Multiphase Na3SbS4 with high ionic conductivity
Multiphase Na3SbS4 with high ionic conductivity
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DOI：
10.1016/j.mtener.2019.04.012
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发表时间：
2019-09-01
影响因子：
9.3
通讯作者：
Matsuda, Atsunori
中科院分区：
文献类型：
--
作者：
Gamo, Hirotada;Nguyen Huu Huy Phuc;Matsuda, Atsunori
使用含有丰富钠的无机固体电解质的全固态钠离子电池是大规模储能应用的有希望的候选者。全固态电池需要具有高离子电导率和电化学稳定性且通过简单合成路线生产的固体电解质材料。在这项工作中，我们报告了包含四方相和立方相结构的多相 Na3SbS4 的表征。我们发现通过液相反应法合成的Na3SbS4具有四方晶体结构，通过球磨后处理将其转变为立方相。多相Na3SbS4的离子电导率较高，室温下约为3.1 mS cm(-1)。 (C) 2019 Elsevier Ltd. 保留所有权利。
All-solid-state sodium-ion batteries using inorganic solid electrolytes containing abundant sodium are promising candidates for large-scale energy storage applications. Solid electrolyte materials that exhibit high ionic conductivity and electrochemical stability and are produced by simple synthesis routes are required for use in all-solid-state batteries. In this work, we report the characterization of multiphase Na3SbS4 that contains both tetragonal and cubic phase structures. We found that Na3SbS4 synthesized via a liquid-phase reaction method had a tetragonal crystal structure, which was converted to the cubic phase through post-treatment by ball milling. The ionic conductivity of the multiphase Na3SbS4 was high, about 3.1 mS cm(-1) at room temperature. (C) 2019 Elsevier Ltd. All rights reserved.