Sodium antimonide
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CAS Number
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3D model (JSmol)
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| ECHA InfoCard | 100.031.835 |
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CompTox Dashboard (EPA)
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InChI
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| Properties | |
Chemical formula
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Na3Sb |
| Molar mass | 190.729 g·mol−1 |
| Appearance | bluish-black crystals |
| Density | 2.6 g/cm3 |
| Melting point | 856 °C (1,573 °F; 1,129 K) |
Solubility in water
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reacts with water |
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Related compounds
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Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references
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Sodium antimonide is a binary inorganic compound with the molecular formula Na3Sb.[1][2]
Synthesis
The compound is often synthesized by fusing the elements together[3] at 900 °C in an inert atmosphere (e.g. argon), resulting in a crystalline phase that facilitates Li or Na-ion storage.
- 3Na + Sb → Na3Sb
Physical properties
The compound forms bluish-black cystals of the hexagonal crystal system, space group P63/mmc, cell parameters a = 0.532 nm, c = 0.947 nm, Z = 2.[4][5]
At high pressures (3 GPa), the transition to the cubic system occurs.
Chemical properties
Sodium antimonide reacts with water, producing stibine and sodium hydroxide:[6]
- Na3Sb + 3H2O → H3Sb + 3NaOH
Uses
The compound is known for its application as a high-capacity, rechargeable anode material in sodium-ion batteries.[7]
It is also used as a light-emitting component in photocathodes.[8][9]
References
- ^ RCA Review: A Technical Journal ... Radio Corporation of America. 1967. p. 96. Retrieved 25 January 2026.
- ^ Surface Modification of Metals by Ion Beams - 6: Proceedings of the Sixth International Conference on Surface Modification of Metals by Ion Beams, Riva Del Garda, Italy, September 12-16, 1988. Elsevier Science Publishers. 1989. p. 162. ISBN 978-1-85166-996-7. Retrieved 25 January 2026.
- ^ Morgan, Sir Gilbert Thomas (1918). Organic Compounds of Arsenic & Antimony. Longmans, Green, and Company. p. 308. Retrieved 25 January 2026.
- ^ "Na₃Sb mp-7956". Materials Project. Retrieved 25 January 2026.
- ^ Memoir. The Society. 1934. p. 442. Retrieved 25 January 2026.
- ^ Jacobson, Carl Alfred; Hampel, Clifford A. (1946). Encyclopedia of Chemical Reactions. Reinhold Publishing Corporation. p. 198. ISBN 978-0-598-84358-6. Retrieved 25 January 2026.
{{cite book}}: ISBN / Date incompatibility (help) - ^ He, Jun; Wei, Yaqing; Zhai, Tianyou; Li, Huiqiao (2018). "Antimony-based materials as promising anodes for rechargeable lithium-ion and sodium-ion batteries". Materials Chemistry Frontiers. 2 (3): 437–455. doi:10.1039/C7QM00480J.
- ^ Philips Technical Review. Philips Research Laboratory. 1982. p. 21. Retrieved 25 January 2026.
- ^ Ettema, A. R. H. F.; de Groot, R. A. (15 April 2000). "Electronic structure of Na3Sb and Na2KSb". Physical Review B. 61 (15): 10035–10039. doi:10.1103/PhysRevB.61.10035. ISSN 0163-1829. Retrieved 25 January 2026.