Li2Al2P2O9F
Li2Al2P2O9F has a DFT band gap of 0.35 eV across 2 reported structures in 1 space group; its lowest-energy polymorph is triclinic (P1 (No. 1)). Cross-validated across 2 computational databases.
At a glance
Key Properties
Cross-validated computational properties for Li2Al2P2O9F, aggregated across 2 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.
0.35 eV
Range across DFT structures
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.
0.063 eV/atom
Best (lowest) across sources
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.
Metastable
1 DFT source
StructuresCount of reported calculated crystal structures for this formula, including alternate polymorphs, source databases, and observed space groups.
2
2 databases, 1 space group
Crystallography
Reported Structures
Lowest-energy structures reported for Li2Al2P2O9F, 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. |
|---|---|---|---|---|---|
| P1 (No. 1) | triclinic | 0.35 | 0.0629 | -7.213 | 2.94 |
| P1 (No. 1) | — | — | — | — | — |
Reference
Frequently Asked Questions
Common questions about Li2Al2P2O9F, answered from cross-validated data.
What is the band gap of Li2Al2P2O9F?
Li2Al2P2O9F has a DFT-computed band gap of 0.35 eV across 2 reported structures.
More questions
Is Li2Al2P2O9F a metal, semiconductor, or insulator?
With a band gap up to 0.35 eV it is a semiconductor.
Is Li2Al2P2O9F thermodynamically stable?
Li2Al2P2O9F has a lowest energy above hull of 0.063 eV/atom (metastable).
What is the crystal structure of Li2Al2P2O9F?
The lowest-energy reported polymorph of Li2Al2P2O9F is triclinic symmetry, space group P1 (No. 1).
What is the density of Li2Al2P2O9F?
The computed density of the ground-state structure of Li2Al2P2O9F is 2.94 g/cm³.
How many polymorphs of Li2Al2P2O9F are known?
2 structures of Li2Al2P2O9F are reported across 2 databases, spanning 1 distinct space group.
What elements does Li2Al2P2O9F contain?
Li2Al2P2O9F contains Al, F, Li, O, and P (5 elements).
Where does the data for Li2Al2P2O9F come from?
Li2Al2P2O9F data is cross-referenced from materials_project, jarvis.
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Related Compounds
Other NASICON-Type Electrolytes in the database.
Data sources & attribution
- materials_project — Data from the Materials Project. Cite: Jain et al., APL Materials 1, 011002 (2013).
- jarvis — Data from JARVIS (NIST). Cite: Choudhary et al., npj Comp. Mater. 6, 173 (2020).
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