Gel electrolyte precursor and its application in the preparation of quasi-solid supercapacitors

A gel electrolyte and precursor technology, which is used in the field of safe gel electrolyte precursors and the preparation of quasi-solid supercapacitors, can solve the problem of the deterioration of high-current charge-discharge performance and low-temperature charge-discharge performance, and the inability of supercapacitors to be very good. In order to improve the long-term stability, good application prospects, and excellent cycle characteristics

Active Publication Date: 2021-10-12
锦州凯美能源有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, supercapacitors using gel electrolytes also have their disadvantages: the electrolyte cannot fully wet the active material of the pole piece, and the conductivity of its own electrolyte is worse than that of the liquid electrolyte, so that the ions cannot be fully free between the positive electrode and the negative electrode. Migration affects the rapid formation of the electric double layer, thereby reducing the capacity, and the high-current charge-discharge performance and low-temperature charge-discharge performance will also be deteriorated, which cannot meet the application requirements
Although the gel electrolyte prepared by these methods can better realize the gelation of the electrolyte, they are all worse than the liquid electrolyte, and the performance of the supercapacitor using the corresponding gel electrolyte still cannot well achieve the design goal. Cannot fully meet the application requirements

Method used

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  • Gel electrolyte precursor and its application in the preparation of quasi-solid supercapacitors
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  • Gel electrolyte precursor and its application in the preparation of quasi-solid supercapacitors

Examples

Experimental program
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Effect test

reference example 1

[0038] At room temperature, diethylene glycol diamine (51 g, 0.5 mol) and triethylamine (121 g, 1.2 mol) were added to 1200 ml of toluene, and then 2- Methacryloyl chloride (117 g, 1.1 mol). After the addition, it was reacted at room temperature for 5 hours. Filtrate, collect the filtrate, concentrate to remove toluene, and separate and purify by flash column chromatography to obtain the following bifunctional methacrylamide with a yield of 95%.

[0039]

[0040] Molecular weight data measured by mass spectrometry: MS (ESI) m / z: 241 [M+H] + .

[0041] Through nuclear magnetic resonance spectrum analysis, the measured hydrogen spectrum data: 1 H NMR (CDCl 3,400MHz)δ:8.2(s,2H),6.01(m,2H),5.47(m,2H),3.46(t,J=5.2Hz,4H),2.85(t,J=5.1Hz,4H), 1.88(s,6H).

reference example 2

[0043] At room temperature, triethylene glycol diamine (29.2 g, 0.2 mol) and triethylamine (51 g, 0.5 mol) were added to 500 ml of toluene, and then 2 - Methacryloyl chloride (42 g, 0.41 mol). After the addition, it was reacted at room temperature for 8 hours. Filtrate, collect the filtrate, concentrate to remove toluene, and separate and purify by flash column chromatography to obtain the following bifunctional methacrylamide with a yield of 92%.

[0044]

[0045] The molecular weight measured by mass spectrometry is: MS (ESI) m / z: 285 [M+H] + .

[0046] Through nuclear magnetic resonance spectrum analysis, the measured hydrogen spectrum data: 1 H NMR (CDCl 3 ,400MHz)δ:8.2(s,2H),6.01(m,2H),5.47(m,2H),3.55-3.59(m,4H),3.46(t,J=5.2Hz,4H),2.85(t ,J=5.1Hz,4H),1.87(s,6H).

reference example 3

[0048] At room temperature, pentaethylene glycol diamine (70.2 g, 0.3 mol) and triethylamine (71 g, 0.7 mol) were added to 1000 ml of toluene, and then 2 - Methacryloyl chloride (65 g, 0.61 mol). After the addition, it was reacted at room temperature for 10 hours. Filtrate, collect the filtrate, concentrate to remove toluene, and separate and purify by flash column chromatography to obtain the following bifunctional methacrylamide with a yield of 90%.

[0049]

[0050] The molecular weight measured by mass spectrometry is: MS (ESI) m / z: 373 [M+H] + .

[0051] Through nuclear magnetic resonance spectrum analysis, the measured hydrogen spectrum data: 1 H NMR (CDCl 3 ,400MHz)δ:8.2(s,2H),6.03(m,2H),5.48(m,2H),3.53-3.64(m,12H),3.45(t,J=5.2Hz,4H),2.83(t ,J=5.1Hz,4H),1.84(s,6H).

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Abstract

The invention belongs to the field of supercapacitor preparation, and in particular relates to a safe gel electrolyte precursor and its application in the preparation of quasi-solid supercapacitors. The safe gel electrolyte precursor includes a gel factor, an electrolyte salt and an electrolyte solvent; The gel factor includes a gel monomer and an initiator; the gel monomer accounts for 1-35% by weight of the safe gel electrolyte; the initiator accounts for 0.001-35% by weight of the safe gel electrolyte. 8%. The quasi-solid supercapacitor of the present invention has low internal resistance, high electrostatic capacity, and excellent cycle characteristics, and can effectively avoid electrolyte leakage, volatilization, flatulence and adverse consequences caused thereby.

Description

technical field [0001] The invention belongs to the field of supercapacitor preparation, in particular to a safe gel electrolyte precursor and its application in the preparation of quasi-solid supercapacitors. Background technique [0002] Supercapacitor (electric double layer capacitor) is a high-energy electric energy storage device developed in recent years. It has the advantages of high power density, high cycle life, fast charging and discharging, and no pollution to the environment. It is widely used in motor regulators. , Sensors, back-up power supplies for microcomputer memory, starting devices for motor vehicles, new energy vehicles, urban rail transit systems, smart grid systems, and clean energy systems such as wind power generation and solar power generation systems, thus attracting attention. [0003] With the rapid development of the field of energy storage, higher requirements are put forward for supercapacitors: higher energy density, higher power density and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G11/56H01G11/84C08F122/38C08F222/38
CPCC08F122/38C08F222/38H01G11/56H01G11/84Y02E60/13
Inventor 李文生王道林金振兴高飞刘璐常亮塔娜
Owner 锦州凯美能源有限公司
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