeO2Materials Chemistry and Physics, 1987
- LixCoO2 (0<x<-1): A new cathode material for batteries of high energy densityMaterials Research Bulletin, 1980
- Magnetic ordering in LiCr1−xFexO2Journal of Solid State Chemistry, 1972
- Effective ionic radii in oxides and fluoridesActa Crystallographica Section B: Structural Science, Crystal Engineering and Materials, 1969
- Order-disorder transitions in heat-treated rock-salt Lithium FerriteJournal of Physics and Chemistry of Solids, 1964