LiO2
Lithium superoxide · Lithium dioxide
Lithium superoxide is an inorganic compound that acts as a reactive intermediate in the chemistry of lithium-oxygen batteries. It is primarily studied for its role in the electrochemical processes that allow for high-capacity energy storage.
Key Properties
Cross-validated computational properties for Lithium superoxide, 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 LiO2, 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. |
|---|---|---|---|---|---|
| Pnnm (No. 58) | orthorhombic | 0.00 | 0.0831 | -4.978 | 2.24 |
| C2/m (No. 12) | monoclinic | 0.00 | 0.3169 | -4.744 | 2.35 |
| R-3m (No. 166) | trigonal | 0.07 | 0.5915 | -4.469 | 2.24 |
| Fm-3m (No. 225) | cubic | 0.00 | 0.6860 | -4.375 | 2.60 |
| Cm (No. 8) | Monoclinic | — | — | — | 1.66 |
| R-3m (No. 166) | — | — | — | — | — |
| Pnnm (No. 58) | — | — | — | — | — |
| Cm (No. 8) | Monoclinic | — | — | — | 2.02 |
| Cm (No. 8) | Monoclinic | — | — | — | 2.18 |
| Cm (No. 8) | Monoclinic | — | — | — | 2.34 |
| C2 (No. 5) | Monoclinic | — | — | — | 2.68 |
| C2 (No. 5) | Monoclinic | — | — | — | 2.09 |
Applications
Where Lithium superoxide is used.
Frequently Asked Questions
Common questions about Lithium superoxide, answered from cross-validated data.
What is LiO2?
Lithium superoxide is an inorganic compound that acts as a reactive intermediate in the chemistry of lithium-oxygen batteries. It is primarily studied for its role in the electrochemical processes that allow for high-capacity energy storage.
What is LiO2 used for?
What is the band gap of LiO2?
Is LiO2 a metal, semiconductor, or insulator?
Is LiO2 thermodynamically stable?
What is the crystal structure of LiO2?
What is the density of LiO2?
How many polymorphs of LiO2 are known?
What elements does LiO2 contain?
Where does the data for LiO2 come from?
Related Compounds
Other Lithium 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.
- jarvis — Data from JARVIS (NIST). Cite: Choudhary et al., npj Comp. Mater. 6, 173 (2020).
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