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<p>Molybdenum disulfide (MoS<sub>2</sub>) is a transition metal sulfide characterized by a two-dimensional layered architecture. It is regarded as a promising electrode material for energy storage systems. The suboptimal rate performance, limited cyclic stability, quick capacity degradation, and elevated electrical resistance hinder the employment of MoS<sub>2</sub> in energy storage. This study involved the preparation of MoS<sub>2</sub>, MoS<sub>2</sub>@activated carbon and MoS<sub>2</sub>@N-S doped activated carbon using hydrothermal treatment. MoS<sub>2</sub>@AC and MoS<sub>2</sub>@N-AC nanocomposites, serving as supercapacitor electrodes, exhibited capacitances of 522 and 934&#xa0;F g<sup>− 1</sup> at 1&#xa0;A g<sup>− 1</sup>, respectively, while retaining 91% and 97% of their initial capacitance after 5000 cycles. The findings indicate that hollow mesoporous carbon spheres, as a substrate, can enhance ion and charge transport while alleviating collapse phenomena of MoS<sub>2</sub> throughout the cycle process. Simultaneously, N-doping can offer numerous active sites for electrochemical reactions, hence augmenting energy storage capacity. The nanocomposites produced by this method exhibit diverse potential in the field of energy storage.</p>

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Ion transport and interfacial charge storage in N, S-doped activated carbon–MoS₂ hybrid electrodes for supercapacitors

  • 期刊论文

  • 发表日期：

    2026年7月29日

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  • R. Priyadharsini,
  • J. Balavijayalakshmi

摘要

Molybdenum disulfide (MoS2) is a transition metal sulfide characterized by a two-dimensional layered architecture. It is regarded as a promising electrode material for energy storage systems. The suboptimal rate performance, limited cyclic stability, quick capacity degradation, and elevated electrical resistance hinder the employment of MoS2 in energy storage. This study involved the preparation of MoS2, MoS2@activated carbon and MoS2@N-S doped activated carbon using hydrothermal treatment. MoS2@AC and MoS2@N-AC nanocomposites, serving as supercapacitor electrodes, exhibited capacitances of 522 and 934 F g− 1 at 1 A g− 1, respectively, while retaining 91% and 97% of their initial capacitance after 5000 cycles. The findings indicate that hollow mesoporous carbon spheres, as a substrate, can enhance ion and charge transport while alleviating collapse phenomena of MoS2 throughout the cycle process. Simultaneously, N-doping can offer numerous active sites for electrochemical reactions, hence augmenting energy storage capacity. The nanocomposites produced by this method exhibit diverse potential in the field of energy storage.