Scholarlink

<p>Tungsten disulfide (WS<sub>2</sub>) is one of the new materials for energy storage applications that are transition metal dichalcogenides (TMDs). In this work, <i>Camellia sinensis</i> extract was used as a natural reducing and stabilizing agent in the green hydrothermal synthesis of magnesium-doped WS<sub>2</sub> (Mg-WS<sub>2</sub>). The hexagonal structure and a modest increase in d-spacing (from 5.967 to 6.027 Å) were shown by X-ray diffraction (XRD), and improved porosity was demonstrated by Brunauer–Emmett–Teller (BET) surface area analysis. UV-Vis absorption spectroscopy and Fourier-transform infrared (FTIR) spectroscopy verified the optical spectrum’s blue shift and structural integrity, which suggested better electronic characteristics. The faradic behavior is validated by cyclic voltammetry (CV), and galvanostatic charge-discharge (GCD) shows an elevated specific capacitance of 274.5 F/g at 2 A/g for the Mg-doped sample. Improved ion diffusion and a significant drop in charge transfer resistance (from 8.72 to 5.64 Ω) were shown by electrochemical impedance spectroscopy (EIS). Increased surface flaws, wider interlayer spacing, and improved conductivity brought about by magnesium doping are responsible for these enhancements. This study demonstrates Mg-WS<sub>2</sub> potential as a sustainable, high-performance electrode material for supercapacitor applications.</p> Graphical Abstract <p></p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Green hydrothermal synthesis of Mg-doped transition metal dichalcogenides using Camellia sinensis extract for enhanced energy storage

  • 期刊论文

  • 发表日期：

    2025年6月9日

查看全文
  • Ali Mujtaba,
  • M. I. Khan,
  • M. Arslan Nadeem,
  • Muzammal Aslam,
  • Mongi Amami,
  • Nasir Mehmood

摘要

Tungsten disulfide (WS2) is one of the new materials for energy storage applications that are transition metal dichalcogenides (TMDs). In this work, Camellia sinensis extract was used as a natural reducing and stabilizing agent in the green hydrothermal synthesis of magnesium-doped WS2 (Mg-WS2). The hexagonal structure and a modest increase in d-spacing (from 5.967 to 6.027 Å) were shown by X-ray diffraction (XRD), and improved porosity was demonstrated by Brunauer–Emmett–Teller (BET) surface area analysis. UV-Vis absorption spectroscopy and Fourier-transform infrared (FTIR) spectroscopy verified the optical spectrum’s blue shift and structural integrity, which suggested better electronic characteristics. The faradic behavior is validated by cyclic voltammetry (CV), and galvanostatic charge-discharge (GCD) shows an elevated specific capacitance of 274.5 F/g at 2 A/g for the Mg-doped sample. Improved ion diffusion and a significant drop in charge transfer resistance (from 8.72 to 5.64 Ω) were shown by electrochemical impedance spectroscopy (EIS). Increased surface flaws, wider interlayer spacing, and improved conductivity brought about by magnesium doping are responsible for these enhancements. This study demonstrates Mg-WS2 potential as a sustainable, high-performance electrode material for supercapacitor applications.

Graphical Abstract