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<p>Designing promising electrode material for supercapacitor application with rich redox activities, high capacity and great cycling stability has become a research priority. Herein, a nanohybrid (CoS<sub>1.097</sub>-NiS-MoS<sub>2</sub>) with nanosheets combining nanorods morphology is prepared by high-temperature pyrolysis sulfuration of ZIF-67/NiMoO<sub>4</sub>. Co-existence of multiple crystalline phases is favorable for enriching electrochemical active sites and facilitating electron transfer. Consequently, CoS<sub>1.097</sub>-NiS-MoS<sub>2</sub> displays better supercapacitor performance with a specific capacity of 373.6 C g<sup>−1</sup> at current density of 1 A g<sup>−1</sup> and excellent cycling stability of 70.01% after 3000 cycles, surpassing CoS<sub>1.097</sub> (49.1 C g<sup>−1</sup>; 59.26%) and NiS-MoS<sub>2</sub> (105.8 C g<sup>−1</sup>; 62.00%). Moreover, a hybrid supercapacitor is assembled with CoS<sub>1.097</sub>-NiS-MoS<sub>2</sub> and activated carbon, exhibiting high energy density of 21.0 Wh kg<sup>−1</sup> at 800 W kg<sup>−1</sup>. This work opens a path for preparation of promising ternary metal sulfide-based materials for the field of energy storage.</p>

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Preparation of CoS1.097-NiS-MoS2 battery-type electrode material by sulfuration of ZIF-67/NiMoO4 for hybrid supercapacitor application

  • 期刊论文

  • 发表日期：

    2025年8月7日

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  • Feng Xiao,
  • Lei Wang,
  • Qihang He,
  • Fan Xu,
  • Donghua Wu,
  • Chao Chen,
  • Ping He,
  • Bin Tang

摘要

Designing promising electrode material for supercapacitor application with rich redox activities, high capacity and great cycling stability has become a research priority. Herein, a nanohybrid (CoS1.097-NiS-MoS2) with nanosheets combining nanorods morphology is prepared by high-temperature pyrolysis sulfuration of ZIF-67/NiMoO4. Co-existence of multiple crystalline phases is favorable for enriching electrochemical active sites and facilitating electron transfer. Consequently, CoS1.097-NiS-MoS2 displays better supercapacitor performance with a specific capacity of 373.6 C g−1 at current density of 1 A g−1 and excellent cycling stability of 70.01% after 3000 cycles, surpassing CoS1.097 (49.1 C g−1; 59.26%) and NiS-MoS2 (105.8 C g−1; 62.00%). Moreover, a hybrid supercapacitor is assembled with CoS1.097-NiS-MoS2 and activated carbon, exhibiting high energy density of 21.0 Wh kg−1 at 800 W kg−1. This work opens a path for preparation of promising ternary metal sulfide-based materials for the field of energy storage.