Preparation method of wide-temperature-range electrolyte for supercapacitor

A supercapacitor, wide temperature range technology, used in the manufacture of hybrid capacitor electrolytes, hybrid/electric double layer capacitors, etc., can solve the problems of high price, narrow voltage window, flammability, etc., to improve the use effect and service life, The effect of wide electrochemical stability window and wide operating temperature range

Inactive Publication Date: 2020-08-28
ANHUI PUHE ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Generally, organic electrolytes are highly toxic and have a narrow voltage window; although ionic liquid electrolytes have a high voltage window, they are usually mixed with organic solvents such as acetonitrile, are volatile and flammable, and are expensive

Method used

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  • Preparation method of wide-temperature-range electrolyte for supercapacitor
  • Preparation method of wide-temperature-range electrolyte for supercapacitor
  • Preparation method of wide-temperature-range electrolyte for supercapacitor

Examples

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Comparison scheme
Effect test

Embodiment 1

[0023] Example 1: A preparation method of wide temperature range electrolyte for supercapacitor

[0024] An electrolytic solution with a wide temperature range for a supercapacitor and a preparation method thereof, characterized in that it includes the following technical steps.

[0025] (1) material preparation

[0026] An electrolytic solution with a wide temperature range for a supercapacitor is composed of an electrolyte and a solvent.

[0027] The electrolyte is one or more combinations of tetramethylammonium bromide, tetraethylammonium bromide, tetrapropylammonium bromide, tetrabutylammonium bromide and the like. The tetramethylammonium bromide, tetraethylammonium bromide, tetrapropylammonium bromide and tetrabutylammonium bromide are of reagent grade with a purity of ≥98.0%.

[0028] The solvent is ethylene glycol. The ethylene glycol is reagent grade with a purity of ≥98.0%.

[0029] (2) deployment

[0030] A certain mass of solute is evenly added to ethylene glyc...

Embodiment 2

[0041] Embodiment 2: A kind of preparation method of wide temperature zone electrolyte solution for supercapacitor

[0042] The difference from Example 1 is:

[0043] Solute: tetraethylammonium bromide, the concentration of the electrolyte is 4.5 mol / L; solvent: ethylene glycol; the test temperature is 0°C.

Embodiment 3

[0044] Embodiment 3: A kind of preparation method of wide temperature zone electrolyte solution for supercapacitor

[0045] An electrolytic solution with a wide temperature range for a supercapacitor and a preparation method thereof are prepared from the following raw materials.

[0046] The difference from Example 1 is:

[0047] Solute: tetrapropylammonium bromide, the concentration of the electrolyte is 6.5 mol / L; solvent: ethylene glycol; the test temperature is 60°C.

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Abstract

The invention discloses a preparation method of a wide-temperature-range electrolyte for a supercapacitor, which comprises the steps of 1, uniformly adding a solute into ethylene glycol, and heating to a temperature of 70-120 DEG C at a heating speed of 3-10 DEG C / min while adding the solute; 2, putting the solution obtained in the step 1 into a container with a micro-bubble generator, and starting the micro-bubble generator; and 3, putting the solution obtained in the step 2 into a disc separator, discharging slag, and collecting a settled material to obtain the wide-temperature-range electrolyte for the supercapacitor. The electrolyte composed of tetramethyl ammonium bromide, tetraethylammonium bromide, tetrapropylammonium bromide, tetrabutylammonium bromide and ethylene glycol can effectively regulate and control hydrogen bonds in the solution, is used as a supercapacitor, and has the characteristics of wide electrochemical stability window and wide operation temperature zone.

Description

technical field [0001] The invention belongs to the technical field of supercapacitors, and in particular relates to a method for preparing an electrolyte solution in a wide temperature range for supercapacitors. Background technique [0002] Supercapacitor, as a new type of green energy storage device, has the characteristics of fast charge and discharge, and has attracted the attention of many researchers from all over the world. Compared with lithium-ion batteries, although the energy density of supercapacitors is not as good as the former, it has the characteristics of high power density, good cycle stability and rate performance, and low production cost. With the continuous deepening of people's research on supercapacitors, it has been widely used in many fields such as new energy vehicles, aerospace and digital communication equipment. [0003] At present, various electrolytes have been widely used in supercapacitors, mainly including aqueous, organic and ionic liquid...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/84H01G11/62H01G11/58
CPCH01G11/58H01G11/62H01G11/84Y02E60/13
Inventor 陈祥迎刘劲松
Owner ANHUI PUHE ELECTRONICS
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