Mn2GeO4
Mn2GeO4 is a stable, semiconducting oxide material utilized in the study of electrochemical oxygen-evolution catalysis.
About Mn2GeO4
Mn2GeO4 is a semiconducting oxide that sits firmly on the thermodynamic convex hull, indicating high stability in its crystalline form. As a member of the oxygen-evolution catalyst class, it provides a unique structural framework for studying electrochemical water splitting and related energy conversion processes.
With numerous reported structures across major databases, this compound is a subject of significant interest for materials scientists exploring complex oxide behavior. Its electronic properties and stable configuration make it a valuable candidate for investigating catalytic activity in electrochemical environments.
Key Properties
Cross-validated computational properties for Mn2GeO4, 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 Mn2GeO4, 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. |
|---|---|---|---|---|---|
| Pnma (No. 62) | orthorhombic | 1.08 | 0.0000 | -8.220 | 4.80 |
| Imma (No. 74) | orthorhombic | 0.00 | 0.0312 | -8.189 | 4.90 |
| Pbam (No. 55) | orthorhombic | 0.88 | 0.0675 | -8.153 | 5.40 |
| Pnma (No. 62) | — | — | — | — | — |
| Pbam (No. 55) | — | — | — | — | — |
| Pnma (No. 62) | Orthorhombic | — | — | — | 4.60 |
| Pnma (No. 62) | Orthorhombic | — | — | — | 4.91 |
| Pbam (No. 55) | Orthorhombic | — | — | — | 5.87 |
| Imma (No. 74) | Orthorhombic | — | — | — | 4.90 |
| Pnma (No. 62) | Orthorhombic | — | — | — | 4.75 |
| Pbam (No. 55) | Orthorhombic | — | — | — | 5.40 |
| Pbam (No. 55) | Orthorhombic | — | — | — | 5.64 |
Applications
Where Mn2GeO4 is used.
Frequently Asked Questions
Common questions about Mn2GeO4, answered from cross-validated data.
What is Mn2GeO4?
Mn2GeO4 is a stable, semiconducting oxide material utilized in the study of electrochemical oxygen-evolution catalysis.
What is Mn2GeO4 used for?
What is the band gap of Mn2GeO4?
Is Mn2GeO4 a metal, semiconductor, or insulator?
Is Mn2GeO4 thermodynamically stable?
What is the crystal structure of Mn2GeO4?
What is the density of Mn2GeO4?
How many polymorphs of Mn2GeO4 are known?
What elements does Mn2GeO4 contain?
Where does the data for Mn2GeO4 come from?
How It Compares
Within the oxide oxygen-evolution catalysts class.
Within the diverse group of oxygen-evolution catalysts, Mn2GeO4 offers a distinct alternative to more common transition metal oxides like NiO or the layered lithium-based structures such as LiCoO2 and LiMn2O4. While many of its siblings in this class are heavily utilized in battery cathodes or perovskite-based catalysis, Mn2GeO4 provides a unique germanium-containing structural motif that differentiates it from the standard binary or simple perovskite oxides like LaMnO3.
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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