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<p>This article focuses on the preparation of multifaceted metal sulfides through the design of a rational experimental scheme. By employing component modulation strategies and nanostructure design, the cyclic stability can be enhanced, and the volume expansion of polymetallic sulphides is effectively controlled. Nano-spherical Co<sub>8</sub>NiS<sub>8</sub>/ZnS/Cu<sub>1.8</sub>S is prepared under the optimized experimental conditions, and the results demonstrate that the strategies of nanoengineering design and providing a large volume space to relieve mechanical stresses improve both the sodium storage performance and electrochemical kinetic properties of the mixed-metal sulfides. When Co<sub>8</sub>NiS<sub>8</sub>/ZnS/Cu<sub>1.8</sub>S is used as the working electrode to assemble sodium-ion half-cells, the half-cells exhibit excellent electrochemical performance: a capacity of 498.2 mAh g<sup>− 1</sup> at a current density of 1.0&#xa0;A g<sup>− 1</sup>, and a capacity retention of 72.1% after 500 cycles at a high current of 2.0&#xa0;A g<sup>− 1</sup>.This work presents a novel anode material for sodium-ion batteries with considerable potential.</p>

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Synthesis of Co₈NiS₈/ZnS/Cu1.8S with high cycling and rate performance for sodium-ion storage

  • 期刊论文

  • 发表日期：

    2026年7月14日

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  • Zi-zhao Peng,
  • Dan-dan Wang,
  • Wen-chao Hou,
  • Zhun Gao,
  • Jiu-tong Zhao,
  • Ya-hui Zhang,
  • Shao-hua Luo,
  • Sheng-xue Yan,
  • Qing Wang,
  • Xin Liu

摘要

This article focuses on the preparation of multifaceted metal sulfides through the design of a rational experimental scheme. By employing component modulation strategies and nanostructure design, the cyclic stability can be enhanced, and the volume expansion of polymetallic sulphides is effectively controlled. Nano-spherical Co8NiS8/ZnS/Cu1.8S is prepared under the optimized experimental conditions, and the results demonstrate that the strategies of nanoengineering design and providing a large volume space to relieve mechanical stresses improve both the sodium storage performance and electrochemical kinetic properties of the mixed-metal sulfides. When Co8NiS8/ZnS/Cu1.8S is used as the working electrode to assemble sodium-ion half-cells, the half-cells exhibit excellent electrochemical performance: a capacity of 498.2 mAh g− 1 at a current density of 1.0 A g− 1, and a capacity retention of 72.1% after 500 cycles at a high current of 2.0 A g− 1.This work presents a novel anode material for sodium-ion batteries with considerable potential.