Li2FeO2
This compound is a lithium-based iron oxide material primarily investigated for its potential role in electrochemical energy storage systems. It is studied as a cathode material candidate due to its ability to facilitate the movement of ions within a solid-state structure.
Key Properties
Cross-validated computational properties for Li2FeO2, 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 Li2FeO2, 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. |
|---|---|---|---|---|---|
| Immm (No. 71) | orthorhombic | 1.90 | 0.0020 | -6.315 | 3.15 |
| C2/m (No. 12) | monoclinic | 3.14 | 0.0437 | -6.273 | 3.63 |
| P21/c (No. 14) | monoclinic | 3.04 | 0.0443 | -6.272 | 3.66 |
| P-3m1 (No. 164) | trigonal | 2.92 | 0.0547 | -6.262 | 3.65 |
| Fddd (No. 70) | orthorhombic | 0.00 | 0.0626 | -7.098 | 3.35 |
| P1 (No. 1) | triclinic | 0.00 | 0.0760 | -7.084 | 3.21 |
| Cmce (No. 64) | orthorhombic | 0.00 | 0.0936 | -7.067 | 3.11 |
| C2/m (No. 12) | monoclinic | 0.00 | 0.1268 | -7.034 | 3.55 |
| P-1 (No. 2) | triclinic | 0.00 | 0.1346 | -7.164 | 3.09 |
| Cc (No. 9) | monoclinic | 0.00 | 0.2185 | -6.942 | 3.67 |
| P-3m1 (No. 164) | — | — | — | — | — |
| Immm (No. 71) | — | — | — | — | — |
Applications
Where Li2FeO2 is used.
Frequently Asked Questions
Common questions about Li2FeO2, answered from cross-validated data.
What is Li2FeO2?
This compound is a lithium-based iron oxide material primarily investigated for its potential role in electrochemical energy storage systems. It is studied as a cathode material candidate due to its ability to facilitate the movement of ions within a solid-state structure.
What is Li2FeO2 used for?
What is the band gap of Li2FeO2?
Is Li2FeO2 a metal, semiconductor, or insulator?
Is Li2FeO2 thermodynamically stable?
What is the crystal structure of Li2FeO2?
What is the density of Li2FeO2?
How many polymorphs of Li2FeO2 are known?
What elements does Li2FeO2 contain?
Where does the data for Li2FeO2 come from?
Related Compounds
Other Oxide Oxygen-Evolution Catalysts 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).
- mpaloe — Data from mpaloe.
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