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Fabric-like super capacitor based on graphene and polyaniline and preparation method thereof

A technology of supercapacitors and graphene, which is applied in the manufacture of hybrid/electric double layer capacitors and electrodes of hybrid capacitors, can solve the problems of high-cost materials, and achieve the effects of low cost, guaranteed dispersion, high practicability and feasibility

Active Publication Date: 2015-09-09
FUDAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, the research on energy storage fabrics at home and abroad is still in the laboratory stage, mainly using high-cost materials and adopting preparation methods that are difficult to scale up for small-area (1-2 cm2) energy storage. Construction and testing of fabrics, energy storage fabrics exceeding 5 cm2 have not been reported yet

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • Fabric-like super capacitor based on graphene and polyaniline and preparation method thereof
  • Fabric-like super capacitor based on graphene and polyaniline and preparation method thereof
  • Fabric-like super capacitor based on graphene and polyaniline and preparation method thereof

Examples

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Effect test

Embodiment 1

[0022] (1) Dipping-chemical reduction method to prepare graphene / polyester fabric electrode: use expanded graphite-redox method to prepare graphene oxide, dilute 20 cm 2 The polyester fabric was ultrasonicated in ethanol solution for 10 minutes, dried at 80°C, dipped in 2 mg / mL graphene oxide solution, dried at 80°C, and repeated dipping-drying process 6 times until the surface appeared A uniform golden brown. Under the condition of a water bath at 80°C, the graphene oxide was reduced in hydroiodic acid for 6 h and then taken out, and the fabric electrode was washed three times with ethanol and deionized water alternately to obtain a graphene / polyester fabric electrode;

[0023] (2) Preparation of polyaniline / graphene / polyester fabric electrode by in situ chemical polymerization method: the 20 cm 2 The graphene / polyester fabric electrode was immersed in 100 mL of hydrochloric acid solution (PH=0) with an aniline concentration of 0.5 M / L for 1 hour, and the same volume of ammo...

Embodiment 2

[0027] (1) Preparation of graphene / polyester fabric electrode by dipping-chemical reduction method: graphene oxide was prepared by expanded graphite-redox method, and 100 cm 2 The polyester fabric was sonicated in ethanol and isopropanol solutions for 10 minutes, dried at 80°C, dipped in a 3 mg / mL graphene oxide solution, dried at 80°C, and the dipping-drying process was repeated 8 Repeat until a uniform golden yellow color appears on the surface. Under the condition of a water bath at 80°C, the graphene oxide was reduced in hydroiodic acid for 8 h and then taken out, and the fabric electrode was washed three times with ethanol and deionized water alternately to obtain a graphene / polyester fabric electrode;

[0028] (2) Preparation of polyaniline / graphene / polyester fabric electrode by in situ chemical polymerization method: 100 cm prepared in (1) at room temperature 2The graphene / polyester fabric electrode was immersed in 250 mL of hydrochloric acid solution (PH=0) with an an...

Embodiment 3

[0032] (1) Preparation of graphene / polyester fabric electrode by dipping-chemical reduction method: graphene oxide was prepared by expanded graphite-redox method, and 400 cm 2 The polyester fabric was ultrasonicated in ethanol and isopropanol solutions for 10 minutes, dried at 80 °C, dipped in a 4 mg / mL graphene oxide solution, dried at 80 °C, and the dipping-drying process was repeated for 10 Repeat until a uniform golden yellow color appears on the surface. Under the condition of a water bath at 80°C, the graphene oxide was reduced in hydroiodic acid for 10 h and then taken out, and the fabric electrode was washed three times with ethanol and deionized water alternately to obtain a graphene / polyester fabric electrode;

[0033] (2) Preparation of polyaniline / graphene / polyester fabric electrode by in situ chemical polymerization method: the 400 cm 2 The graphene / polyester fabric electrode was immersed in 500 mL of hydrochloric acid solution (PH=0) with an aniline concentratio...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract

The present invention belongs to the field of fabric-like super capacitor technology and particularly relates to a fabric-like super capacitor based on graphene and polyaniline and a preparation method thereof. A polyester cloth is used as a substrate, through dipping oxide graphene chemical reduction, and in-situ polymerization method load polyaniline is used as a textile electrode. The area ratio capacity of the fabric-like super capacitor in 0.5mA / cm2 discharge current reaches 720mF / cm2. Through designing and building a flexible collector, a 20 cm2 large area fabric-like super capacitor discharges in 1mA current, a device total capacitor reaches 5000 mF, and the discharge capacity reaches 2500 mF in 10 mA current. According to the fabric-like super capacitor, the electrode material with a low use price such as graphene and polyaniline is used, the cost is low, the preparation is simple, the flexibility is excellent, due to a fabric-like shape characteristic, the capacitor can be integrated with clothing, and a wearable device can be powered at any time and any place.

Description

technical field [0001] The invention belongs to the technical field of supercapacitors, and in particular relates to a fabric-like supercapacitor and a preparation method thereof. Background technique [0002] The popularity of wearable devices has brought unprecedented information interaction experience to users. However, insufficient battery life is always a prominent technical bottleneck. Taking the Apple Watch as an example, its battery life is only 5 hours under heavy use, which will obviously greatly reduce the consumer experience. Moreover, the energy supply part of various wearable devices still uses traditional block batteries, which greatly affects the overall flexibility and wearability of the device, and at the same time affects the user experience of consumers. With the widespread popularity of wearable devices, people's demand for energy supply devices that are also flexible, lightweight, and high-performance will become stronger. Therefore, the development ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/48H01G11/86
CPCY02E60/13H01G11/48H01G11/30H01G11/36H01G11/86
Inventor 彭慧胜孙浩解松林
Owner FUDAN UNIV
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