Scalable and ascendant synthesis of carbon cloth coated hierarchical core-shell CoMoS@Co(OH) for flexible and high-performance supercapacitors
Herein, we propose a novel scalable and ascendant strategy to design a CoMoS@Co(OH) 2 core-shell architecture possessing a CoMoS nanorod "core" and Co(OH) 2 nanoflakes as the "shell" layer wall for flexible all-solid-state supercapacitor application. The surface architecture and...
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Veröffentlicht in: | Journal of materials chemistry. A, Materials for energy and sustainability Materials for energy and sustainability, 2018-05, Vol.6 (2), p.9592-963 |
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Hauptverfasser: | , |
Format: | Artikel |
Sprache: | eng |
Online-Zugang: | Volltext |
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Zusammenfassung: | Herein, we propose a novel scalable and ascendant strategy to design a CoMoS@Co(OH)
2
core-shell architecture possessing a CoMoS nanorod "core" and Co(OH)
2
nanoflakes as the "shell" layer wall for flexible all-solid-state supercapacitor application. The surface architecture and material properties of the prepared material are characterized by electron microscopy, X-ray diffraction, and X-ray photoelectron spectroscopy. Experimental analysis verifies that the nano-porous core-shell CoMoS@Co(OH)
2
architecture is strongly interconnected with the carbon cloth, ensuring sufficiently porous nanostructures. The core-shell CoMoS@Co(OH)
2
architecture exhibits a high capacitance of 1711 F g
−1
at a current density of 20 mA cm
−2
, demonstrating a powerful synergistic effect efficiently using all of the desired functions of each material constituent. Finally, a flexible all-solid-state supercapacitor is fabricated using CoMoS@Co(OH)
2
and activated carbon as electrodes (CoMoS@Co(OH)
2
//AC) and a polymer-based gel electrolyte. The fabricated flexible CoMoS@Co(OH)
2
//AC asymmetric supercapacitor device delivers an energy density of 58.1 W h kg
−1
over the voltage range of 0-2 V with a capacitance retention of 91.47% after 8000 cycles. The illumination of a red light-emitting diode for more than 1.5 min is experimentally confirmed using a single solid-state CoMoS@Co(OH)
2
//AC supercapacitor. These advantages indicate the considerable potential that the core-shell CoMoS@Co(OH)
2
architecture possesses for commercial applications.
Herein, we propose a novel scalable and ascendant strategy to design a CoMoS@Co(OH)
2
core-shell architecture possessing a CoMoS nanorod "core" and Co(OH)
2
nanoflakes as the "shell" layer wall for flexible all-solid-state supercapacitor application. |
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ISSN: | 2050-7488 2050-7496 |
DOI: | 10.1039/c8ta01931b |