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Preparation process, electrolyte and electrochemical element of electrolytic salt

An electrolyte salt and electrolyte technology, applied in electrical components, electrolytic capacitors, circuits, etc., can solve the problems of high working voltage, large internal resistance, and low ionic conductivity.

Inactive Publication Date: 2012-11-21
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still problems such as low ionic conductivity, large internal resistance, low voltage resistance (<3.0V), and high cost. Electrolyte has become an effective way to improve the energy density and power density of supercapacitors, and to achieve a wide range of commercial applications in the energy field and electric vehicle power systems

Method used

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  • Preparation process, electrolyte and electrochemical element of electrolytic salt
  • Preparation process, electrolyte and electrochemical element of electrolytic salt
  • Preparation process, electrolyte and electrochemical element of electrolytic salt

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0102] (1) Synthesis of polycyclic tertiary amines

[0103] 20-40 mesh catalyst (γ-Al 2 o 3 ) 4mL, each of its two sides is filled with 1mL 20-40 mesh quartz sand, the catalyst layer and the quartz sand layer are kept at 425°C, and the alcohol compound (a=2, b=c= 1), passing through the catalyst at a speed of 2.5g / h, the obtained reaction mixture gas is dissolved in water, and separated and purified by extraction, concentration and distillation to obtain the corresponding polycyclic tertiary amine 1-azacyclo[2,2 , 2] octane, with 1 H-NMR confirmed its structure as: 1 H-NMR (CDCl 3 ): δ2.85(t, 6H), δ1.72-1.75(m, 1H), δ1.51-1.55(m, 6H).

[0104] (2) Synthesis of electrolyte salt

[0105] Mix 1-azacyclo[2,2,2]octane with dimethyl carbonate in a molar ratio (1:1.5), use methanol as a solvent, add it to a high-pressure reactor, and seal the reaction at a reaction temperature of 130°C. The reaction time was 15 hours, and the quaternary ammonium salt was obtained. The quaternar...

Embodiment 2

[0120] (1) Synthesis of polycyclic tertiary amines

[0121] 20-40 mesh catalyst (H + type molecular sieve) 4mL, each side of which is filled with 1mL 20-40 mesh quartz sand, the catalyst layer and the quartz sand layer are kept at 400°C, and the alcohol compound (a=b=c= 1), passing through the catalyst at a speed of 2.5g / h, the obtained reaction mixture gas is dissolved in water, and separated and purified by extraction, concentration and distillation to obtain the corresponding polycyclic tertiary amine 1-azacyclo[2,2 , 1] heptane, with 1 H-NMR confirmed its structure as: 1 H-NMR (D 2 O): δ2.51-2.53(ddd, 2H), δ2.34(t, 1H), δ2.41-2.443(m, 2H), δ2.19-2.20(s, 2H), δ1.38(m , 2H), δ0.94-0.95 (m, 2H).

[0122] (2) Synthesis of electrolyte salt

[0123] Dissolve 1-azacyclo[2,2,1]heptane in acetone and dissolve evenly, then slowly add iodomethane (1-azacyclo[2,2,1]heptane and iodide Methane molar ratio is 1:1), then stirred at 30°C for 3 hours. The precipitated white crystals...

Embodiment 3

[0130] (1) Synthesis of polycyclic tertiary amines

[0131] In a stainless steel tube with an inner diameter of 12mm, fill 20-40 mesh catalyst (Na + Molecular sieve) 4mL, each of its two sides is filled with 1mL 20-40 mesh quartz sand, the catalyst layer and the quartz sand layer are kept at 425°C, heated at 100°C-120°C to evaporate the alcohol compound of cyclic amine under reduced pressure (a=0, b=c =2), pass through the catalyzer at a speed of 2.5g / h, and the reaction mixture obtained is dissolved in water, and separated and purified by extraction, concentration and distillation to obtain the corresponding polycyclic tertiary amine 1-azacycle [3, 3,0]octane, with 1 H-NMR confirmed its structure as: 1 H-NMR (CDCl 3 ): δ2.95 (m, 4H), δ1.82-1.84 (m, 1H), δ1.65-1.68 (m, 4H), δ1.45-1.48 (m, 4H).

[0132] (2) Synthesis of electrolyte salt

[0133] Dissolve 1-azacyclo[3,3,0]octane in acetone, and after dissolving evenly, slowly add dimethyl sulfate (1-azacyclo[3,3,0]octane) d...

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Abstract

The invention relates to a preparation process, an electrolyte and an electrochemical element of electrolytic salt. Polycyclic tertiary amine serves as a raw material, the electrolytic salt is prepared through a quaternarization reaction, the electrolyte is composed of the electrolytic salt and a nonaqueous solvent, and the electrochemical element uses the electrolyte. The supercapacitor organic electrolyte of the electrolytic salt prepared by the preparation process can meet requirements of a supercapacitor for electrochemical and chemical stability; a series of the polycyclic tertiary amine is subjected to the simple quaternarization reaction, a series of the electrolytic salt with high purity is prepared, the process cost is low, and the target product yield is high; and the device investment is low, the operation is easy, the yield is high, the post treatment is simple and large-scale production is suitable.

Description

【Technical field】 [0001] The invention relates to the technical field of electrolyte salts, in particular to a method for preparing electrolyte salts, electrolyte solutions and electrochemical elements using electrolyte salts. 【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, and dye-sensitized solar cells, etc. [0003] Electric double layer capacitors (abbreviated as EDLCs=Electric Double Layer Capacitors) are a kind of "energy storage" device that uses the basic principle of "electric energy storage" by using the basic principle of "electric double layer" formed by the physical adsorption of electrolyte ions on the electrode surface...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G9/038H01G9/155
CPCY02E60/13
Inventor 关士友王丽侠张慧辰林芳芹赵震
Owner EAST CHINA UNIV OF SCI & TECH
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