KFeO2
Potassium ferrite is an inorganic compound that serves as a precursor in the synthesis of various ceramic materials and catalysts. It is primarily studied for its structural properties and its role in solid-state chemistry research.
Key Properties
Cross-validated computational properties for KFeO2, 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 KFeO2, 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. |
|---|---|---|---|---|---|
| Pbca (No. 61) | orthorhombic | 2.14 | 0.0000 | -6.606 | 3.36 |
| P-1 (No. 2) | triclinic | 2.81 | 0.0446 | -6.562 | 3.03 |
| C2/m (No. 12) | monoclinic | 0.00 | 0.0498 | -6.556 | 3.20 |
| C2/m (No. 12) | Monoclinic | — | — | — | 3.20 |
| C2/m (No. 12) | Monoclinic | — | — | — | 3.20 |
| C2/m (No. 12) | Monoclinic | — | — | — | 3.21 |
| P-1 (No. 2) | Triclinic | — | — | — | 3.03 |
| Immm (No. 71) | Orthorhombic | — | — | — | 3.14 |
| Immm (No. 71) | Orthorhombic | — | — | — | 3.09 |
| Fd-3m (No. 227) | — | — | — | — | — |
| C2/m (No. 12) | — | — | — | — | — |
Synthesis Routes
Literature-extracted synthesis procedures targeting KFeO2.
Applications
Where KFeO2 is used.
Frequently Asked Questions
Common questions about KFeO2, answered from cross-validated data.
What is KFeO2?
Potassium ferrite is an inorganic compound that serves as a precursor in the synthesis of various ceramic materials and catalysts. It is primarily studied for its structural properties and its role in solid-state chemistry research.
What is KFeO2 used for?
What is the band gap of KFeO2?
Is KFeO2 a metal, semiconductor, or insulator?
Is KFeO2 thermodynamically stable?
What is the crystal structure of KFeO2?
What is the density of KFeO2?
How many polymorphs of KFeO2 are known?
How is KFeO2 synthesized?
What elements does KFeO2 contain?
Where does the data for KFeO2 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).
- mpaloe — Data from mpaloe.
- jarvis — Data from JARVIS (NIST). Cite: Choudhary et al., npj Comp. Mater. 6, 173 (2020).
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