Phase Transitions in Li[sub 1−δ]Ni[sub 0.5]Mn[sub 1.5]O[sub 4] during Cycling at 5 V
- 1 January 2004
- journal article
- Published by The Electrochemical Society in Electrochemical and Solid-State Letters
- Vol. 7 (7), A216-A220
- https://doi.org/10.1149/1.1753252
Abstract
Structural change of with two different crystallographic structures of and was studied during Li extraction. Ex situ X-ray diffraction and transmission electron microscopy studies on partially delithiated revealed that structure lost its characteristic diagonal glide symmetry, suggesting a structural transition arising from the possible migration of cations during oxidation from to For the ordering of cations was destroyed by random migration of cations during Li extraction, resulting in the formation of intermediate phase with the structure. The phase transitions were reversible, meaning that migration of cations is highly reversible during lithiation/delithiation. © 2004 The Electrochemical Society. All rights reserved.Keywords
This publication has 19 references indexed in Scilit:
- Molten salt synthesis of LiNi0.5Mn1.5O4 spinel for 5 V class cathode material of Li-ion secondary batteryElectrochimica Acta, 2003
- Nano-crystalline LiNi0.5Mn1.5O4 synthesized by emulsion drying methodElectrochimica Acta, 2002
- Optimizing preparation conditions for 5 V electrode performance, and structural changes in Li1−xNi0.5Mn1.5O4 spinelElectrochimica Acta, 2002
- Synthesis and Electrochemical Properties of ZnO-Coated LiNi[sub 0.5]Mn[sub 1.5]O[sub 4] Spinel as 5 V Cathode Material for Lithium Secondary BatteriesElectrochemical and Solid-State Letters, 2002
- Special Issue Ceramics Integration. Synthesis and Characterization of Li[Ni1/2Mn3/2]O4 by Two-Step Solid State Reaction.Journal of the Ceramic Society of Japan, 2002
- Solid-state redox potentials for Li[Me1/2Mn3/2]O4 (Me: 3d-transition metal) having spinel-framework structures: a series of 5 volt materials for advanced lithium-ion batteriesJournal of Power Sources, 1999
- Structural Fatigue in Spinel Electrodes in High Voltage (4 V) Li/Li[sub x]Mn[sub 2]O[sub 4] CellsElectrochemical and Solid-State Letters, 1999
- Capacity Fading on Cycling of 4 V Li / LiMn2 O 4 CellsJournal of the Electrochemical Society, 1997
- Dissolution of Spinel Oxides and Capacity Losses in 4 V Li / Li x Mn2 O 4 CellsJournal of the Electrochemical Society, 1996
- Improved capacity retention in rechargeable 4 V lithium/lithium-manganese oxide (spinel) cellsSolid State Ionics, 1994