CuMn2O4
Copper manganese oxide · Copper manganite
CuMn2O4 is a metastable copper manganese oxide that functions as a metallic catalyst for oxygen-evolution reactions.
About Copper manganese oxide
CuMn2O4 is a complex oxide belonging to the transition metal oxide family, characterized by its metallic electronic nature. As a metastable material, it offers unique structural flexibility that influences its catalytic activity in electrochemical environments.
This compound is primarily investigated for its role in oxygen-evolution catalysis. Its ability to facilitate electron transfer due to its metallic character makes it a candidate for developing efficient electrodes in energy conversion and storage technologies.
Key Properties
Cross-validated computational properties for Copper manganese oxide, 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.
Cross-Source DFT Agreement
How well independent DFT databases agree on the thermodynamics of CuMn2O4. Tight agreement means computed properties can be trusted without re-running calculations.
Agreement ScoreA normalized confidence score summarizing how closely independent DFT databases agree. Higher scores mean tighter cross-source agreement.
Hull SpreadDifference between the highest and lowest energy-above-hull values reported by comparable sources. Smaller spread means less thermodynamic disagreement.
Sources ComparedNumber and names of computational sources with comparable entries for this formula.
Space Group ConsensusWhether independent sources predict the same crystal symmetry for the lowest-energy structure.
Reported Structures
Lowest-energy structures reported for CuMn2O4, 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. |
|---|---|---|---|---|---|
| C2/m (No. 12) | monoclinic | 0.00 | 0.0293 | -7.709 | 5.12 |
| Cm (No. 8) | monoclinic | 0.00 | 0.0394 | -7.699 | 5.06 |
| Fd-3m (No. 227) | cubic | 0.00 | 0.0427 | -7.696 | 5.10 |
| R-3m (No. 166) | trigonal | 0.00 | 0.0497 | -7.689 | 5.21 |
| I41/amd (No. 141) | tetragonal | 0.00 | 0.0510 | -7.688 | 5.15 |
| Imma (No. 74) | orthorhombic | 0.00 | 0.0571 | -7.682 | 5.34 |
| Cm (No. 8) | monoclinic | 0.00 | 0.0585 | -7.680 | 5.12 |
| Imma (No. 74) | orthorhombic | 0.00 | 0.0605 | -7.678 | 4.98 |
| P3m1 (No. 156) | trigonal | 0.00 | 0.0641 | -7.675 | 5.03 |
| Cm (No. 8) | monoclinic | 0.00 | 0.0665 | -7.672 | 5.02 |
| R3m (No. 160) | trigonal | 0.00 | 0.0716 | -7.667 | 5.08 |
| Imma (No. 74) | orthorhombic | 0.00 | 0.0765 | -7.662 | 5.03 |
Synthesis Routes
Literature-extracted synthesis procedures targeting CuMn2O4.
Applications
Where Copper manganese oxide is used.
Frequently Asked Questions
Common questions about Copper manganese oxide, answered from cross-validated data.
What is CuMn2O4?
CuMn2O4 is a metastable copper manganese oxide that functions as a metallic catalyst for oxygen-evolution reactions.
What is CuMn2O4 used for?
What is the band gap of CuMn2O4?
Is CuMn2O4 a metal, semiconductor, or insulator?
Is CuMn2O4 thermodynamically stable?
What is the crystal structure of CuMn2O4?
What is the density of CuMn2O4?
How many polymorphs of CuMn2O4 are known?
How is CuMn2O4 synthesized?
What elements does CuMn2O4 contain?
Where does the data for CuMn2O4 come from?
How It Compares
Within the oxide oxygen-evolution catalysts class.
Within the diverse class of oxygen-evolution catalysts, CuMn2O4 distinguishes itself through its metallic electronic state, contrasting with the more insulating or semiconducting nature of materials like NiO. While it shares the spinel-related structural complexity found in LiMn2O4, its specific transition metal configuration provides a distinct pathway for surface reactivity compared to perovskite-structured counterparts 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).
- cod — Data from the Crystallography Open Database. Cite: Grazulis et al., Nucleic Acids Res. 40, D420 (2012).
- omat24 — Data from OMat24 (Meta FAIR). Cite: Barroso-Luque et al., arXiv 2410.12771 (2024).
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