Li4Co3O7
Li4Co3O7 is a metastable, semiconducting layered oxide containing lithium, cobalt, and oxygen, primarily investigated for its potential in battery electrode applications.
About Li4Co3O7
Li4Co3O7 belongs to the class of layered lithium transition-metal oxides, a family of materials critical for modern electrochemical energy storage. As a semiconducting oxide, it represents a complex structural arrangement of lithium, cobalt, and oxygen atoms that offers unique pathways for ion mobility.
This compound is characterized as metastable, indicating that its synthesis and structural integrity are highly sensitive to processing conditions. Its existence within the broader landscape of lithium-based oxides highlights the ongoing effort to discover new phases that can optimize charge-discharge performance in next-generation battery technologies.
Key Properties
Cross-validated computational properties for Li4Co3O7, aggregated across 2 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 Li4Co3O7, 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 | 0.28 | 0.0536 | -6.253 | 4.28 |
| P-1 (No. 2) | triclinic | 0.78 | 0.0580 | -6.249 | 4.26 |
| C2/m (No. 12) | monoclinic | 0.00 | 0.0595 | -6.248 | 4.35 |
| P-1 (No. 2) | triclinic | 0.49 | 0.0642 | -6.243 | 4.23 |
| C2/m (No. 12) | monoclinic | 0.32 | 0.0650 | -6.242 | 4.18 |
| P1 (No. 1) | triclinic | 0.51 | 0.0659 | -6.241 | 4.27 |
| P-1 (No. 2) | triclinic | 0.77 | 0.0711 | -6.236 | 4.28 |
| P-1 (No. 2) | triclinic | 0.00 | 0.0770 | -6.230 | 4.27 |
| P-1 (No. 2) | triclinic | 0.00 | 0.0815 | -6.226 | 4.25 |
| C2/m (No. 12) | monoclinic | 0.29 | 0.0833 | -6.224 | 4.22 |
| C2/m (No. 12) | monoclinic | 0.75 | 0.0835 | -6.224 | 4.21 |
| C2/m (No. 12) | monoclinic | 0.00 | 0.0836 | -6.224 | 4.20 |
Applications
Where Li4Co3O7 is used.
Frequently Asked Questions
Common questions about Li4Co3O7, answered from cross-validated data.
What is Li4Co3O7?
Li4Co3O7 is a metastable, semiconducting layered oxide containing lithium, cobalt, and oxygen, primarily investigated for its potential in battery electrode applications.
What is Li4Co3O7 used for?
What is the band gap of Li4Co3O7?
Is Li4Co3O7 a metal, semiconductor, or insulator?
Is Li4Co3O7 thermodynamically stable?
What is the crystal structure of Li4Co3O7?
What is the density of Li4Co3O7?
How many polymorphs of Li4Co3O7 are known?
What elements does Li4Co3O7 contain?
Where does the data for Li4Co3O7 come from?
How It Compares
Within the layered lithium transition-metal oxides class.
Within the diverse family of layered lithium transition-metal oxides, Li4Co3O7 occupies a distinct position compared to more established, thermodynamically stable phases like LiCoO2. While LiCoO2 serves as the industry standard for cathode materials, Li4Co3O7 represents a more exotic, less common structural variation that challenges the typical stoichiometric conventions found in simpler members like LiAlO2 or LiMnO2.
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).
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