Fe2O8W2
Fe2O8W2 is a thermodynamically stable semiconducting oxide used as a catalyst for oxygen-evolution reactions.
About Fe2O8W2
Fe2O8W2 is a semiconducting oxide that sits firmly on the convex hull, indicating exceptional thermodynamic stability. As a member of the oxygen-evolution catalyst class, it provides a robust structural framework that is essential for facilitating complex electrochemical reactions at the atomic scale.
Its structural diversity, evidenced by numerous reported configurations across multiple databases, makes it a subject of significant interest for researchers. By balancing iron and tungsten within an oxygen-rich lattice, this compound serves as a critical candidate for advancing efficient energy conversion technologies.
Key Properties
Cross-validated computational properties for Fe2O8W2, 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 Fe2O8W2, 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. |
|---|---|---|---|---|---|
| P2/c (No. 13) | monoclinic | 2.40 | 0.0000 | -8.893 | 7.61 |
| C2/c (No. 15) | monoclinic | 0.00 | 0.1353 | -8.571 | 6.50 |
| P2/c (No. 13) | monoclinic | 0.00 | 0.1601 | -8.546 | 6.56 |
| P2/c (No. 13) | — | — | — | — | — |
| P2/c (No. 13) | — | — | — | — | — |
| P2/c (No. 13) | — | — | — | — | — |
| P2/c (No. 13) | — | — | — | — | — |
| P2/c (No. 13) | — | — | — | — | — |
| — | — | — | — | — | 4.81 |
Applications
Where Fe2O8W2 is used.
Frequently Asked Questions
Common questions about Fe2O8W2, answered from cross-validated data.
What is Fe2O8W2?
Fe2O8W2 is a thermodynamically stable semiconducting oxide used as a catalyst for oxygen-evolution reactions.
What is Fe2O8W2 used for?
What is the band gap of Fe2O8W2?
Is Fe2O8W2 a metal, semiconductor, or insulator?
Is Fe2O8W2 thermodynamically stable?
What is the crystal structure of Fe2O8W2?
What is the density of Fe2O8W2?
How many polymorphs of Fe2O8W2 are known?
What elements does Fe2O8W2 contain?
Where does the data for Fe2O8W2 come from?
How It Compares
Within the oxide oxygen-evolution catalysts class.
Unlike the widely utilized lithium-based intercalation oxides such as LiCoO2 or LiMn2O4, Fe2O8W2 functions primarily as a stable catalyst rather than a battery cathode material. While it shares the oxide classification with perovskites like LaMnO3 and BiFeO3, its distinct iron-tungsten composition offers a unique electronic profile that differentiates it from the transition-metal-only or lanthanide-doped frameworks common in the field.
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).
- aflow — Data from AFLOW. Cite: Curtarolo et al., Comp. Mater. Sci. 58, 218 (2012).
- omat24 — Data from OMat24 (Meta FAIR). Cite: Barroso-Luque et al., arXiv 2410.12771 (2024).
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