Electrolyte solution and electrochemical component using same

An electrolyte and electrolyte technology, applied in the field of electrolyte, can solve the problems of low conductivity, low energy density, and low capacity, and achieve the effects of high conductivity, high energy density, and high electrostatic capacity

Active Publication Date: 2014-03-12
JIANGSU GUOTAI SUPER POWER NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the organic electrolytes for supercapacitors that are widely used commercially are TEA (tetraethylammonium tetrafluoroborate) organic electrolytes and TEMA (methyltriethylammonium tetrafluoroborate) organic electrolytes, but under particularly harsh conditions , and new applications such as hybrid vehicles that need to be used under high currents still have shortcomings such as low conductivity, low capacity, and low energy density. Therefore, organic electrolysis with high conductivity, high electrostatic capacity, and long-term reliability is developed. liquid becomes imperative

Method used

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  • Electrolyte solution and electrochemical component using same
  • Electrolyte solution and electrochemical component using same
  • Electrolyte solution and electrochemical component using same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0082] (1) Electrolyte dehydration

[0083] 30 parts of methyltriethylammonium tetrafluoroborate (A1), 10 parts of dimethyldiethylammonium tetrafluoroborate (B3), 5 parts of trimethylethylammonium tetrafluoroborate (B5) and 5 parts of tetrafluoroborate Tetramethylammonium fluoroborate (B7) was dried and dehydrated under reduced pressure at 130° C. for 3 hours.

[0084] (2) Electrolyte solvent dehydration

[0085] Add 5 parts of 3A type molecular sieves to 100 parts of propylene carbonate, place at 25°C for 60 hours, after drying, filter out the molecular sieves to obtain dehydrated propylene carbonate.

[0086] (3) Preparation of electrolyte

[0087] 80 parts of dehydrated propylene carbonate, 19 parts of methyltriethylammonium tetrafluoroborate (A1), 0.8 parts of dimethyldiethylammonium tetrafluoroborate (B3), trimethylethylammonium tetrafluoroborate (B5 ) and 0.1 part of tetramethylammonium tetrafluoroborate (B7) were uniformly mixed and dissolved at 25°C to obtain the el...

Embodiment 2

[0089] (1) Electrolyte dehydration

[0090] 30 parts of methyltriethylammonium tetrafluoroborate (A1), 10 parts of dimethyldiethylammonium tetrafluoroborate (B3) and 10 parts of trimethylethylammonium tetrafluoroborate (B5) at 130 ° C Dry and dehydrate under reduced pressure for 3 hours.

[0091] (2) Electrolyte solvent dehydration

[0092] Add 5 parts of 3A type molecular sieves to 100 parts of propylene carbonate and 100 parts of dimethyl carbonate respectively, place at 25°C for 60 hours, after drying, filter out the molecular sieves to obtain dehydrated propylene carbonate and dimethyl carbonate.

[0093] (3) Preparation of electrolyte

[0094] 40 parts of dehydrated propylene carbonate, 40 parts of dimethyl carbonate, 18 parts of methyltriethylammonium tetrafluoroborate (A1), 1.5 parts of dimethyldiethylammonium tetrafluoroborate (B3) and trifluoroborate 0.5 part of methylethylammonium (B5) was uniformly mixed and dissolved at 25° C. to obtain the electrolyte solution ...

Embodiment 3

[0096] (1) Electrolyte dehydration

[0097] 30 parts of methyltriethylammonium tetrafluoroborate (A1) and 10 parts of dimethyldiethylammonium tetrafluoroborate (B3) were dried and dehydrated under reduced pressure at 130° C. for 3 hours.

[0098] (2) Electrolyte solvent dehydration

[0099] Add 5 parts of 3A type molecular sieves to 100 parts of sulfolane, place at 25°C for 60 hours, after drying, filter out the molecular sieves to obtain dehydrated propylene carbonate.

[0100] (3) Preparation of electrolyte

[0101] 80 parts of dehydrated sulfolane, 19 parts of methyltriethylammonium tetrafluoroborate (A1) and 1 part of dimethyldiethylammonium tetrafluoroborate (B3) were uniformly mixed and dissolved at 25°C to obtain the electrolyte solution of the present invention ( 3). The water content of the electrolytic solution (3) was 37 ppm.

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Abstract

The invention provides an electrolyte solution and an electrochemical component using the same. The electrolyte solution of the invention comprises a main electrolyte (A), an auxiliary electrolyte (B) and a non-aqueous solvent (C). In the electrolyte solution of the invention, the content of the auxiliary electrolyte (B) (wt%) accounts for 0.1 to 20 (wt%) of the total mass of the electrolytes. Since the electrolyte solution of the invention is compounded by the main electrolyte (A) and the auxiliary electrolyte (B), and therefore, the electrolyte solution has the advantages of high electrical conductivity, high electrostatic capacitance and excellent long-term reliability. Through using the electrolyte solution of the invention, an electrochemical component with high energy density and excellent charge-discharge cycle characteristic can be obtained.

Description

technical field [0001] The present invention relates to an electrolytic solution, more specifically, the present invention relates to an electrolytic solution suitable for electrochemical elements. Background technique [0002] An electrochemical element is a device that stores electrochemical energy inside the element. Specifically, it refers to a battery that converts the chemical energy stored inside the element into electrical energy and outputs it to the outside, and converts the electrostatic energy stored inside the element into electrical energy output. to external capacitors, secondary batteries, and dye-sensitized solar cells. [0003] Compared with secondary batteries, supercapacitors have the characteristics of high current charge and discharge, excellent cycle performance, no heavy metal environmental pollution, and low raw material cost. They are currently recognized as energy-saving and environmentally friendly "green power sources". These characteristics ena...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/62H01G9/035H01M10/0568
CPCY02E60/10
Inventor 关士友王丽侠施苏萍熊鲲郭军袁翔云李建中
Owner JIANGSU GUOTAI SUPER POWER NEW MATERIALS
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