Lithium platinate

Lithium platinate, Li₂PtO₃, is a chemical compound of lithium, platinum and oxygen. It is a semiconductor with a layered honeycomb crystal structure and a band gap of 2.3 eV, and can be prepared by direct calcination of Pt metal and lithium carbonate at ca. 600 °C.[3] Lithium platinate is a potential lithium-ion battery electrode material,[2][4] though this application is hindered by the high costs of Pt, as compared to the cheaper Li₂MnO₃ alternative.[5]

Lithium platinate

Crystal structure with Pt shown in yellow, Li in purple and O in red
Scale bar 1 mm[1]
Names
Preferred IUPAC name Lithium platinate
Identifiers
CAS Number	37363-24-9
3D model (JSmol)	Interactive image
SMILES [Li+].O=[Pt]([O-])[O-].[Li+]
Properties
Chemical formula	Li2PtO3
Appearance	Yellow crystals
Band gap	2.3 eV[2]
Structure
Crystal structure	Monoclinic, C2/m[2]
Lattice constant	a = 5.1836(2) Å, b = 8.9726(3) Å, c = 5.1113(1) Å α = 90°, β = 109.864(2)°, γ = 90°
Formula units (Z)	4
Related compounds
Other anions	Lithium iridate, lithium ruthenate
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references

References

1. Freund, F.; Williams, S. C.; Johnson, R. D.; Coldea, R.; Gegenwart, P.; Jesche, A. (2016). "Single crystal growth from separated educts and its application to lithium transition-metal oxides". Scientific Reports. 6. arXiv:1604.04551. Bibcode:2016NatSR...635362F. doi:10.1038/srep35362. PMC 5066249. PMID 27748402.
2. O'Malley, Matthew J.; Verweij, Henk; Woodward, Patrick M. (2008). "Structure and properties of ordered Li₂IrO₃ and Li₂PtO₃". Journal of Solid State Chemistry. 181 (8): 1803. Bibcode:2008JSSCh.181.1803O. doi:10.1016/j.jssc.2008.04.005.
3. Kasuya, Ryo; Miki, Takeshi; Morikawa, Hisashi; Tai, Yutaka (2013). "Synthesis of alkali metal platinates and their dissolution behavior in hydrochloric acid". Journal of the Ceramic Society of Japan. 121 (1418): 884. doi:10.2109/jcersj2.121.884.
4. Okada, Shigeto; Yamaki, Jun-Ichi; Asakura, Kaoru; Ohtsuka, Hideaki; Arai, Hajime; Tobishima, Shin-Ichi; Sakurai, Yoji (1999). "Cathode characteristics of layered rocksalt oxide, Li₂PtO₃". Electrochimica Acta. 45: 329. doi:10.1016/S0013-4686(99)00214-5.
5. Yoshio, Masaki; Brodd, Ralph J.; Kozawa, Akiya (17 July 2010). Lithium-Ion Batteries: Science and Technologies. Springer Science & Business Media. p. 10. ISBN 978-0-387-34445-4.