A polyaniline-based mof nanocomposite flexible supercapacitor and preparation method thereof

A nanocomposite material and supercapacitor technology, applied in the field of energy, can solve the problems of reducing specific capacity, increasing polyaniline charge-discharge cycle stability, and reducing specific surface area, so as to achieve good electrochemical characteristics and stability, and improve electrochemical performance. Cycling stability, effect of increasing charge transfer
CN107731545BActive Publication Date: 2019-08-20SHAANXI UNIV OF SCI & TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SHAANXI UNIV OF SCI & TECH
Publication Date
2019-08-20

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Abstract

The invention discloses a polyaniline-based MOF nanocomposite flexible supercapacitor and a preparation method thereof. MIL-101 is one of MOF materials with excellent acid-resistance stability. The method provided by the invention comprises the steps that a PANI / MIL-101 composite material is prepared; the PANI / MIL-101 composite material, acetylene black and polyvinylidene fluoride (PVDF) are uniformly dispersed in N-methyl-2-pyrrolidone (NMP) in a certain proportion to form a slurry, and the slurry is coated on carbon fiber cloth to form electrodes; a gel electrolyte is used to symmetrically stack two electrodes, and the middle space is separated by a diaphragm; and the electrodes are packaged to prepare the flexible supercapacitor. The specific capacity of the electrode material is up to1197 F / g. The prepared supercapacitor has only 10% attenuation of the specific capacity after 1000 times of bending. The cyclic stability test 10000 cycles can maintain more than 90% of the specific capacity. Four supercapacitors are connected in series to light up a 1.8V red LED. The flexible supercapacitor prepared by the invention has good flexibility and electrochemical performance, and has agood application prospect in the aspects of flexible electronic devices and energy storage.
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Description

technical field

[0001] The invention belongs to the technical field of energy, and in particular relates to a preparation method of a bendable flexible energy storage element. Further, the invention relates to a polyaniline-based MOF nanocomposite flexible supercapacitor and a preparation method. Background technique

[0002] In recent years, as electronic products become more and more portable, flexible and wearable, it has become a research hotspot to develop their corresponding energy storage components to make them small, light, flexible and high-performance. Traditional energy storage devices such as batteries and capacitors are basically rigid and rigid, and most of them cannot be bent and folded, and the energy density, power density and charge-discharge cycle stability need to be improved. Supercapacitors have advantages over batteries and traditional capacitors in terms of energy storage due to their better cycle life and higher power density.

[0003] There are ma...

Claims

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