MnGeO3
MnGeO3 is a thermodynamically stable semiconducting oxide used in the study of oxygen-evolution catalysis.
About MnGeO3
MnGeO3 is a semiconducting oxide that functions as a catalyst for the oxygen-evolution reaction. As a thermodynamically stable phase located on the convex hull, it represents a robust material candidate for electrochemical energy conversion processes. Its unique electronic structure makes it a subject of interest for researchers seeking to optimize catalytic performance in aqueous environments. The material has been extensively characterized, with numerous documented structural variations across major material databases, highlighting its versatility in solid-state chemistry. These structural insights are vital for understanding how its atomic arrangement influences catalytic activity and long-term stability during operation.
Key Properties
Cross-validated computational properties for MnGeO3, aggregated across 4 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 MnGeO3, 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-3 (No. 148) | trigonal | 1.67 | 0.0000 | -7.862 | 5.59 |
| C2/c (No. 15) | monoclinic | 1.14 | 0.0122 | -7.849 | 4.94 |
| Pbca (No. 61) | orthorhombic | 1.31 | 0.0149 | -7.847 | 4.81 |
| C2/c (No. 15) | monoclinic | 1.44 | 0.1421 | -7.247 | 4.67 |
| P21/c (No. 14) | monoclinic | 0.73 | 0.1703 | -7.219 | 4.52 |
| R-3 (No. 148) | — | — | — | — | — |
| R-3 (No. 148) | Trigonal | — | — | — | 5.78 |
| No. 0 | unknown | — | — | — | 0.60 |
| R-3 (No. 148) | Trigonal | — | — | — | 5.35 |
| R-3 (No. 148) | Trigonal | — | — | — | 5.56 |
| C2/c (No. 15) | Monoclinic | — | — | — | 4.87 |
| C2/c (No. 15) | — | — | — | — | — |
Applications
Where MnGeO3 is used.
Frequently Asked Questions
Common questions about MnGeO3, answered from cross-validated data.
What is MnGeO3?
MnGeO3 is a thermodynamically stable semiconducting oxide used in the study of oxygen-evolution catalysis.
What is MnGeO3 used for?
What is the band gap of MnGeO3?
Is MnGeO3 a metal, semiconductor, or insulator?
Is MnGeO3 thermodynamically stable?
What is the crystal structure of MnGeO3?
What is the density of MnGeO3?
How many polymorphs of MnGeO3 are known?
What elements does MnGeO3 contain?
Where does the data for MnGeO3 come from?
How It Compares
Within the oxide oxygen-evolution catalysts class.
Within the diverse family of oxide oxygen-evolution catalysts, MnGeO3 occupies a distinct position compared to more traditional transition metal oxides like LaMnO3 or NiO. While many class members rely on complex perovskite architectures, MnGeO3 offers a different structural framework that provides a stable alternative for catalytic applications, balancing its electronic properties differently than the highly conductive or redox-active lithium-based oxides such as LiCoO2 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.
- cod — Data from the Crystallography Open Database. Cite: Grazulis et al., Nucleic Acids Res. 40, D420 (2012).
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