Abstract
High‐resolution electron microscopy of electrochemically cycled and shows that both the orthorhombic and monoclinic (layered) polymorphs form antiphase domain microstructures of size upon transforming to cubic spinel. During the subsequent cubic → tetragonal transformation, the antiphase domains become ferroelastic domains that are able to accommodate the large Jahn‐Teller induced strain. Electron diffraction patterns show that much cubic spinel is retained at high overall lithiation. A partially inverse structure with some occupying tetrahedral sites is likely. These features of the transformed spinels provide for improved capacity retention upon cycling compared to conventional . ©1999 The Electrochemical Society
Keywords
Monoclinic crystal systemSpinelMaterials scienceTetragonal crystal systemOrthorhombic crystal systemCrystallographyManganesePhase (matter)Lithium (medication)Electron diffractionCathodeCrystal structureDiffractionMetallurgyChemistryPhysical chemistryOptics
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Publication Info
- Year
- 1999
- Type
- article
- Volume
- 2
- Issue
- 10
- Pages
- 490-490
- Citations
- 82
- Access
- Closed
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Cite This
Haifeng Wang
(1999).
Origin of Cycling Stability in Monoclinic- and Orthorhombic-Phase Lithium Manganese Oxide Cathodes.
Electrochemical and Solid-State Letters
, 2
(10)
, 490-490.
https://doi.org/10.1149/1.1390880
Identifiers
- DOI
- 10.1149/1.1390880