Scholarlink

<p>Starting from natural molybdenite concentrate, this study addresses the challenges of impurity content, compact layer stacking, and poor conductivity that hinder its use as a lithium-ion battery (LIB) anode. Impurities such as Si and Fe were effectively removed through a simple hydrothermal alkali leaching combined with acid leaching process. Few-layer MoS<sub>2</sub> was then obtained via liquid-phase exfoliation using N-methyl-2-pyrrolidone and isopropanol solvents. To enhance interfacial interaction and conductivity, MoS<sub>2</sub>–Graphene oxide (GO) composites were synthesized through a solvothermal route. The effects of solvent ratio and GO content on the structure and electrochemical performance were systematically investigated. The optimal water/ethanol (1:5) solvent enabled uniform nanosheet exfoliation with a low charge-transfer resistance (R<sub>ct</sub> = 45.1&#xa0;Ω). The composite with 20 wt% GO delivered a high reversible capacity of 940.7&#xa0;mAh g<sup>−1</sup> at 0.1&#xa0;A g<sup>−1</sup>, maintained 555.4&#xa0;mAh g<sup>−1</sup> at 2.0&#xa0;A g<sup>−1</sup>, and retained 610&#xa0;mAh g<sup>−1</sup> after 200 cycles at 0.5&#xa0;A g<sup>−1</sup>. The synergistic interaction between few-layer MoS<sub>2</sub> and the conductive GO network accelerates electron/ion transport and enhances structural stability, providing a sustainable route to upgrade natural molybdenite for high-performance LIB anodes.</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

A Simple and Scalable Method for Preparing Natural Molybdenite-Based MoS2–Graphene Oxide Composite Anodes via Ultrasonic Exfoliation Combined with a Solvothermal Process

  • 期刊论文

  • 发表日期：

    2026年1月26日

查看全文
  • Hepeng Lu,
  • Bohua Wu,
  • Yukun Zhang,
  • Tingxuan Dong,
  • Qingyong Duan,
  • Shuai Zhang,
  • Sheshe Yang,
  • Xiaoqin Wang,
  • Jinhang Li,
  • Zhen Li,
  • Shanxin Xiong

摘要

Starting from natural molybdenite concentrate, this study addresses the challenges of impurity content, compact layer stacking, and poor conductivity that hinder its use as a lithium-ion battery (LIB) anode. Impurities such as Si and Fe were effectively removed through a simple hydrothermal alkali leaching combined with acid leaching process. Few-layer MoS2 was then obtained via liquid-phase exfoliation using N-methyl-2-pyrrolidone and isopropanol solvents. To enhance interfacial interaction and conductivity, MoS2–Graphene oxide (GO) composites were synthesized through a solvothermal route. The effects of solvent ratio and GO content on the structure and electrochemical performance were systematically investigated. The optimal water/ethanol (1:5) solvent enabled uniform nanosheet exfoliation with a low charge-transfer resistance (Rct = 45.1 Ω). The composite with 20 wt% GO delivered a high reversible capacity of 940.7 mAh g−1 at 0.1 A g−1, maintained 555.4 mAh g−1 at 2.0 A g−1, and retained 610 mAh g−1 after 200 cycles at 0.5 A g−1. The synergistic interaction between few-layer MoS2 and the conductive GO network accelerates electron/ion transport and enhances structural stability, providing a sustainable route to upgrade natural molybdenite for high-performance LIB anodes.

Graphical Abstract