Li2AlCoO4
Li2AlCoO4 is a semiconducting, metastable layered lithium transition-metal oxide used in advanced materials research for potential battery applications.
About Li2AlCoO4
Li2AlCoO4 is a complex oxide belonging to the class of layered lithium transition-metal materials. As a semiconducting compound, it exhibits unique electronic behavior that makes it a subject of interest for researchers investigating the next generation of energy storage materials. Its status as a metastable phase suggests a delicate structural balance that is highly sensitive to synthesis conditions. The material is characterized by a significant degree of structural diversity, as evidenced by the numerous reported configurations across various databases. This complexity highlights its potential utility in exploring ion transport pathways and electrochemical performance within solid-state systems.
Key Properties
Cross-validated computational properties for Li2AlCoO4, 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 Li2AlCoO4, 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 | 0.74 | 0.0341 | -6.698 | 3.92 |
| P1 (No. 1) | triclinic | 0.03 | 0.0539 | -6.678 | 3.98 |
| P-1 (No. 2) | triclinic | 0.00 | 0.0678 | -6.665 | 3.99 |
| Pc (No. 7) | monoclinic | 1.72 | 0.0795 | -6.653 | 3.13 |
| C2221 (No. 20) | orthorhombic | 1.66 | 0.0832 | -6.649 | 3.02 |
| Pna21 (No. 33) | orthorhombic | 1.64 | 0.0838 | -6.649 | 3.16 |
| Pmn21 (No. 31) | orthorhombic | 1.79 | 0.0839 | -6.648 | 3.17 |
| Pnma (No. 62) | orthorhombic | 1.78 | 0.0846 | -6.648 | 3.16 |
| P21/c (No. 14) | monoclinic | 1.58 | 0.0895 | -6.643 | 3.08 |
| P21/c (No. 14) | monoclinic | 1.70 | 0.0904 | -6.642 | 3.08 |
| Pnma (No. 62) | orthorhombic | 1.71 | 0.0934 | -6.639 | 3.07 |
| P21/c (No. 14) | monoclinic | 0.85 | 0.1339 | -6.599 | 3.38 |
Applications
Where Li2AlCoO4 is used.
Frequently Asked Questions
Common questions about Li2AlCoO4, answered from cross-validated data.
What is Li2AlCoO4?
Li2AlCoO4 is a semiconducting, metastable layered lithium transition-metal oxide used in advanced materials research for potential battery applications.
What is Li2AlCoO4 used for?
What is the band gap of Li2AlCoO4?
Is Li2AlCoO4 a metal, semiconductor, or insulator?
Is Li2AlCoO4 thermodynamically stable?
What is the crystal structure of Li2AlCoO4?
What is the density of Li2AlCoO4?
How many polymorphs of Li2AlCoO4 are known?
What elements does Li2AlCoO4 contain?
Where does the data for Li2AlCoO4 come from?
How It Compares
Within the layered lithium transition-metal oxides class.
Within the broader family of layered lithium transition-metal oxides, Li2AlCoO4 occupies a distinct position compared to more established materials like LiCoO2. While LiCoO2 is a foundational cathode material known for high stability, Li2AlCoO4 represents a more exotic, metastable variant that incorporates aluminum into the lattice to potentially tune electrochemical properties and structural integrity.
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.
Analyze Li2AlCoO4 in the Lattice Graph platform
Polymorph comparison, confidence scoring, supply-chain risk, and patent monitoring — across 53 integrated data sources.
Explore the Platform →