Construction of Flexible Supercapacitors from Metal Organic Framework Composite Electrode

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 (G/PANI)@cotton cloth (CC) was synthesized by a facile and novel two-step strategy for supercapacitors. The electrode material exhibited areal specific capacitance of ۸۸.۱۵ mF cm−۲ at a current of ۰.۳ mA. Long-term stability test demonstrates that ۸۴.۰۵% of the original capacitance remains after ۱۰,۰۰۰ cycles at the current density of ۰.۲ mA cm−۲. The results indicate that NiCo-LDH/G/PANI@CC will be an appropriate candidate for high-performance supercapacitors. The NiCo-LDH/G/PANI@CC//NiCo-LDH/G/PANI@CC flexible solid-state supercapacitor was assembled with the PVA/KOH gel electrolyte.

کلیدواژه ها:

Cotton cloth ، NiCo-LDH ، supercapacitor ، specific capacitance