Improved Elevated Temperature Cycling of LiMn[sub 2]O[sub 4] Spinel Through the Use of a Composite LiF-Based Electrolyte
- 1 January 2001
- journal article
- Published by The Electrochemical Society in Electrochemical and Solid-State Letters
- Vol. 4 (11) , A184-A186
- https://doi.org/10.1149/1.1405036
Abstract
A composite electrolyte containing LiF and a tris(pentafluorophenyl)borane (TPFPB) anion complexing agent displays superior thermal and electrochemical stability compared to commercial -based electrolytes. Severe capacity fading of a cell, with a commercial electrolyte, was observed when cycled at 55°C. The capacity fading was attributed to acidic products, from salt hydrolysis and decomposition of the solvent, which degraded electrode. The composite electrolyte containing LiF and TPFPB is not moisture sensitive and does not produce acidic species. At room temperature, the composite electrolyte shows an improvement in capacity maintenance with cycling. However, at 55°C the improvement is much greater. © 2001 The Electrochemical Society. All rights reserved.Keywords
This publication has 11 references indexed in Scilit:
- Failure Mechanism and Improvement of the Elevated Temperature Cycling of LiMn[sub 2]O[sub 4] Compounds Through the Use of the LiAl[sub x]Mn[sub 2−x]O[sub 4−z]F[sub z] Solid SolutionJournal of the Electrochemical Society, 2001
- Comparative Studies of the Electrochemical and Thermal Stability of Two Types of Composite Lithium Battery Electrolytes Using Boron‐Based Anion ReceptorsJournal of the Electrochemical Society, 1999
- A Novel Lithium Battery Electrolyte Based on Lithium Fluoride and a Tris(pentafluorophenyl) Borane Anion Receptor in DMEElectrochemical and Solid-State Letters, 1999
- The Synthesis of a New Family of Boron‐Based Anion Receptors and the Study of Their Effect on Ion Pair Dissociation and Conductivity of Lithium Salts in Nonaqueous SolutionsJournal of the Electrochemical Society, 1998
- Self‐Discharge of LiMn2 O 4/C Li‐Ion Cells in Their Discharged State: Understanding by Means of Three‐Electrode MeasurementsJournal of the Electrochemical Society, 1998
- Materials' effects on the elevated and room temperature performance of CLiMn2O4 Li-ion batteriesJournal of Power Sources, 1997
- Electrolyte Effects on Spinel Dissolution and Cathodic Capacity Losses in 4 V Li / Li x Mn2 O 4 Rechargeable CellsJournal of the Electrochemical Society, 1997
- 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