Amorphous Na2TiS3 as an Active Material for All-solid-state Sodium Batteries

被引：6

作者：

Nasu, Akira ^{[1
]}

Otoyama, Misae ^{[1
]}

Sakuda, Atsushi ^{[1
]}

Hayashi, Akitoshi ^{[1
]}

Tatsumisago, Masahiro ^{[1
]}

机构：

[1] Osaka Prefecture Univ, Grad Sch Engn, Dept Appl Chem, Naka Ku, 1-1 Gakuen Cho, Sakai, Osaka 5998531, Japan

来源：

CHEMISTRY LETTERS | 2019年 / 48卷 / 03期

基金：

日本学术振兴会;

关键词：

Electrode materials; Sodium batteries; All-solid-state batteries; ELECTRODE MATERIALS; ENERGY-STORAGE; LITHIUM; CRYSTAL;

D O I：

10.1246/cl.180895

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Amorphous transition metal polysulfides are promising high capacity electrode active materials for sodium secondary batteries. Here we report the superior electrode performance of amorphous Na2TiS3. Crystalline (c-) and amorphous (a-) Na2TiS3 were prepared by solid phase reaction with heat treatment and mechanochemical reaction, respectively. a-Na2TiS3 showed 10 fold higher ionic conductivity (1.5 x 10(-6) S cm(-1)) than that of c-Na2TiS3. The all-solid-state cells using c-Na2TiS3 and a-Na2TiS3 showed reversible capacities of 110 mAhg(-1) and 250 mAhg(-1), respectively. Amorphization of Na2TiS3 is a powerful way to improve electrode performance in all-solid-state sodium secondary batteries.

引用

页码：288 / 290

页数：3

共 18 条

[1] Electronic and Ionic Conductivities of LiNi1/3Mn1/3Co1/3O2-Li3PS4 Positive Composite Electrodes for All-Solid-State Lithium Batteries [J].