Al20Li4O32
Al20Li4O32 is a thermodynamically stable, insulating lithium aluminum oxide used in materials research.
About Al20Li4O32
Al20Li4O32 is a thermodynamically stable oxide that functions as a wide-band-gap insulator. Its structural configuration within the layered lithium transition-metal oxide family makes it a subject of interest for fundamental materials research regarding lithium-based ionic frameworks.
Because it resides on the convex hull, this compound exhibits significant thermodynamic stability. Its insulating nature distinguishes it from more conductive members of its class, positioning it as a specialized material for studies involving dielectric properties and structural stability in lithium-rich environments.
Key Properties
Cross-validated computational properties for Al20Li4O32, aggregated across 3 databases.
Band GapEnergy needed to move an electron from the valence band to the conduction band. Lower or zero values tend to behave more metallic; larger gaps are more insulating or semiconducting.
Energy Above HullThermodynamic distance from the most stable set of competing phases. 0 eV/atom is on the convex hull; small positive values may still be experimentally accessible.
StabilityA plain-language summary of the best reported energy-above-hull result. It reflects whether the lowest-energy structure is on, near, or far from the stability hull.
StructuresCount of reported calculated crystal structures for this formula, including alternate polymorphs, source databases, and observed space groups.
Reported Structures
Lowest-energy structures reported for Al20Li4O32, ranked by energy above hull.
| Space GroupSymmetry classification of the crystal arrangement. The number is the international space-group index. | Crystal SystemBroad lattice family, such as cubic, tetragonal, monoclinic, or triclinic, derived from unit-cell symmetry. | Band Gap (eV)Electronic gap calculated for this specific reported structure, measured in electronvolts. | E above hull (eV/atom)Thermodynamic distance from the convex hull for this structure, normalized per atom. Lower is generally more stable. | E/atom (eV)Computed total energy normalized per atom. Use energy above hull, not this value alone, when comparing stability. | Density (g/cm³)Mass per relaxed crystal volume, reported in grams per cubic centimeter. |
|---|---|---|---|---|---|
| P4332 (No. 212) | cubic | 5.52 | 0.0000 | -7.652 | 3.64 |
| — | — | — | — | — | 3.52 |
| P4332 (No. 212) | — | — | — | — | — |
Applications
Where Al20Li4O32 is used.
Frequently Asked Questions
Common questions about Al20Li4O32, answered from cross-validated data.
What is Al20Li4O32?
Al20Li4O32 is a thermodynamically stable, insulating lithium aluminum oxide used in materials research.
What is Al20Li4O32 used for?
What is the band gap of Al20Li4O32?
Is Al20Li4O32 a metal, semiconductor, or insulator?
Is Al20Li4O32 thermodynamically stable?
What is the crystal structure of Al20Li4O32?
What is the density of Al20Li4O32?
How many polymorphs of Al20Li4O32 are known?
What elements does Al20Li4O32 contain?
Where does the data for Al20Li4O32 come from?
How It Compares
Within the layered lithium transition-metal oxides class.
Unlike the highly conductive and electrochemically active LiNiO2 or LiCoO2, which are staples in battery cathode technology, Al20Li4O32 acts as a wide-band-gap insulator. While its siblings are frequently utilized for their redox capabilities, this compound is characterized by its structural robustness and lack of electronic conductivity, making it a distinct member of the lithium-oxide family.
Related Compounds
Other Layered Lithium Transition-Metal Oxides in the database.
Data sources & attribution
- materials_project — Data from the Materials Project. Cite: Jain et al., APL Materials 1, 011002 (2013).
- omat24 — Data from OMat24 (Meta FAIR). Cite: Barroso-Luque et al., arXiv 2410.12771 (2024).
- nomad — Data from NOMAD. Cite: Draxl & Scheffler, J. Phys. Mater. 2, 036001 (2019).
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