Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Electrolyte for double-electric-layer capacitor

An electric double layer capacitor and electrolyte technology, applied in the field of electrochemistry, can solve the problems of large equivalent internal resistance, low affinity, and high viscosity of pyridine ionic liquids in electric double layer capacitors, and achieve high surface tension and high viscosity. , the effect of reducing the equivalent internal resistance

Inactive Publication Date: 2014-01-15
OCEANS KING LIGHTING SCI&TECH CO LTD +1
View PDF0 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Pyridine-based ionic liquids are one of the newly developed ionic liquid electrolytes. However, pyridine-based ionic liquids have high viscosity and low affinity with PP (polypropylene), PE (polyethylene), etc., so that pure pyridine-based ionic liquids are used as The equivalent internal resistance of the electric double layer capacitor with electrolyte is too large

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
  • Electrolyte for double-electric-layer capacitor
  • Electrolyte for double-electric-layer capacitor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] In the glove box, mix propylpyridinium tetrafluoroborate and tridecyltrimethylsilane with a molar ratio of 1:0.04, that is, 5 mol and 0.2 mol respectively, and stir for 30 minutes, tridecane Trimethylsilane is uniformly dispersed in propylpyridinium tetrafluoroborate to obtain an electrolytic solution for electric double layer capacitors.

[0022] figure 1 For the electric double layer capacitor using the electrolytic solution for the electric double layer capacitor obtained in Example 1 as the electrolyte (the diaphragm of the capacitor is made of PP material) and the electric double layer capacitor using pure ionic liquid propylpyridine tetrafluoroborate as the electrolyte The AC impedance spectrum of an electric double layer capacitor; where the abscissa is the real part, and the ordinate is the imaginary part (the data measured by the AC impedance is a complex number obtained through mathematical model processing, and the AC impedance spectrum is a complex plane gra...

Embodiment 2-20

[0024] Embodiment 2-20 sees following form:

[0025]

[0026] Note: In the table,

[0027] 1. A represents ionic liquid, B represents alkyltrimethylsilane; A:B represents the respective moles of A and B, for example, A:B is 2:0.08, which means that the moles of A are 2mol and the moles of B 0.08mol;

[0028] 2. The reduction ratio of the equivalent internal resistance is the ratio of the equivalent internal resistance of the electric double layer capacitor using the electrolyte of this embodiment in the corresponding embodiment to the ionic liquid without adding alkyltrimethylsilane measured under the same conditions The percentage reduction of the equivalent internal resistance of the electric double layer capacitor;

[0029] 3. In Examples 2 to 20, various preparation processes and test conditions are the same as in Example 1.

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

No PUM Login to View More

Abstract

The invention belongs to the field of electrochemistry, and discloses an electrolyte for a double-electric-layer capacitor. The electrolyte for the double-electric-layer capacitor comprises pyridines ionic liquid and alkyl trimethyl silane, and the molar ratio of the pyridines ionic liquid and the alkyl trimethyl silane is 1:0.001-1:0.05. According to the electrolyte for the double-electric-layer capacitor, the affinity of the pyridines ionic liquid and diaphragm materials such as PP and PE is small due to high viscosity and large surface tension of the pyridines ionic liquid, so that the equivalent internal resistance of the double-electric-layer capacitor with the pure pyridines ionic liquid being used as the electrolyte is large, after the alkyl trimethyl silane is added in the pyridines ionic liquid, due to the fact that the alkyl trimethyl silane is a nonionic surface active agent, the alkyl trimethyl silane can increase the affinity of the pyridines ionic liquid and the diaphragm materials such as the PP and the PE commonly used for capacitors, and the equivalent internal resistance of the double-electric-layer capacitor is greatly lowered. Therefore, the equivalent internal resistance of the double-electric-layer capacitor is greatly lowered.

Description

technical field [0001] The invention relates to the field of electrochemistry, in particular to an electrolyte solution for an electric double layer capacitor. Background technique [0002] Electric double layer capacitor is a new type of energy storage device, which has the advantages of high power density, high cycle life, and fast charge and discharge performance. It is widely used in military fields, mobile communication devices, computers, and hybrid power supplies for electric vehicles. As an important part of electric double layer capacitors, the electrolyte has a great influence on the storage performance of electric double layer capacitors, which determines the equivalent internal resistance, working voltage range, storage capacity, working temperature and working environment of the capacitor. [0003] Ionic liquids are organic liquid substances composed entirely of ions at or near room temperature. As a new type of electrolyte, the emergence of ionic liquids has g...

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
Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/64
CPCY02E60/13
Inventor 周明杰邓惠仁王要兵
Owner OCEANS KING LIGHTING SCI&TECH CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com