Cubic rocksalt Li2SnS3 and a solid solution with Li3NbS4 prepared by mechanochemical synthesis

Atsushi Sakuda, Kentaro Kuratani, Tomonari Takeuchi, Hisao Kiuchi, Tomoya Kawaguchi, Masahiro Shikano, Hikari Sakaebe, Hironori Kobayashi

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Cubic Li2SnS3 with NaCl structure and the solid solution with Li3NbS4 were developed by mechanochemical synthesis. Cubic Li2SnS3 is a metastable phase, and the previously reported monoclinic Li2SnS3 is a stable phase. Cubic Li2SnS3 acts as an ionic conductor, and the solid solution of Li3NbS4-Li2SnS3 can be used as an electrode active material in lithium secondary batteries. Li2.933Nb0.8Sn0.267S4 and Li2.857Nb0.571Sn0.571S4 shows large reversible capacities of 318 and 286mAhg-1, respectively. The capacity of these materials depends less on the niobium content than on the electrical conductivity. The reversible capacity in the 2-V region is mainly attributable to redox reactions involving rather sulfur than tin.

Original languageEnglish
Pages (from-to)580-584
Number of pages5
JournalElectrochemistry
Volume85
Issue number9
DOIs
Publication statusPublished - 2017 Jan 1
Externally publishedYes

Keywords

  • Electrode
  • Mechanochemical synthesis
  • Sulfide
  • Tin

ASJC Scopus subject areas

  • Electrochemistry

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  • Cite this

    Sakuda, A., Kuratani, K., Takeuchi, T., Kiuchi, H., Kawaguchi, T., Shikano, M., Sakaebe, H., & Kobayashi, H. (2017). Cubic rocksalt Li2SnS3 and a solid solution with Li3NbS4 prepared by mechanochemical synthesis. Electrochemistry, 85(9), 580-584. https://doi.org/10.5796/electrochemistry.85.580