Mn8Nb4O18
Mn8Nb4O18 is a stable, semiconducting manganese niobium oxide used in the development of advanced oxygen-evolution catalysts.
About Mn8Nb4O18
Mn8Nb4O18 is a complex oxide that functions as a semiconductor, positioning it as a subject of interest for catalytic applications. Its thermodynamic stability on the convex hull suggests a robust structural framework that is well-suited for rigorous experimental investigation.
This compound is primarily studied within the context of oxygen-evolution catalysts, where its electronic properties are leveraged to facilitate electrochemical reactions. With multiple reported structures across databases, it represents a versatile platform for exploring transition metal oxide behavior in energy conversion systems.
Key Properties
Cross-validated computational properties for Mn8Nb4O18, 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 Mn8Nb4O18, 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. |
|---|---|---|---|---|---|
| P-3c1 (No. 165) | trigonal | 0.02 | 0.0000 | -9.300 | 5.23 |
| Cc (No. 9) | monoclinic | 2.02 | 0.0288 | -9.272 | 4.99 |
| — | — | — | — | — | 3.25 |
| P-3c1 (No. 165) | — | — | — | — | — |
| P-3c1 (No. 165) | — | — | — | — | — |
| P-3c1 (No. 165) | — | — | — | — | — |
Applications
Where Mn8Nb4O18 is used.
Frequently Asked Questions
Common questions about Mn8Nb4O18, answered from cross-validated data.
What is Mn8Nb4O18?
Mn8Nb4O18 is a stable, semiconducting manganese niobium oxide used in the development of advanced oxygen-evolution catalysts.
What is Mn8Nb4O18 used for?
What is the band gap of Mn8Nb4O18?
Is Mn8Nb4O18 a metal, semiconductor, or insulator?
Is Mn8Nb4O18 thermodynamically stable?
What is the crystal structure of Mn8Nb4O18?
What is the density of Mn8Nb4O18?
How many polymorphs of Mn8Nb4O18 are known?
What elements does Mn8Nb4O18 contain?
Where does the data for Mn8Nb4O18 come from?
How It Compares
Within the oxide oxygen-evolution catalysts class.
Unlike more conventional battery-cathode materials such as LiCoO2 or LiMn2O4, Mn8Nb4O18 occupies a distinct niche within the broader family of oxide catalysts. While materials like LaMnO3 are widely utilized for their perovskite-based catalytic activity, Mn8Nb4O18 offers a unique structural alternative that expands the design space for stable, semiconducting oxygen-evolution catalysts.
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).
- omat24 — Data from OMat24 (Meta FAIR). Cite: Barroso-Luque et al., arXiv 2410.12771 (2024).
- aflow — Data from AFLOW. Cite: Curtarolo et al., Comp. Mater. Sci. 58, 218 (2012).
Analyze Mn8Nb4O18 in the Lattice Graph platform
Polymorph comparison, confidence scoring, supply-chain risk, and patent monitoring — across 53 integrated data sources.
Explore the Platform →