Co2Fe2O4
Co2Fe2O4 is a semiconducting mixed-metal oxide used primarily as a catalyst for oxygen-evolution reactions in electrochemical systems.
About Co2Fe2O4
Co2Fe2O4 is a semiconducting oxide that serves as a functional material within the broader family of oxygen-evolution catalysts. Its structural configuration allows it to participate in complex electrochemical processes, making it a subject of interest for researchers focused on improving catalytic efficiency in energy conversion systems. The compound is characterized by its near-hull thermodynamic stability, suggesting it is a viable candidate for experimental synthesis and practical application. As a mixed-metal oxide, it leverages the synergistic effects of cobalt and iron to facilitate electron transfer during critical chemical reactions.
Key Properties
Cross-validated computational properties for Co2Fe2O4, 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 Co2Fe2O4, 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. |
|---|---|---|---|---|---|
| Imma (No. 74) | orthorhombic | 0.27 | 0.0170 | -7.495 | 6.10 |
| P63/mmc (No. 194) | hexagonal | 0.00 | 0.3473 | -7.412 | 5.57 |
| No. 0 | unknown | — | — | — | 1.76 |
| No. 0 | unknown | — | — | — | 1.78 |
| No. 0 | unknown | — | — | — | 1.77 |
| No. 0 | unknown | — | — | — | 1.77 |
| — | — | — | — | — | 4.99 |
Applications
Where Co2Fe2O4 is used.
Frequently Asked Questions
Common questions about Co2Fe2O4, answered from cross-validated data.
What is Co2Fe2O4?
Co2Fe2O4 is a semiconducting mixed-metal oxide used primarily as a catalyst for oxygen-evolution reactions in electrochemical systems.
What is Co2Fe2O4 used for?
What is the band gap of Co2Fe2O4?
Is Co2Fe2O4 a metal, semiconductor, or insulator?
Is Co2Fe2O4 thermodynamically stable?
What is the crystal structure of Co2Fe2O4?
What is the density of Co2Fe2O4?
How many polymorphs of Co2Fe2O4 are known?
What elements does Co2Fe2O4 contain?
Where does the data for Co2Fe2O4 come from?
How It Compares
Within the oxide oxygen-evolution catalysts class.
Within the diverse class of oxygen-evolution catalysts, Co2Fe2O4 occupies a distinct niche compared to well-known binary oxides like NiO or complex layered structures such as LiCoO2. While many members of this class are optimized for lithium-ion battery cathodes, Co2Fe2O4 is primarily investigated for its catalytic surface properties, positioning it closer to perovskite-type materials like LaMnO3 in terms of its functional utility for electrochemical water splitting.
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).
- cod — Data from the Crystallography Open Database. Cite: Grazulis et al., Nucleic Acids Res. 40, D420 (2012).
- omat24 — Data from OMat24 (Meta FAIR). Cite: Barroso-Luque et al., arXiv 2410.12771 (2024).
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