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A kind of high power long linear supercapacitor and preparation method thereof

A supercapacitor, high-power technology, used in the manufacture of hybrid/electric double-layer capacitors, hybrid capacitor electrodes, hybrid capacitor electrolytes, etc. The effect of improving power and capacity, and improving axial conductivity

Active Publication Date: 2018-10-16
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is: to overcome the technical problems such as the poor power characteristics of the long linear supercapacitor

Method used

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  • A kind of high power long linear supercapacitor and preparation method thereof
  • A kind of high power long linear supercapacitor and preparation method thereof
  • A kind of high power long linear supercapacitor and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0036] Step 1: Material preparation: put the glass pieces into deionized water and ethanol respectively, ultrasonically clean for 20 minutes, and blow dry with nitrogen; carbon nanotube powder treatment: put 0.5g of carbon nanotube powder into concentrated nitric acid and water with a volume ratio of 1 : 2 in 60ml acid solution, stir and soak for more than 6 hours, then pour the turbid liquid into a centrifuge tube and centrifuge until neutral, take it out and bake it in a vacuum oven at 80°C for 12 hours to remove some of the carbon nanotube powder. impurity ions.

[0037] Step 2: Configuration of active material dispersion: 0.08g GO and 0.08g MCNTs were added to 40mL DMF solution, respectively, and sonicated in ice bath for 3 hours in a 600W sonicator to prepare a solution of 2mg / ml respectively, and then measure 20ml of GO solution Mix with 10 ml of MCNTs solution and sonicate for 1 hour.

[0038] Step 3: Preparation of single electrode for supercapacitor: scrape a film with...

Embodiment 2

[0042] The difference between this example and Example 1 is: in step 3, the length of the glass sheet was changed to 30 cm, the amount of dripping was changed to 480 μl, and the number of twisting turns was changed to 2400 turns, and the rest of the steps were the same as those in Example 1.

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Abstract

The invention relates to a long linear super capacitor with high power. The long linear super capacitor comprises a conductive substrate, an active material, and a gel electrolyte. The active material is arranged on the conductive substrate through drop casting. The active material is coated by a carbon nanotube film which is coated by the gel electrolyte. The conductive substrate is a sandwich structure of sequential carbon nanotube film / silver nanowires / sequential carbon film. The active material is a GO / MCNTs complex. The gel electrolyte is a PVA / H3PO4 electrolyte. A preparation method of the long linear super capacitor comprises the steps of depositing the active material on the sandwich structure of sequential carbon nanotube film / silver nanowires / sequential carbon film, twisting to form linear electrodes, and finally preparing the long linear super capacitor through twisting by using two same linear electrodes. According to the long linear super capacitor and the method, the efficiency is high, the stability is good, the realization of industrialized production is facilitated, the axial conductivity of the long linear super capacitor is improved, and thus the power characteristic of the long linear super capacitor is improved.

Description

technical field [0001] The invention relates to a high-power long linear supercapacitor and a preparation method thereof. Background technique [0002] With the rapid development of lightweight, flexible and wearable electronic devices, the energy storage systems that provide energy for them also need to develop towards flexibility and efficiency. Among them, linear flexible supercapacitors are considered to be one of the most promising candidates due to their high power density, fast charge-discharge rate, good flexibility and weavability, light weight, low cost, and environmental friendliness. . Fibers can be processed into two-dimensional or even three-dimensional flexible lightweight materials by weaving, knotting, sewing and other means, which are widely used in daily life, transportation, industrial production, aerospace and national defense security and other fields. Carbon materials (such as activated carbon, carbon nanotubes, graphene, etc.) have excellent electri...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G11/26H01G11/30H01G11/32H01G11/36H01G11/56H01G11/84
CPCY02E60/13
Inventor 丁建宁周小双袁宁一徐江
Owner CHANGZHOU UNIV
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