Regional Symposium on Innovation in science and technology

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Construction of Flexible Supercapacitors from Metal Organic Framework Composite Electrode

Authors :

Sara Rammandi¹ Mohammad Hassan Entezari²

1- دانشکده علوم دانشگاه فردوسی مشهد 2- دانشکده علوم دانشگاه فردوسی مشهد

Keywords :

Cotton cloth،NiCo-LDH،supercapacitor،specific capacitance

Abstract :

Nowadays, constructing hetero-structure materials is an efficacious procedure to uplift the electrochemical performance of layered double hydroxide (LDH) materials. The logical design of such elegant nanostructures is still challenging. Herein, NiCo-LDH nanosheets derived from Co-ZIF grown on graphene/polyaniline nanotube (G/PANI-NT)@cotton cloth (CC) was synthesized by a facile and novel two-step strategy for supercapacitors. The electrode material exhibited areal specific capacitance of 88.15 mF cm− 2 at a current of 0.3 mA in 3 M KOH electrolyte. Long-term stability test demonstrates that 84.05 % of the original capacitance remains after 10,000 cycles at the current density of 0.2 mA cm− 2. The results indicate that NiCo-LDH/G/PANI-NT@CC will be an appropriate candidate for high-performance supercapacitors. The NiCo-LDH/G/PANI-NT@CC//NiCo-LDH/G/PANI-NT@CC flexible solid-state supercapacitor was assembled with the PVA/KOH gel electrolyte.

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