Abstract

In the present study, SnS and Cr-doped SnS nanoparticles were synthesized by solvothermal method. The structural, functional, elemental, morphological, and electrochemical properties of the as-synthesized non-doped and Cr-doped SnS nanoparticles were examined using XRD, Raman, FTIR, SEM/EDX, and cyclic voltammetry analysis. The XRD results indicated a good crystallinity of the sample and confirmed the formation of the SnS nanoparticles in orthorhombic structure. The FTIR result also confirmed the functional groups present in the Cr-doped SnS nanoparticles. The well-formed SnS nanoparticles are observed as spherical shapes confirmed from the SEM analysis. EDX spectra confirmed the presence of Sn, Cr, and S elements in the Cr-doped SnS nanoparticles. The electrochemical performance of Cr-doped SnS nanoparticles shows higher specific capacitance of 375 F/g compared with 284 F/g of bare SnS nanoparticles, which confirms that Cr-doped SnS nanoparticles are promising candidate for supercapacitor applications.

中文翻译：

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比较通过溶剂热法合成的裸 SnS 和 Cr 掺杂 SnS 纳米粒子的电化学性能

摘要

在本研究中，采用溶剂热法合成了 SnS 和 Cr 掺杂的 SnS 纳米颗粒。使用 XRD、Raman、FTIR、SEM/EDX 和循环伏安法分析对合成的未掺杂和 Cr 掺杂 SnS 纳米粒子的结构、功能、元素、形态和电化学性质进行了检查。XRD结果表明样品具有良好的结晶度，并证实形成了斜方晶系结构的SnS纳米颗粒。FTIR 结果也证实了 Cr 掺杂的 SnS 纳米颗粒中存在的官能团。形状良好的 SnS 纳米颗粒被观察为由 SEM 分析证实的球形。EDX 光谱证实了在 Cr 掺杂的 SnS 纳米颗粒中存在 Sn、Cr ​​和 S 元素。