Ho2Mn2O7
Ho2Mn2O7 is a thermodynamically stable semiconducting oxide utilized in the study of oxygen-evolution catalysis.
About Ho2Mn2O7
Ho2Mn2O7 is a semiconducting oxide that sits firmly on the convex hull, indicating high thermodynamic stability. As a member of the complex oxide family, it is primarily investigated for its potential in electrochemical energy conversion processes where stable, active materials are required for efficient catalysis. Its structural integrity makes it a compelling subject for researchers aiming to optimize oxygen-evolution reaction performance. The material is characterized by its robust crystalline framework, which supports its role as a functional catalyst in experimental electrochemical systems. By leveraging its semiconducting nature, scientists can explore new pathways for charge transfer during the oxygen-evolution process, contributing to the broader development of sustainable energy technologies.
Key Properties
Cross-validated computational properties for Ho2Mn2O7, 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 Ho2Mn2O7, 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. |
|---|---|---|---|---|---|
| Fd-3m (No. 227) | cubic | 1.17 | 0.0000 | -8.554 | 7.63 |
| Fd-3m (No. 227) | — | — | — | — | — |
| Fd-3m (No. 227) | Cubic | — | — | — | 7.32 |
| Fd-3m (No. 227) | Cubic | — | — | — | 7.90 |
| Fd-3m (No. 227) | Cubic | — | — | — | 7.60 |
Applications
Where Ho2Mn2O7 is used.
Frequently Asked Questions
Common questions about Ho2Mn2O7, answered from cross-validated data.
What is Ho2Mn2O7?
Ho2Mn2O7 is a thermodynamically stable semiconducting oxide utilized in the study of oxygen-evolution catalysis.
What is Ho2Mn2O7 used for?
What is the band gap of Ho2Mn2O7?
Is Ho2Mn2O7 a metal, semiconductor, or insulator?
Is Ho2Mn2O7 thermodynamically stable?
What is the crystal structure of Ho2Mn2O7?
What is the density of Ho2Mn2O7?
How many polymorphs of Ho2Mn2O7 are known?
What elements does Ho2Mn2O7 contain?
Where does the data for Ho2Mn2O7 come from?
How It Compares
Within the oxide oxygen-evolution catalysts class.
Within the diverse class of oxygen-evolution catalysts, Ho2Mn2O7 distinguishes itself through its unique rare-earth holmium composition compared to the more common transition-metal-heavy oxides like LaMnO3 or NiO. While materials such as LiCoO2 and LiMn2O4 are widely recognized for their roles in battery storage, Ho2Mn2O7 offers a different structural geometry that provides a distinct alternative for catalytic surface studies.
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).
- nomad — Data from NOMAD. Cite: Draxl & Scheffler, J. Phys. Mater. 2, 036001 (2019).
- mpaloe — Data from mpaloe.
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