Li2WO4
lithium tungstate
Lithium tungstate is a stable, insulating inorganic oxide that serves as a key material in specialized ceramic and ionic-conducting research.
About lithium tungstate
Lithium tungstate is a thermodynamically stable member of the lithium oxide family, characterized by its insulating electronic nature. As a robust inorganic compound, it maintains structural integrity under standard conditions and is frequently studied for its potential in solid-state ionics.
This material is valued for its role in advanced chemical synthesis and as a precursor in the development of specialized glass and ceramic systems. Its stability on the convex hull makes it a reliable subject for researchers investigating lithium-based dielectric and ionic conductors.
Key Properties
Cross-validated computational properties for lithium tungstate, 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.
Cross-Source DFT Agreement
How well independent DFT databases agree on the thermodynamics of Li2WO4. Tight agreement means computed properties can be trusted without re-running calculations.
Agreement ScoreA normalized confidence score summarizing how closely independent DFT databases agree. Higher scores mean tighter cross-source agreement.
Hull SpreadDifference between the highest and lowest energy-above-hull values reported by comparable sources. Smaller spread means less thermodynamic disagreement.
Sources ComparedNumber and names of computational sources with comparable entries for this formula.
Space Group ConsensusWhether independent sources predict the same crystal symmetry for the lowest-energy structure.
Reported Structures
Lowest-energy structures reported for Li2WO4, 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. |
|---|---|---|---|---|---|
| — | — | 5.21 | 0.0000 | -2.506 | — |
| C2/c (No. 15) | monoclinic | 3.97 | 0.0000 | -7.576 | 6.03 |
| R-3 (No. 148) | trigonal | 1.77 | 0.0000 | -2.442 | — |
| I41/amd (No. 141) | tetragonal | 4.33 | 0.0051 | -7.571 | 5.89 |
| R-3 (No. 148) | trigonal | 4.88 | 0.0159 | -7.560 | 4.30 |
| — | — | 4.17 | 0.0325 | -2.473 | — |
| — | — | 4.79 | 0.0390 | -2.467 | — |
| — | — | 3.94 | 0.0394 | -2.466 | — |
| — | — | 3.81 | 0.0417 | -2.464 | — |
| C2/c (No. 15) | monoclinic | 0.81 | 0.0687 | -2.373 | — |
| C2/c (No. 15) | monoclinic | 0.80 | 0.0689 | -2.373 | — |
| — | — | 4.66 | 0.1085 | -2.397 | — |
Synthesis Routes
Literature-extracted synthesis procedures targeting Li2WO4.
Applications
Where lithium tungstate is used.
Frequently Asked Questions
Common questions about lithium tungstate, answered from cross-validated data.
What is Li2WO4?
Lithium tungstate is a stable, insulating inorganic oxide that serves as a key material in specialized ceramic and ionic-conducting research.
What is Li2WO4 used for?
What is the band gap of Li2WO4?
Is Li2WO4 a metal, semiconductor, or insulator?
Is Li2WO4 thermodynamically stable?
What is the crystal structure of Li2WO4?
What is the density of Li2WO4?
How many polymorphs of Li2WO4 are known?
How is Li2WO4 synthesized?
What elements does Li2WO4 contain?
Where does the data for Li2WO4 come from?
How It Compares
Within the lithium oxides class.
Unlike the transition-metal-rich cathode materials such as LiCoO2, LiNiO2, and LiMn2O4, which are prized for their redox-active properties in batteries, Li2WO4 functions primarily as a stable, wide-gap insulating dielectric. While it shares the lithium-oxide backbone with Li2O or Li4SiO4, its specific tungsten-oxygen framework provides distinct structural characteristics that differentiate it from the more common layered or spinel-structured lithium metal oxides.
Related Compounds
Other Lithium Oxides in the database.
Data sources & attribution
- oqmd — Data from the OQMD (oqmd.org). Cite: Saal et al., JOM 65, 1501 (2013); Kirklin et al., npj Comp. Mater. 1, 15010 (2015). (CC-BY-4.0)
- materials_project — Data from the Materials Project (materialsproject.org). Cite: Jain et al., APL Materials 1, 011002 (2013). (CC-BY-4.0)
- jarvis — Data from JARVIS (jarvis.nist.gov), NIST. Cite: Choudhary et al., npj Comp. Mater. 6, 173 (2020). (LicenseRef-US-Gov-PD)
- mpaloe — Data from MP-ALOE. Cite: Kuner et al., npj Comput. Mater. (2025), doi:10.1038/s41524-025-01834-9.
- cod — Data from the Crystallography Open Database (crystallography.net/cod/). Cite: Grazulis et al., J. Appl. Cryst. 42, 726 (2009). (CC0-1.0)
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