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Three-Dimensional MoS2 Nanodot-Impregnated Nickel Foam Electrodes for High-Performance Supercapacitor Applications.


ABSTRACT: An economical and binder-free electrode was fabricated by impregnation of sub-5 nm MoS2 nanodots (MoS2 NDs) onto a three-dimensional (3D) nickel substrate using the facile dip-coating method. The MoS2 NDs were successfully synthesized by controlled bath sonication of highly crystalline MoS2 nanosheets. The as-fabricated high-surface area electrode demonstrated promising electrochemical properties. It was observed that the as-synthesized NDs outperformed the layered MoS2 peers as the electrode for supercapacitors. MoS2 NDs exhibited an excellent specific capacitance (C sp) of 395 F/g at a current load of 1.5 A/g in a three-electrode configuration. In addition, the fabricated symmetric supercapacitor demonstrated a C sp value of 122 F/g at 1 A/g and a cyclic performance of 86% over 1000 cycles with a gravimetric power and energy density of 10,000 W/kg and 22 W h/kg, respectively. Owing to its simple and efficient fabrication and high surface area, such 3D electrodes show high promise for various energy storage devices.

SUBMITTER: Abraham AM 

PROVIDER: S-EPMC7254773 | biostudies-literature | 2020 May

REPOSITORIES: biostudies-literature

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Three-Dimensional MoS<sub>2</sub> Nanodot-Impregnated Nickel Foam Electrodes for High-Performance Supercapacitor Applications.

Abraham Akhil M AM   Lonkar Sunil P SP   Pillai Vishnu V VV   Alhassan Saeed M SM  

ACS omega 20200515 20


An economical and binder-free electrode was fabricated by impregnation of sub-5 nm MoS<sub>2</sub> nanodots (MoS<sub>2</sub> NDs) onto a three-dimensional (3D) nickel substrate using the facile dip-coating method. The MoS<sub>2</sub> NDs were successfully synthesized by controlled bath sonication of highly crystalline MoS<sub>2</sub> nanosheets. The as-fabricated high-surface area electrode demonstrated promising electrochemical properties. It was observed that the as-synthesized NDs outperforme  ...[more]

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