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Flexible supercapacitor

A supercapacitor, flexible technology, used in hybrid capacitor electrodes, hybrid/electric double layer capacitor manufacturing, etc., can solve problems such as poor durability, achieve good bending performance, improve foldable performance and durability.

Active Publication Date: 2021-12-17
深圳市宏卓远电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a flexible supercapacitor, which solves the problem of poor durability of supercapacitor components after bending

Method used

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Examples

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Embodiment 1

[0029] A preparation method for a flexible supercapacitor, comprising the following steps:

[0030] (1) First, add 25g of tributyl phosphate into the reaction flask, stir and heat to 140°C and keep the temperature, add 8g of N-methylimidazole dropwise into the tributyl phosphate, keep stirring at the temperature for 2 hours to obtain the ionic liquid, and then Dissolve 10 g of microcrystalline cellulose in the ionic liquid, and continue to keep stirring at the temperature for 4 hours to obtain ionic liquid-modified microcrystalline cellulose, which is set aside;

[0031] (2) Take 10 g of the ionic liquid modified microcrystalline cellulose prepared in step (1) in a reaction flask, add 20 g of aluminum chloride in batches under constant stirring in a nitrogen atmosphere, mix well, cool with an ice-water bath, and use CHI760D electrochemical workstation conducts constant current electrolysis and electrodeposition of aluminum. During electrolysis, use magnetic stirring and mainta...

Embodiment 2

[0036] A preparation method for a flexible supercapacitor, comprising the following steps:

[0037] (1) First, add 26g of tributyl phosphate into the reaction flask, stir and heat to 145°C and keep the temperature, add 9g of N-methylimidazole dropwise into the tributyl phosphate, keep stirring for 3 hours to obtain the ionic liquid, and then Dissolve 12 g of microcrystalline cellulose in the ionic liquid, and continue to maintain the temperature and stir for 5 hours to obtain ionic liquid-modified microcrystalline cellulose, which is set aside;

[0038] (2) Take 10 g of the ionic liquid modified microcrystalline cellulose prepared in step (1) in a reaction flask, add 20 g of aluminum chloride in batches under constant stirring in a nitrogen atmosphere, mix well, cool with an ice-water bath, and use CHI760D electrochemical workstation conducts constant current electrolysis and electrodeposition of aluminum. During electrolysis, stir with magnetic force and maintain a constant s...

Embodiment 3

[0043] A preparation method for a flexible supercapacitor, comprising the following steps:

[0044] (1) First, add 27g of tributyl phosphate into the reaction flask, stir and heat to 148°C and keep the temperature, add 9.5g of N-methylimidazole dropwise into the tributyl phosphate, keep stirring for 3.5h at the temperature to obtain the ionic liquid , and then dissolving 13 g of microcrystalline cellulose in the ionic liquid, and continuing to maintain the temperature and stirring for 4.5 hours to obtain ionic liquid-modified microcrystalline cellulose, which is set aside;

[0045] (2) Take 10 g of the ionic liquid modified microcrystalline cellulose prepared in step (1) in a reaction flask, add 20 g of aluminum chloride in batches under constant stirring in a nitrogen atmosphere, mix well, cool with an ice-water bath, and use CHI760D electrochemical workstation conducts constant current electrolysis and electrodeposition of aluminum. During electrolysis, magnetic stirring is ...

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Abstract

The invention provides a flexible supercapacitor which is formed by attaching a microcrystalline fiber positive electrode gel thin film with a graphene surface and a microcrystalline fiber negative electrode gel thin film with a zinc-based surface. The graphene surface and the zinc-based surface both face outwards. Edge covering and laminating are then conducted on a microcrystalline fiber composite current-collecting gel thin film with an aluminum film surface, and the laminated gel thin film is pressed on the protective film through a dry film laminator, thereby obtaining the positive electrode gel thin film which is obtained by organically compounding ionic liquid modified microcrystalline cellulose and hydroxylated graphene through a hydrogen-bond interaction. The microcrystalline cellulose is modified by the ionic liquid and then is compounded with the aluminum film and the zinc film in an electro-deposition manner, and the microcrystalline cellulose is combined with hydroxylated graphene through hydrogen bond interaction and is horizontally oscillated to form a graphene layer, so that the positive electrode, the negative electrode and the current collector are endowed with good bending performance; therefore, the foldable performance and the durability of the supercapacitor are improved.

Description

technical field [0001] The invention relates to the technical field of supercapacitors, in particular to a flexible supercapacitor. Background technique [0002] In recent years, the growing demand for wearable electronics, new energy technologies, and smart devices has continuously stimulated the development of flexible energy storage materials. Flexible supercapacitors have attracted extensive attention due to their fast charge-discharge rates, high power density, long-term cycle stability, and large deformation energy supply. These flexible energy storage materials can be integrated with innovative functions, such as wearable sensing, smart display, and autonomous power supply characteristics. According to the charge storage mechanism, supercapacitors are usually divided into double-layer capacitors, pseudocapacitors and hybrid supercapacitors. The flexibility of supercapacitors has always been one of the research hotspots. [0003] Factors that affect the flexibility o...

Claims

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Application Information

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IPC IPC(8): H01G11/30H01G11/86
CPCH01G11/30H01G11/86Y02E60/13
Inventor 邱旭赵欢
Owner 深圳市宏卓远电子科技有限公司
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