NiCo 2 S 4 /MoS 2 Nanocomposites for Long-Life High-Performance Hybrid Supercapacitors
Metal sulfides (MS) and mixed metal sulfides (MTMS) have been considered potential candidates over their metal oxide/mixed metal oxide counterparts in recent years. Herein, one MTMS, i.e., NiCo S , was combined with 2D MS MoS through a single-step solvothermal process with different morphologies (sh...
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Veröffentlicht in: | Nanomaterials (Basel, Switzerland) Switzerland), 2023-02, Vol.13 (4) |
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Hauptverfasser: | , , , , , , |
Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | Metal sulfides (MS) and mixed metal sulfides (MTMS) have been considered potential candidates over their metal oxide/mixed metal oxide counterparts in recent years. Herein, one MTMS, i.e., NiCo
S
, was combined with 2D MS MoS
through a single-step solvothermal process with different morphologies (sheet-like and rod-like) for supercapacitor applications. The resulting electrode exhibited excellent coulombic efficiency, high specific capacitance, superior energy density, and, most importantly, ultra-high cycling stability. In particular, the electrode delivered a capacitance of 2594 F g
at 0.8 A g
after 45,000 charge/discharge cycles with a remarkable stability of 192%. Moreover, the corresponding hybrid supercapacitor device displayed an impressive coulombic efficiency of 123% after 20,000 cycles and 118% after 45,000 cycles. In addition, the device also exhibited a decent energy density of 31.9 Wh kg
and good cycling stability of 102% over 15,000 cycles. |
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ISSN: | 2079-4991 2079-4991 |