Co5SbO8
Co5SbO8 is a stable, semiconducting cobalt-antimony oxide used primarily in the study of oxygen-evolution catalysis.
About Co5SbO8
Co5SbO8 is a semiconducting oxide that sits firmly on the thermodynamic convex hull, indicating high structural stability. As a member of the oxygen-evolution catalyst class, it provides a robust framework for electrochemical processes where charge transport and surface stability are critical for performance. Its complex stoichiometry allows for unique electronic configurations that are highly sought after in advanced catalytic research. The material has garnered significant interest in the scientific community, evidenced by its presence across multiple structural databases and its potential for tuning catalytic activity through its specific cobalt-antimony-oxygen arrangement.
Key Properties
Cross-validated computational properties for Co5SbO8, 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 Co5SbO8, 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. |
|---|---|---|---|---|---|
| R-3m (No. 166) | trigonal | 0.00 | 0.0000 | -7.157 | 6.01 |
| C2/c (No. 15) | monoclinic | 0.64 | 0.0110 | -7.146 | 5.67 |
| C2/c (No. 15) | monoclinic | 0.21 | 0.0115 | -7.145 | 5.70 |
| C2/c (No. 15) | monoclinic | 0.07 | 0.0173 | -7.140 | 5.65 |
| C2/m (No. 12) | monoclinic | 0.25 | 0.0327 | -7.124 | 6.13 |
| C2/m (No. 12) | monoclinic | 0.59 | 0.0673 | -7.090 | 6.17 |
| R-3m (No. 166) | Trigonal | — | — | — | 5.68 |
| R-3m (No. 166) | Trigonal | — | — | — | 6.51 |
| R-3m (No. 166) | Trigonal | — | — | — | 6.15 |
| R-3m (No. 166) | — | — | — | — | — |
| R-3m (No. 166) | — | — | — | — | — |
Applications
Where Co5SbO8 is used.
Frequently Asked Questions
Common questions about Co5SbO8, answered from cross-validated data.
What is Co5SbO8?
Co5SbO8 is a stable, semiconducting cobalt-antimony oxide used primarily in the study of oxygen-evolution catalysis.
What is Co5SbO8 used for?
What is the band gap of Co5SbO8?
Is Co5SbO8 a metal, semiconductor, or insulator?
Is Co5SbO8 thermodynamically stable?
What is the crystal structure of Co5SbO8?
What is the density of Co5SbO8?
How many polymorphs of Co5SbO8 are known?
What elements does Co5SbO8 contain?
Where does the data for Co5SbO8 come from?
How It Compares
Within the oxide oxygen-evolution catalysts class.
Unlike the well-known layered battery cathode materials such as LiCoO2 or LiNiO2, Co5SbO8 functions primarily as a catalyst for oxygen evolution rather than as an ion-intercalation host. While perovskite-structured oxides like LaMnO3 or LaNiO3 are frequently studied for their surface reactivity, Co5SbO8 offers a distinct structural motif that differentiates it from the simpler binary oxides like NiO, providing a unique platform for studying multimetallic oxide catalysis.
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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