Solution Synthesis of Sb 2 S 3 and Na 3 SbS 4 Solid-State Electrolyte
Solution Synthesis of Sb 2 S 3 and Na 3 SbS 4 Solid-State Electrolyte
复制标题
Sb 2 S 3 和Na 3 SbS 4 固态电解质的溶液合成
DOI：
10.1149/1945-7111/ac3752
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发表时间：
2021
影响因子：
3.9
通讯作者：
Wolden, Colin A.
中科院分区：
文献类型：
--
作者：
Vaselabadi, Saeed Ahmadi;Smith, William H.;Wolden, Colin A.
硫代锑酸钠(Na3SbS4)具有较高的离子导电性和在质子性溶剂中的稳定性，是一种极具吸引力的钠离子电池固体电解质。在这里，我们描述了基于溶液的合成路线。首先，我们证明了通过Na2 S和SbCl3的热力学有利的歧化反应合成了Sb2 S 3前驱体。将这种基于溶液的方法进一步扩展到将得到的Sb 2 S 3与Na2 S偶联来合成Na3SbS4。结果表明，对于Na3SbS4的溶液合成，乙醇是一种比水更好的溶剂。经低温复分解合成的非晶态Sb2 S 3合成了高结晶度的Na3SbS4，其室温Na+电导率为0.52ms cm−1，活化能较低，与文献报道的领先值相当。
Sodium thioantimonate (Na 3 SbS 4) is an attractive solid-state electrolyte for sodium-ion batteries due to its high ionic conductivity and stability in protic solvents. Herein, we describe solution-based routes for its synthesis. First, we demonstrate the synthesis of the Sb 2 S 3 precursor via thermodynamically favorable metathesis between Na 2 S and SbCl 3. This solution-based approach is further extended to couple the resulting Sb 2 S 3 with Na 2 S for the synthesis of Na 3 SbS 4. It is shown that ethanol is a superior solvent to water for solution-based synthesis of Na 3 SbS 4 with respect to yield, morphology, and performance. Amorphous Sb 2 S 3 synthesized from low-temperature metathesis produced highly crystalline Na 3 SbS 4 with a room temperature Na+ conductivity of 0.52 mS cm− 1 and low activation energy, comparable to leading values reported in the literature.