K2LiMn2O4
K2LiMn2O4 is a complex, semiconducting layered oxide containing potassium, lithium, and manganese, primarily studied for its utility in electrochemical energy storage.
About K2LiMn2O4
K2LiMn2O4 belongs to the class of layered lithium transition-metal oxides, characterized by a semiconducting electronic structure. As a metastable phase, it represents a complex arrangement of potassium, lithium, and manganese within an oxygen framework, offering unique pathways for ion mobility in solid-state systems. Its structural diversity is highlighted by multiple reported configurations across various databases, making it a subject of interest for fundamental materials research. This compound is primarily investigated for its potential role in advanced electrochemical energy storage applications, where structural stability and ion transport are critical. By leveraging its layered architecture, researchers aim to optimize performance in next-generation battery technologies that require efficient lithium-ion intercalation.
Key Properties
Cross-validated computational properties for K2LiMn2O4, aggregated across 4 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 K2LiMn2O4, 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. |
|---|---|---|---|---|---|
| P-1 (No. 2) | triclinic | 1.11 | 0.0918 | -6.500 | 3.12 |
| C2/c (No. 15) | monoclinic | 0.00 | 0.0928 | -6.499 | 3.11 |
| C2 (No. 5) | monoclinic | 0.69 | 0.0943 | -6.498 | 3.11 |
| Pm (No. 6) | monoclinic | 0.00 | 0.1243 | -6.468 | 3.17 |
| C2/c (No. 15) | Monoclinic | — | — | — | 3.11 |
| C2/c (No. 15) | Monoclinic | — | — | — | 3.31 |
| C2/c (No. 15) | Monoclinic | — | — | — | 3.26 |
| — | — | — | — | — | 3.16 |
| C2/c (No. 15) | — | — | — | — | — |
Applications
Where K2LiMn2O4 is used.
Frequently Asked Questions
Common questions about K2LiMn2O4, answered from cross-validated data.
What is K2LiMn2O4?
K2LiMn2O4 is a complex, semiconducting layered oxide containing potassium, lithium, and manganese, primarily studied for its utility in electrochemical energy storage.
What is K2LiMn2O4 used for?
What is the band gap of K2LiMn2O4?
Is K2LiMn2O4 a metal, semiconductor, or insulator?
Is K2LiMn2O4 thermodynamically stable?
What is the crystal structure of K2LiMn2O4?
What is the density of K2LiMn2O4?
How many polymorphs of K2LiMn2O4 are known?
What elements does K2LiMn2O4 contain?
Where does the data for K2LiMn2O4 come from?
How It Compares
Within the layered lithium transition-metal oxides class.
Within the diverse family of layered lithium transition-metal oxides, K2LiMn2O4 occupies a distinct position compared to more conventional materials like LiCoO2 or LiMn2O4. While many of its siblings are widely utilized as standard cathode materials, K2LiMn2O4 is distinguished by its metastable nature and the inclusion of potassium, which differentiates its structural evolution and electrochemical behavior from the more thermodynamically stable members of the class.
Related Compounds
Other Layered Lithium 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).
- mpaloe — Data from mpaloe.
- omat24 — Data from OMat24 (Meta FAIR). Cite: Barroso-Luque et al., arXiv 2410.12771 (2024).
- jarvis — Data from JARVIS (NIST). Cite: Choudhary et al., npj Comp. Mater. 6, 173 (2020).
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