Synthesis of 3D nanoflower-like mesoporous NiCo2O4 N-doped CNTs nanocomposite for solid-state hybrid supercapacitor; efficient material for the positive electrode
| Autor: | Swapnil S. Karade, Ajay D. Jagadale, Dae-Young Kim, Hemraj M. Yadav, Surendra Shinde, Nagesh Maile, Monali B. Jalak, Gajanan Ghodake, Dae Sung Lee |
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| Rok vydání: | 2021 |
| Předmět: |
Supercapacitor
Nanocomposite Materials science Process Chemistry and Technology Composite number Carbon nanotube Nanoflower Surfaces Coatings and Films Electronic Optical and Magnetic Materials law.invention Chemical engineering law Electrode Materials Chemistry Ceramics and Composites Mesoporous material Eutectic system |
| Zdroj: | Ceramics International. 47:31650-31665 |
| ISSN: | 0272-8842 |
| Popis: | In this research work, we report a novel method for developing ternary NiCo2O4 compounds using deep eutectic solvents (DESs) and a strategy for improving their pseudocapacitive performance. NiCo2O4 composites with N-doped carbon nanotubes (NCNTs) were fabricated on Ni foam using a hydrothermal method. The electrochemical performance of the NiCo2O4 was altered with the change in the reaction temperature. The composite of NiCo2O4 and NCNTs demonstrated a maximum value of specific capacity of 303 mAh g−1 at a scan rate of 5 mV s−1. The specific capacity for the composite compound was 1.3-fold greater than that of the pristine NiCo2O4 sample. For practical applications, we constructed a flexible solid-state hybrid supercapacitor comprised of NiCo2O4/NCNTs//activated carbon (AC) cells with an excellent energy density of 12.31 Wh kg−1, outstanding power density of 8.96 kW kg−1, and tremendous electrode stability. The three-dimensional mesoporous nanoflowers and nanotubes-like nanostructures of NiCo2O4 are well-suited for use in hybrid devices as well as convenient for flexible electronic devices. |
| Databáze: | OpenAIRE |
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