Synthesis, structure, and ionic conductivity of Na5Li3Ti2S8

Fu Qiang Huang; Jiyong Yao; Zhanqiang Liu; Jianghua Yang; James A. Ibers

doi:10.1016/j.jssc.2008.01.023

Synthesis, structure, and ionic conductivity of Na₅Li₃Ti₂S₈

Fu Qiang Huang, Jiyong Yao, Zhanqiang Liu, Jianghua Yang, James A. Ibers^*

^*Corresponding author for this work

Chemistry

Research output: Contribution to journal › Article

2 Scopus citations

Abstract

The compound Na₅Li₃Ti₂S₈ has been synthesized by the reaction of Ti with a Na/Li/S flux at 723 K. Na₅Li₃Ti₂S₈ crystallizes in a new structure type with four formula units in space group C2/c of the monoclinic system. The structure contains three crystallographically independent Na⁺ cations and two crystallographically independent Li⁺ cations. Na₅Li₃Ti₂S₈ possesses a channel structure that features two-dimensional _∞² [LiTiS₄^{3 -}] layers built from Li(1)S₄ and TiS₄ tetrahedra. The layers, which are stacked along c, comprise eight-membered rings and sixteen-membered rings. Na(3)⁺ cations are located between the eight-membered rings and Na(1)⁺, Na(2)⁺, and Li(2)⁺ cations are located between the sixteen-membered rings. These cations are each octahedrally coordinated by six S^2- anions. The ionic conductivity σ_T of Na₅Li₃Ti₂S₈ ranges from 8.8×10^-6 S/cm at 303 K to 3.8×10^-4 S/cm at 483 K. The activation energy E_a is 0.40 eV.

Original language	English (US)
Pages (from-to)	837-841
Number of pages	5
Journal	Journal of Solid State Chemistry
Volume	181
Issue number	4
DOIs	https://doi.org/10.1016/j.jssc.2008.01.023
State	Published - Apr 1 2008

Keywords

Channel structure
Ionic conductivity
Sodium lithium titanium sulfide
Synthesis
X-ray structure

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Ceramics and Composites
Condensed Matter Physics
Physical and Theoretical Chemistry
Inorganic Chemistry
Materials Chemistry

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Huang, F. Q., Yao, J., Liu, Z., Yang, J., & Ibers, J. A. (2008). Synthesis, structure, and ionic conductivity of Na₅Li₃Ti₂S₈. Journal of Solid State Chemistry, 181(4), 837-841. https://doi.org/10.1016/j.jssc.2008.01.023

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abstract = "The compound Na5Li3Ti2S8 has been synthesized by the reaction of Ti with a Na/Li/S flux at 723 K. Na5Li3Ti2S8 crystallizes in a new structure type with four formula units in space group C2/c of the monoclinic system. The structure contains three crystallographically independent Na+ cations and two crystallographically independent Li+ cations. Na5Li3Ti2S8 possesses a channel structure that features two-dimensional ∞2 [LiTiS43 -] layers built from Li(1)S4 and TiS4 tetrahedra. The layers, which are stacked along c, comprise eight-membered rings and sixteen-membered rings. Na(3)+ cations are located between the eight-membered rings and Na(1)+, Na(2)+, and Li(2)+ cations are located between the sixteen-membered rings. These cations are each octahedrally coordinated by six S2- anions. The ionic conductivity σT of Na5Li3Ti2S8 ranges from 8.8×10-6 S/cm at 303 K to 3.8×10-4 S/cm at 483 K. The activation energy Ea is 0.40 eV.",

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AU - Huang, Fu Qiang

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AU - Liu, Zhanqiang

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AU - Ibers, James A.

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N2 - The compound Na5Li3Ti2S8 has been synthesized by the reaction of Ti with a Na/Li/S flux at 723 K. Na5Li3Ti2S8 crystallizes in a new structure type with four formula units in space group C2/c of the monoclinic system. The structure contains three crystallographically independent Na+ cations and two crystallographically independent Li+ cations. Na5Li3Ti2S8 possesses a channel structure that features two-dimensional ∞2 [LiTiS43 -] layers built from Li(1)S4 and TiS4 tetrahedra. The layers, which are stacked along c, comprise eight-membered rings and sixteen-membered rings. Na(3)+ cations are located between the eight-membered rings and Na(1)+, Na(2)+, and Li(2)+ cations are located between the sixteen-membered rings. These cations are each octahedrally coordinated by six S2- anions. The ionic conductivity σT of Na5Li3Ti2S8 ranges from 8.8×10-6 S/cm at 303 K to 3.8×10-4 S/cm at 483 K. The activation energy Ea is 0.40 eV.

AB - The compound Na5Li3Ti2S8 has been synthesized by the reaction of Ti with a Na/Li/S flux at 723 K. Na5Li3Ti2S8 crystallizes in a new structure type with four formula units in space group C2/c of the monoclinic system. The structure contains three crystallographically independent Na+ cations and two crystallographically independent Li+ cations. Na5Li3Ti2S8 possesses a channel structure that features two-dimensional ∞2 [LiTiS43 -] layers built from Li(1)S4 and TiS4 tetrahedra. The layers, which are stacked along c, comprise eight-membered rings and sixteen-membered rings. Na(3)+ cations are located between the eight-membered rings and Na(1)+, Na(2)+, and Li(2)+ cations are located between the sixteen-membered rings. These cations are each octahedrally coordinated by six S2- anions. The ionic conductivity σT of Na5Li3Ti2S8 ranges from 8.8×10-6 S/cm at 303 K to 3.8×10-4 S/cm at 483 K. The activation energy Ea is 0.40 eV.

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KW - Sodium lithium titanium sulfide

KW - Synthesis

KW - X-ray structure

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