CoTe2O5
CoTe2O5 is a semiconducting cobalt tellurite oxide investigated for its potential role in electrochemical catalysis.
About CoTe2O5
CoTe2O5 is a semiconducting tellurite oxide that occupies a unique position within the broader family of oxygen-evolution catalysts. Its electronic structure and near-hull thermodynamic stability suggest it is a viable candidate for synthesis and subsequent experimental evaluation in catalytic environments.
This material is of interest to researchers exploring non-traditional oxide catalysts for water splitting and other electrochemical processes. By leveraging its specific cobalt-tellurium-oxygen framework, scientists aim to optimize charge transfer and surface reactivity for improved catalytic performance.
Key Properties
Cross-validated computational properties for CoTe2O5, 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 CoTe2O5, 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. |
|---|---|---|---|---|---|
| Pnma (No. 62) | orthorhombic | 2.50 | 0.0105 | -6.238 | 5.42 |
| Pbcn (No. 60) | orthorhombic | 2.23 | 0.0169 | -6.231 | 5.79 |
| P42/nbc (No. 133) | tetragonal | 2.37 | 0.0409 | -6.207 | 5.29 |
| Pbcn (No. 60) | Orthorhombic | — | — | — | 5.43 |
| Pbcn (No. 60) | Orthorhombic | — | — | — | 5.80 |
| Pbcn (No. 60) | Orthorhombic | — | — | — | 5.56 |
| No. 0 | unknown | — | — | — | 0.39 |
Applications
Where CoTe2O5 is used.
Frequently Asked Questions
Common questions about CoTe2O5, answered from cross-validated data.
What is CoTe2O5?
CoTe2O5 is a semiconducting cobalt tellurite oxide investigated for its potential role in electrochemical catalysis.
What is CoTe2O5 used for?
What is the band gap of CoTe2O5?
Is CoTe2O5 a metal, semiconductor, or insulator?
Is CoTe2O5 thermodynamically stable?
What is the crystal structure of CoTe2O5?
What is the density of CoTe2O5?
How many polymorphs of CoTe2O5 are known?
What elements does CoTe2O5 contain?
Where does the data for CoTe2O5 come from?
How It Compares
Within the oxide oxygen-evolution catalysts class.
Unlike the well-established lithium-based transition metal oxides such as LiCoO2 and LiMn2O4, which are primarily utilized for their intercalation properties in battery cathodes, CoTe2O5 represents a more specialized class of tellurite-based materials. While perovskite-structured oxides like LaMnO3 and LaNiO3 are frequently studied for their high catalytic activity, CoTe2O5 offers a distinct structural motif that may provide alternative pathways for oxygen evolution reactions.
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.
- cod — Data from the Crystallography Open Database. Cite: Grazulis et al., Nucleic Acids Res. 40, D420 (2012).
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