Mechanochemical synthesis of rock salt-type Na2CaSnS4 as a sodium-ion conductor†

RSC Mechanochemistry Pub Date : 2024-12-03 DOI:10.1039/D4MR00028E

Hamdi Ben Yahia, Atsushi Sakuda and Akitoshi Hayashi

{"title":"Mechanochemical synthesis of rock salt-type Na2CaSnS4 as a sodium-ion conductor†","authors":"Hamdi Ben Yahia, Atsushi Sakuda and Akitoshi Hayashi","doi":"10.1039/D4MR00028E","DOIUrl":null,"url":null,"abstract":"Na2CaSnS4 was prepared by mechanochemical synthesis from a mixture of Na2S, CaS, and SnS2. The crystal structure was determined from X-ray powder diffraction data. The chemical composition was confirmed by energy dispersive X-ray spectroscopy, and the ionic conductivity was measured using electrochemical impedance spectroscopy. Na2CaSnS4 crystallizes with a rock salt-type structure, space group Fm<img>m, a = 5.6842 (3) Å, V = 183.66 (2) Å3, and Z = 1. All the cations are statistically disordered over a unique crystallographic site and are octahedrally coordinated to the sulfur atoms. The ionic conductivity of Na2CaSnS4 is 4.2 × 10−8 S cm−1 (Ea = 0.6 eV) at 33 °C.","PeriodicalId":101140,"journal":{"name":"RSC Mechanochemistry","volume":" 1","pages":" 159-164"},"PeriodicalIF":0.0000,"publicationDate":"2024-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/mr/d4mr00028e?page=search","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"RSC Mechanochemistry","FirstCategoryId":"1085","ListUrlMain":"https://pubs.rsc.org/en/content/articlelanding/2025/mr/d4mr00028e","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}

引用次数: 0

Abstract

Na₂CaSnS₄ was prepared by mechanochemical synthesis from a mixture of Na₂S, CaS, and SnS₂. The crystal structure was determined from X-ray powder diffraction data. The chemical composition was confirmed by energy dispersive X-ray spectroscopy, and the ionic conductivity was measured using electrochemical impedance spectroscopy. Na₂CaSnS₄ crystallizes with a rock salt-type structure, space group Fmm, a = 5.6842 (3) Å, V = 183.66 (2) Å³, and Z = 1. All the cations are statistically disordered over a unique crystallographic site and are octahedrally coordinated to the sulfur atoms. The ionic conductivity of Na₂CaSnS₄ is 4.2 × 10⁻⁸ S cm⁻¹ (E_a = 0.6 eV) at 33 °C.

Abstract Image

查看原文

微信好友朋友圈 QQ好友复制链接

本刊更多论文

岩盐型钠离子导体Na2CaSnS4的机械化学合成

以Na2S、CaS和SnS2为原料，采用机械化学法合成了Na2CaSnS4。晶体结构由x射线粉末衍射数据确定。用能量色散x射线谱法确定了其化学成分，并用电化学阻抗谱法测定了离子电导率。Na2CaSnS4结晶为岩盐型结构，空间群Fmm， a = 5.6842 (3) Å， V = 183.66 (2) Å3, Z = 1。在统计上，所有的阳离子在一个独特的晶体位置上是无序的，并且与硫原子呈八面体配位。在33℃时，Na2CaSnS4的离子电导率为4.2 × 10−8 S cm−1 （Ea = 0.6 eV）。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文去求助

来源期刊

RSC Mechanochemistry

自引率

0.00%

发文量