Zn2Co3O8
Zn2Co3O8 is a semiconducting cobalt-zinc oxide catalyst that is considered a viable candidate for oxygen-evolution reactions in electrochemical systems.
About Zn2Co3O8
Zn2Co3O8 is a complex oxide belonging to the class of oxygen-evolution catalysts. As a semiconducting material, it possesses electronic properties that are highly relevant for electrochemical charge transfer processes, particularly in applications requiring efficient catalytic activity for water splitting or related oxidation reactions.
This compound is characterized by its position near the thermodynamic hull, suggesting it is a stable phase that is likely synthesizable under appropriate laboratory conditions. With multiple reported structures across various databases, it represents a significant, albeit specialized, candidate for researchers seeking to optimize catalyst performance through structural tuning.
Key Properties
Cross-validated computational properties for Zn2Co3O8, 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 Zn2Co3O8, 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. |
|---|---|---|---|---|---|
| P63mc (No. 186) | hexagonal | 0.00 | 0.0236 | -6.181 | 5.18 |
| C2/m (No. 12) | monoclinic | 0.48 | 0.0403 | -6.164 | 5.55 |
| P1 (No. 1) | triclinic | 0.02 | 0.0637 | -6.141 | 5.33 |
| C2/m (No. 12) | — | — | — | — | — |
| P1 (No. 1) | Triclinic | — | — | — | 5.33 |
| P1 (No. 1) | Triclinic | — | — | — | 5.97 |
| C2/m (No. 12) | Monoclinic | — | — | — | 5.95 |
| C2/m (No. 12) | Monoclinic | — | — | — | 5.73 |
| P1 (No. 1) | Triclinic | — | — | — | 5.71 |
| C2/m (No. 12) | Monoclinic | — | — | — | 5.55 |
Applications
Where Zn2Co3O8 is used.
Frequently Asked Questions
Common questions about Zn2Co3O8, answered from cross-validated data.
What is Zn2Co3O8?
Zn2Co3O8 is a semiconducting cobalt-zinc oxide catalyst that is considered a viable candidate for oxygen-evolution reactions in electrochemical systems.
What is Zn2Co3O8 used for?
What is the band gap of Zn2Co3O8?
Is Zn2Co3O8 a metal, semiconductor, or insulator?
Is Zn2Co3O8 thermodynamically stable?
What is the crystal structure of Zn2Co3O8?
What is the density of Zn2Co3O8?
How many polymorphs of Zn2Co3O8 are known?
What elements does Zn2Co3O8 contain?
Where does the data for Zn2Co3O8 come from?
How It Compares
Within the oxide oxygen-evolution catalysts class.
Within the diverse family of oxygen-evolution catalysts, Zn2Co3O8 occupies a unique niche compared to more traditional, widely studied oxides like LiCoO2 or LaMnO3. While many of its class members rely on specific transition metal frameworks to drive catalytic activity, Zn2Co3O8 leverages a distinct zinc-cobalt oxide architecture that offers a different electronic landscape for oxygen-evolution processes than the standard perovskite or spinel structures seen in materials like LaNiO3 or LiMn2O4.
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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