MgMn5O8
MgMn5O8 is a semiconducting oxide compound primarily researched for its potential as a catalyst in oxygen-evolution reactions.
About MgMn5O8
MgMn5O8 is a semiconducting oxide that serves as a specialized catalyst for oxygen-evolution reactions. Its structural configuration and electronic properties make it a subject of interest for researchers aiming to optimize electrochemical performance in energy-related processes.
As a near-hull stable compound, it occupies a favorable position for potential synthesis and experimental validation. Its role within the broader family of oxide catalysts highlights its utility in developing efficient, earth-abundant materials for catalytic applications.
Key Properties
Cross-validated computational properties for MgMn5O8, aggregated across 2 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 MgMn5O8, 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. |
|---|---|---|---|---|---|
| I-4m2 (No. 119) | tetragonal | 0.66 | 0.0193 | -8.390 | 4.33 |
| C2/m (No. 12) | monoclinic | 0.00 | 0.1041 | -8.306 | 4.28 |
| P1 (No. 1) | triclinic | 0.70 | 0.1268 | -8.283 | 4.15 |
| P1 (No. 1) | triclinic | 0.35 | 0.1322 | -8.278 | 4.27 |
| P1 (No. 1) | Triclinic | — | — | — | 4.27 |
| I-4m2 (No. 119) | Tetragonal | — | — | — | 4.76 |
| I-4m2 (No. 119) | Tetragonal | — | — | — | 4.33 |
| I-4m2 (No. 119) | Tetragonal | — | — | — | 4.54 |
| P1 (No. 1) | Triclinic | — | — | — | 4.46 |
| P1 (No. 1) | Triclinic | — | — | — | 4.55 |
| P1 (No. 1) | Triclinic | — | — | — | 4.65 |
| C2/m (No. 12) | Monoclinic | — | — | — | 4.53 |
Applications
Where MgMn5O8 is used.
Frequently Asked Questions
Common questions about MgMn5O8, answered from cross-validated data.
What is MgMn5O8?
MgMn5O8 is a semiconducting oxide compound primarily researched for its potential as a catalyst in oxygen-evolution reactions.
What is MgMn5O8 used for?
What is the band gap of MgMn5O8?
Is MgMn5O8 a metal, semiconductor, or insulator?
Is MgMn5O8 thermodynamically stable?
What is the crystal structure of MgMn5O8?
What is the density of MgMn5O8?
How many polymorphs of MgMn5O8 are known?
What elements does MgMn5O8 contain?
Where does the data for MgMn5O8 come from?
How It Compares
Within the oxide oxygen-evolution catalysts class.
Compared to well-established battery materials like LiMn2O4 and LiCoO2, MgMn5O8 represents a more niche oxide structure within the oxygen-evolution catalyst class. While materials such as LaMnO3 are frequently studied for their perovskite-based catalytic activity, MgMn5O8 offers a distinct structural framework that broadens the design space for non-precious metal 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).
- mpaloe — Data from mpaloe.
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