Na2MnO3
Na2MnO3 is a stable, semiconducting layered oxide material used primarily in the research and development of advanced sodium-ion battery technologies.
About Na2MnO3
Na2MnO3 belongs to the class of layered sodium transition-metal oxides, a group of materials highly valued for their structural versatility and electrochemical potential. As a thermodynamically stable phase residing on the convex hull, it exhibits robust structural integrity, making it a reliable candidate for fundamental studies in solid-state chemistry.
This semiconducting compound is primarily investigated for its role in energy storage technologies. Its layered framework facilitates the movement of sodium ions, which is essential for the development of high-performance battery electrodes where stability and electronic properties are critical for long-term cycling performance.
Key Properties
Cross-validated computational properties for Na2MnO3, 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 Na2MnO3, 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 | 1.92 | 0.0000 | -6.351 | 4.04 |
| Fddd (No. 70) | orthorhombic | 1.45 | 0.0122 | -6.339 | 4.09 |
| Fddd (No. 70) | — | — | — | — | — |
| C2/m (No. 12) | — | — | — | — | — |
| C2/m (No. 12) | Monoclinic | — | — | — | 3.78 |
| Fddd (No. 70) | — | — | — | — | — |
| Fddd (No. 70) | Orthorhombic | — | — | — | 4.15 |
| C2/m (No. 12) | — | — | — | — | — |
| Fddd (No. 70) | Orthorhombic | — | — | — | 3.81 |
| Fddd (No. 70) | Orthorhombic | — | — | — | 4.04 |
| C2/m (No. 12) | Monoclinic | — | — | — | 4.08 |
| C2/m (No. 12) | Monoclinic | — | — | — | 3.98 |
Applications
Where Na2MnO3 is used.
Frequently Asked Questions
Common questions about Na2MnO3, answered from cross-validated data.
What is Na2MnO3?
Na2MnO3 is a stable, semiconducting layered oxide material used primarily in the research and development of advanced sodium-ion battery technologies.
What is Na2MnO3 used for?
What is the band gap of Na2MnO3?
Is Na2MnO3 a metal, semiconductor, or insulator?
Is Na2MnO3 thermodynamically stable?
What is the crystal structure of Na2MnO3?
What is the density of Na2MnO3?
How many polymorphs of Na2MnO3 are known?
What elements does Na2MnO3 contain?
Where does the data for Na2MnO3 come from?
How It Compares
Within the layered sodium transition-metal oxides class.
Within the diverse family of layered sodium transition-metal oxides, Na2MnO3 occupies a distinct position alongside compounds like Na2TiO3 and Na2FeO3. While materials such as NaCoO2 or NaMnO2 are frequently utilized for their specific redox characteristics, Na2MnO3 is notable for its stability and specific stoichiometry, which distinguishes its electrochemical behavior from the more common monometallic sodium transition-metal 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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