NaMn3O4
NaMn3O4 is a metastable, semimetallic layered oxide containing sodium and manganese that is researched for its potential in electrochemical energy storage devices.
About NaMn3O4
NaMn3O4 belongs to the family of layered sodium transition-metal oxides, characterized by its unique structural arrangement and semimetallic electronic behavior. As a metastable phase, it represents a complex coordination of manganese and oxygen layers that are critical for understanding ion transport mechanisms in solid-state systems.
This compound is primarily investigated for its potential in high-performance battery technologies and electrochemical applications. Its structural flexibility and electronic properties make it a subject of interest for researchers seeking to optimize sodium-ion mobility and stability in next-generation electrode materials.
Key Properties
Cross-validated computational properties for NaMn3O4, 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 NaMn3O4, 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 | 0.05 | 0.0456 | -8.061 | 4.90 |
| C2/m (No. 12) | — | — | — | — | — |
| C2/m (No. 12) | Monoclinic | — | — | — | 4.94 |
| C2/m (No. 12) | — | — | — | — | — |
| C2/m (No. 12) | Monoclinic | — | — | — | 4.64 |
| C2/m (No. 12) | Monoclinic | — | — | — | 4.82 |
Applications
Where NaMn3O4 is used.
Frequently Asked Questions
Common questions about NaMn3O4, answered from cross-validated data.
What is NaMn3O4?
NaMn3O4 is a metastable, semimetallic layered oxide containing sodium and manganese that is researched for its potential in electrochemical energy storage devices.
What is NaMn3O4 used for?
What is the band gap of NaMn3O4?
Is NaMn3O4 a metal, semiconductor, or insulator?
Is NaMn3O4 thermodynamically stable?
What is the crystal structure of NaMn3O4?
What is the density of NaMn3O4?
How many polymorphs of NaMn3O4 are known?
What elements does NaMn3O4 contain?
Where does the data for NaMn3O4 come from?
How It Compares
Within the layered sodium transition-metal oxides class.
Within the broader class of layered sodium transition-metal oxides, NaMn3O4 occupies a distinct niche compared to more common members like NaMnO2 or NaCoO2. While many of its siblings are widely utilized as stable cathode materials, NaMn3O4 is noted for its metastable nature and semimetallic character, offering a different structural perspective on how transition metals influence the electrochemical performance of sodium-based oxides.
Related Compounds
Other Layered Sodium Transition-Metal Oxides 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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