CoBiO4
CoBiO4 is a metastable semiconducting oxide utilized primarily as a catalyst for oxygen-evolution reactions in electrochemical applications.
About CoBiO4
CoBiO4 is a semiconducting oxide that functions as a specialized catalyst for the oxygen-evolution reaction. Its electronic structure and chemical composition make it a subject of interest for researchers investigating efficient water-splitting technologies and electrochemical energy conversion systems. As a metastable phase, it represents a unique structural configuration within the broader family of bismuth-cobalt oxides. Its potential utility is driven by the interplay between its transition metal centers and the surrounding oxygen lattice, which facilitates the charge transfer processes necessary for catalytic activity.
Key Properties
Cross-validated computational properties for CoBiO4, 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 CoBiO4, 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 | 0.51 | 0.0507 | -6.355 | 6.63 |
| Imma (No. 74) | — | — | — | — | — |
| Imma (No. 74) | Orthorhombic | — | — | — | 7.06 |
| Imma (No. 74) | Orthorhombic | — | — | — | 6.63 |
| Imma (No. 74) | Orthorhombic | — | — | — | 6.81 |
Applications
Where CoBiO4 is used.
Frequently Asked Questions
Common questions about CoBiO4, answered from cross-validated data.
What is CoBiO4?
CoBiO4 is a metastable semiconducting oxide utilized primarily as a catalyst for oxygen-evolution reactions in electrochemical applications.
What is CoBiO4 used for?
What is the band gap of CoBiO4?
Is CoBiO4 a metal, semiconductor, or insulator?
Is CoBiO4 thermodynamically stable?
What is the crystal structure of CoBiO4?
What is the density of CoBiO4?
How many polymorphs of CoBiO4 are known?
What elements does CoBiO4 contain?
Where does the data for CoBiO4 come from?
How It Compares
Within the oxide oxygen-evolution catalysts class.
Within the diverse group of oxygen-evolution catalysts, CoBiO4 occupies a distinct niche compared to more conventional materials like NiO or LiCoO2. While many members of this class, such as the layered perovskite La2NiO4 or the spinel LiMn2O4, are characterized by their robust thermodynamic stability and well-understood intercalation properties, CoBiO4 offers a different structural landscape that challenges traditional design paradigms in electrocatalysis.
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).
- jarvis — Data from JARVIS (NIST). Cite: Choudhary et al., npj Comp. Mater. 6, 173 (2020).
- mpaloe — Data from mpaloe.
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