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Low-cost high-integrated flexible ultrathin ultralight supercapacitor

A supercapacitor, a low-cost technology, applied in the manufacture of hybrid capacitor separators, hybrid/electric double layer capacitors, etc., can solve the problems of degraded energy storage and cycle stability, complicated preparation process and process, and poor electrochemical performance , to achieve long life and work stability, clear appearance, and improve mechanical strength

Inactive Publication Date: 2014-01-29
LANZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Most of the currently used supercapacitors use separate components such as working electrodes, current collectors and diaphragms. The preparation process and process are complicated, the cost is high, the weight and volume are large, and the flexibility is poor.
At the same time, when the supercapacitor composed of such separate parts undergoes deformation such as bending or folding, the relative movement of each part will greatly damage the device structure, resulting in poor electrochemical performance, degraded energy storage and cycle stability. Key Issues in Flexible Supercapacitors Based on Assembly of Separate Parts

Method used

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  • Low-cost high-integrated flexible ultrathin ultralight supercapacitor
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  • Low-cost high-integrated flexible ultrathin ultralight supercapacitor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Example 1 The preparation method of this supercapacitor comprises the following steps:

[0034] (1) Preparation of polymer solution: Dissolve 1 g of polymer in 9 g of N, N dimethylformamide solvent and stir at room temperature for 2 hours to obtain a transparent and clear polymer solution.

[0035] Wherein: the polymer refers to polyacrylonitrile.

[0036] (2) Preparation of polymer nanofiber separator 1:

[0037] Put the polymer solution into a syringe with a spinneret, and form a strong electric field by applying a high voltage of 10~30kV between the spinneret and the collecting plate. At this time, the jet stream is accelerated and pulled under the action of the strong electric field. The continuous reduction is accompanied by the volatilization of the solvent and the solidification of the fibers, and finally a polymer nanofiber membrane 1 with a thickness of 40-150 μm is obtained on the collecting plate.

[0038] Wherein: the distance between the spinneret a...

Embodiment 2

[0043] Example 2 The preparation method of this supercapacitor comprises the following steps:

[0044] ⑴ Prepare the polymer solution with Example 1 . Wherein: polymer refers to polyacrylic acid.

[0045] ⑵Preparation of polymer nanofiber separator 1 with Example 1 .

[0046] (3) Use the magnetron sputtering method to form a metal conductive layer with a thickness of 200-400nm on the positive and negative sides of the polymer nanofiber diaphragm 1 facing each other, and then immerse the polymer nanofiber diaphragm 1 at a concentration of The 0.02M aqueous solution or metal salt solution containing electroactive substances is used as the working electrode, the platinum electrode is used as the counter electrode, and the saturated calomel is used as the reference electrode, and the electrochemical workstation is used to provide 0~1.0V between the working electrode and the counter electrode After depositing the electroactive material on the metal conductive layer to f...

Embodiment 3

[0050] Example 3 The preparation method of this supercapacitor comprises the following steps:

[0051] ⑴ Prepare the polymer solution with Example 1 . Wherein: polymer refers to polyethylene glycol.

[0052] ⑵Preparation of polymer nanofiber separator 1 with Example 1 .

[0053] (3) Use the method of magnetron sputtering to form a metal conductive layer with a thickness of 400-600 nm on the positive and negative sides of the polymer nanofiber diaphragm 1 facing each other, and then immerse the polymer nanofiber diaphragm 1 at a concentration of The 0.03M aqueous solution or metal salt solution containing electroactive substances is used as the working electrode, the platinum electrode is used as the counter electrode, and saturated calomel is used as the reference electrode, and the electrochemical workstation is used to provide 0~1.0V between the working electrode and the counter electrode After depositing the electroactive material on the metal conductive layer t...

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Abstract

The invention relates to a low-cost high-integrated flexible ultrathin ultralight supercapacitor comprising a polymer nanofiber diaphragm, an anode and a cathode. The polymer nanofiber diaphragm is 40-150 micrometers in thickness, and the anode and the cathode are directly made on front and back of the polymer nanofiber diaphragm. Meanwhile, the invention further discloses a production method of the supercapacitor. The supercapacitor is small in size, light in weight and high in energy storing capacity; the production method is simple; the supercapacitor is low in cost, convenient to industrialize and widely applicable to the fields such as lightweight aircrafts, portable energy storage systems, and wearable power systems.

Description

Technical field [0001] The invention involves the field of lightweight flexible energy storage devices, especially low -cost high -quality ultra -thin super -light super capacitors. Background technique [0002] With the development of electronic products, high -performance flexible energy storage devices play an increasingly important role in daily life due to their portable and multifunctional advantages.As a new type of energy storage device, electrochemical capacitors (also known as supercapacitors) have attracted the attention of many researchers with the advantages of high -power, short charging time, high reliability, and long life.The system is developing rapidly. [0003] At present, most of the supercapacitors used in the applications use separated components such as working electrodes, current collection poles and diaphragms. The preparation process and process are complicated, the cost is high, the weight and volume are large, and the flexibility is poor.At the same t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/52H01G11/84
CPCY02E60/13
Inventor 谢二庆张鹏何勇民龚成师陈万军
Owner LANZHOU UNIVERSITY
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