A high working voltage super capacitor and its making method

A supercapacitor, working voltage technology, applied in capacitor manufacturing, hybrid/electric double layer capacitor manufacturing, electrolytic capacitors, etc., can solve the problem of low working voltage of supercapacitors, achieve high energy density, high power density, good cycle performance Effect

Inactive Publication Date: 2008-09-10
SHANDONG SHENGONGHAITE ELECTRONICS TECH
View PDF0 Cites 16 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The purpose of the present invention is to solve the shortcoming of supercapacitor operating voltage is too low

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
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A high working voltage super capacitor and its making method
  • A high working voltage super capacitor and its making method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] The present invention manufactures a cylindrical supercapacitor through the following steps:

[0053] (1) Making positive electrode slurry. Proportioning of raw materials is carried out according to the following parts by weight:

[0054] Porous activated carbon 90;

[0055] Binder polyvinylidene fluoride (PVDF) 5;

[0056] Conductive agent acetylene carbon black 5;

[0057] Production method: first dissolve 5 parts by weight of polyvinylidene fluoride (PVDF) in 50 parts by weight of nitrogen-methylpyrrolidone (NMP), and then mix 90 parts by weight of porous activated carbon, 5 parts by weight of acetylene carbon black and Mixing, stirring and dispersing are carried out to prepare uniform positive electrode slurry.

[0058] (2) Making negative electrode slurry. Proportioning of raw materials is carried out according to the following parts by weight:

[0059] Negative electrode active material Porous activated carbon 90;

[0060] Binder polyacrylic acid and its de...

Embodiment 2

[0079] Referring to Example 1, the coin supercapacitor of the present invention is manufactured through the following method steps.

[0080] (1) positive electrode slurry and negative electrode slurry carry out raw material proportioning according to following weight parts:

[0081] Porous activated carbon 93;

[0082] Acetylene carbon black 5;

[0083] PTFE 2;

[0084] Preparation method: 93 parts by weight of porous activated carbon and 5 parts by weight of acetylene carbon black are mixed and stirred to obtain uniformly dispersed mixed powder.

[0085] (2) According to the requirements of the electrode size of the manufactured supercapacitor, it is made of 0.5-1.0 g / cm by a punching machine 3 Density powder.

[0086] (3) Cut the isolation film according to the size requirements of the isolation film;

[0087] (4) Laminating a piece of supercapacitor positive electrode sheet, a piece of supercapacitor negative electrode sheet, and a piece of porous isolation film togeth...

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
Login to view more

PUM

PropertyMeasurementUnit
Concentrationaaaaaaaaaa
Diameteraaaaaaaaaa
Thicknessaaaaaaaaaa
Login to view more

Abstract

The invention provides a high-working voltage super capacitor and the manufacturing method, which include: a positive polarizing electrode and a negative polarizing electrode, a multihole isolating film and an electrolyte; the electrolyte is a high-working voltage electrolyte, the electrolyte salt can be ring quaternary alkylphosphonium salt and the solvent of the electrolyte can be ethylene carbonate (EC) or propylene carbonate (PC) and so on. The electrolyte concentration is 0.5-5.0 mol/L; the electrolyte has an electrochemical window of more than 4.6v. The invention adopts the high-working voltage super capacitor electrolyte which has a wider electrochemical window; the high-working voltage super capacitor made by utilizing the high electrochemical decomposition voltage can not only keep the characteristics of high power density and better cycle performance, but also have higher working voltage (3.0v-3.5v) and higher energy density.

Description

technical field [0001] The invention relates to a supercapacitor and a manufacturing method thereof, in particular to a high working voltage supercapacitor containing a high working voltage electrolyte and a manufacturing method thereof. Background technique [0002] Supercapacitor is a new type of environmentally friendly energy storage device between traditional capacitors and secondary batteries that has emerged in recent years. While retaining the characteristics of high power density of traditional capacitors, its electrostatic capacity can reach farads or even thousands of farads. , so it also has the characteristics of high energy density. At the same time, the supercapacitor also has the advantages of fast charging and discharging speed, high charging and discharging efficiency, long life, good safety, and environmental friendliness. It is a new, practical and efficient energy storage device. . [0003] According to different energy storage principles, supercapacito...

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
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): H01G9/022H01G9/035H01G9/038H01G9/042H01G9/058H01G9/04H01G9/02H01G13/00H01M10/00H01M14/00H01G11/30H01G11/60H01G11/62H01G11/84
CPCY02E60/13
Inventor 李青海吴曲勇
Owner SHANDONG SHENGONGHAITE ELECTRONICS TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap