Development of Li2TiS3–Li3NbS4 by a mechanochemical process

Atsushi SAKUDA; Tomonari TAKEUCHI; Masahiro SHIKANO; Koji OHARA; Katsutoshi FUKUDA; Yoshiharu UCHIMOTO; Zempachi OGUMI; Hironori KOBAYASHI; Hikari SAKAEBE

doi:10.2109/jcersj2.16272

Feature: Functional Ceramics for Energy Conversion and Storage Devices: Full papers

Development of Li₂TiS₃–Li₃NbS₄ by a mechanochemical process

Atsushi SAKUDA, Tomonari TAKEUCHI, Masahiro SHIKANO, Koji OHARA, Katsutoshi FUKUDA, Yoshiharu UCHIMOTO, Zempachi OGUMI, Hironori KOBAYASHI, Hikari SAKAEBE

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Keywords: Sulfide, Battery, Electrode, Mechanochemical synthesis

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Supplementary material

2017 Volume 125 Issue 4 Pages 268-271

DOI https://doi.org/10.2109/jcersj2.16272

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Abstract

Solid solution of Li₂TiS₃ (Li_8/3Ti_4/3S₄) and Li₃NbS₄ were prepared using mechanochemical syntheses. The materials with cubic rock-salt structure were obtained over the full range of compositions (Li₍₈₊_x_)/3Ti₍₄₋₄_x_)/3Nb_xS₄; 0 ≦ x ≦ 1). Lithium, titanium, and niobium randomly share the cationic site. Each material showed electrode activity and had a large reversible capacity of more than 350 mAh g⁻¹ with more than 3 electron process per composition formulas of Li₍₈₊_x_)/3Ti₍₄₋₄_x_)/3Nb_xS₄.

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