Li2VCoO5
Li2VCoO5 is a metastable, semiconducting layered oxide containing lithium, vanadium, and cobalt, primarily studied for its potential in electrochemical energy storage.
About Li2VCoO5
Li2VCoO5 belongs to the class of layered lithium transition-metal oxides, characterized by its semiconducting electronic structure. As a metastable phase, it represents a complex arrangement of lithium, vanadium, cobalt, and oxygen atoms that offers unique structural pathways for ion mobility.
Its significance lies in the ongoing exploration of multi-metal oxide systems for electrochemical applications. By incorporating both vanadium and cobalt into the layered framework, this material serves as a platform for investigating how transition-metal synergy influences the stability and performance of lithium-ion battery cathodes.
Key Properties
Cross-validated computational properties for Li2VCoO5, 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 Li2VCoO5, 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. |
|---|---|---|---|---|---|
| P4/nmm (No. 129) | tetragonal | 0.64 | 0.0929 | -7.022 | 3.36 |
| P4/nmm (No. 129) | — | — | — | — | — |
| P4/nmm (No. 129) | Tetragonal | — | — | — | 3.36 |
| P4/nmm (No. 129) | Tetragonal | — | — | — | 3.59 |
| P4/nmm (No. 129) | Tetragonal | — | — | — | 3.46 |
| P4/nmm (No. 129) | — | — | — | — | — |
Applications
Where Li2VCoO5 is used.
Frequently Asked Questions
Common questions about Li2VCoO5, answered from cross-validated data.
What is Li2VCoO5?
Li2VCoO5 is a metastable, semiconducting layered oxide containing lithium, vanadium, and cobalt, primarily studied for its potential in electrochemical energy storage.
What is Li2VCoO5 used for?
What is the band gap of Li2VCoO5?
Is Li2VCoO5 a metal, semiconductor, or insulator?
Is Li2VCoO5 thermodynamically stable?
What is the crystal structure of Li2VCoO5?
What is the density of Li2VCoO5?
How many polymorphs of Li2VCoO5 are known?
What elements does Li2VCoO5 contain?
Where does the data for Li2VCoO5 come from?
How It Compares
Within the layered lithium transition-metal oxides class.
Within the broad family of layered lithium transition-metal oxides, Li2VCoO5 occupies a more specialized niche compared to widely utilized industry standards like LiCoO2 or LiMn2O4. While those materials are established, stable benchmarks for commercial batteries, Li2VCoO5 is a metastable variant that highlights the structural diversity possible when tuning the transition-metal composition beyond simple binary systems.
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).
- jarvis — Data from JARVIS (NIST). Cite: Choudhary et al., npj Comp. Mater. 6, 173 (2020).
- mpaloe — Data from mpaloe.
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