Selective and Facile Synthesis of Sodium Sulfide and Sodium Disulfide Polymorphs

Hany El-Shinawi; Edmund J Cussen; Serena A Corr

doi:10.1021/acs.inorgchem.8b00776

Selective and Facile Synthesis of Sodium Sulfide and Sodium Disulfide Polymorphs

Inorg Chem. 2018 Jul 2;57(13):7499-7502. doi: 10.1021/acs.inorgchem.8b00776. Epub 2018 Jun 18.

Authors

Hany El-Shinawi¹, Edmund J Cussen², Serena A Corr¹

Affiliations

¹ School of Chemistry, WestCHEM , University of Glasgow , Glasgow G12 8QQ , U.K.
² Department of Pure and Applied Chemistry, WestCHEM , The University of Strathclyde , Glasgow G1 1XL , U.K.

PMID: 29912553
DOI: 10.1021/acs.inorgchem.8b00776

Abstract

Na₂S and Na₂S₂ were selectively synthesized using a microwave-assisted thermal treatment of a Na⁺/S solution in tetraglyme between 100 and 200 °C, considerably lower than that of current routes. This novel synthetic pathway yields the Na₂S phase in high purity and allows for good selectivity between the polymorphs of Na₂S₂ (α and β phases). These materials show promising electrochemical properties and are particularly interesting for the continued development of Na-S batteries.