Si2Sn2
Si2Sn2 is a semiconducting silicon-tin compound studied for its potential application in high-capacity battery anode technologies.
About Si2Sn2
Si2Sn2 is a semiconducting binary compound composed of silicon and tin. As a member of the silicon anode material class, it is investigated for its potential to facilitate lithium-ion transport and storage in next-generation energy systems.
This material is characterized by its position above the thermodynamic hull, indicating it is likely metastable. Despite its structural complexity, it remains a subject of interest in materials informatics, with numerous reported structures across multiple databases highlighting its diverse potential configurations.
Key Properties
Cross-validated computational properties for Si2Sn2, aggregated across 4 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 Si2Sn2, 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. |
|---|---|---|---|---|---|
| F-43m (No. 216) | cubic | 0.43 | 0.1920 | -16.568 | 4.36 |
| C2/m (No. 12) | — | — | — | — | — |
| P4/nmm (No. 129) | — | — | — | — | — |
| P21/m (No. 11) | — | — | — | — | — |
| P4/nmm (No. 129) | — | — | — | — | — |
| R-3m (No. 166) | — | — | — | — | — |
| Imma (No. 74) | — | — | — | — | — |
| Pmma (No. 51) | — | — | — | — | — |
| P4/nmm (No. 129) | — | — | — | — | — |
| P4/nmm (No. 129) | — | — | — | — | — |
| P4/nmm (No. 129) | — | — | — | — | — |
| Imma (No. 74) | — | — | — | — | — |
Applications
Where Si2Sn2 is used.
Frequently Asked Questions
Common questions about Si2Sn2, answered from cross-validated data.
What is Si2Sn2?
Si2Sn2 is a semiconducting silicon-tin compound studied for its potential application in high-capacity battery anode technologies.
What is Si2Sn2 used for?
What is the band gap of Si2Sn2?
Is Si2Sn2 a metal, semiconductor, or insulator?
Is Si2Sn2 thermodynamically stable?
What is the crystal structure of Si2Sn2?
What is the density of Si2Sn2?
How many polymorphs of Si2Sn2 are known?
What elements does Si2Sn2 contain?
Where does the data for Si2Sn2 come from?
How It Compares
Within the silicon anode materials class.
Unlike the highly stable and widely utilized Si or the robust intermetallic Mg2Si, Si2Sn2 exists in a more precarious thermodynamic state. While materials like MoSi2 and BaSi2 are well-established for their structural integrity and specific electronic properties, Si2Sn2 represents a more experimental frontier within the silicon anode class, requiring careful synthesis to manage its inherent instability.
Related Compounds
Other Silicon Anode Materials in the database.
Data sources & attribution
- materials_project — Data from the Materials Project. Cite: Jain et al., APL Materials 1, 011002 (2013).
- aflow — Data from AFLOW. Cite: Curtarolo et al., Comp. Mater. Sci. 58, 218 (2012).
- nomad — Data from NOMAD. Cite: Draxl & Scheffler, J. Phys. Mater. 2, 036001 (2019).
Analyze Si2Sn2 in the Lattice Graph platform
Polymorph comparison, confidence scoring, supply-chain risk, and patent monitoring — across 53 integrated data sources.
Explore the Platform →