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Room-temperature molten salt electrolyte materials

A technology of electrolyte material and low-temperature molten salt, which is applied in the direction of electrolytic capacitors, circuits, capacitors, etc., can solve the problems of reduced symmetry, and achieve the effects of good thermal stability, wide liquid range, and low corrosion

Inactive Publication Date: 2005-02-23
国家高技术绿色材料发展中心
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The symmetry of such molecular structures is further reduced due to the introduction of heteroatoms with different electronegativity

Method used

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  • Room-temperature molten salt electrolyte materials
  • Room-temperature molten salt electrolyte materials
  • Room-temperature molten salt electrolyte materials

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] 1,3-Noxacyclopent-2-one and LiN(CF 3 SO 2 ) 2 After drying, put it into the glove box (the content of water is less than 1ppm), weigh 10g1,3-azoxacyclopentan-2-one and 10g LiN(CF 3 SO 2 ) 2In a weighing bottle, it becomes a transparent liquid immediately after stirring at room temperature, forming a molten salt at room temperature. Its thermal properties were measured with a DSC2010 (TA company, USA) differential scanning calorimeter, and its melting point was -60°C.

[0037] Put the sample into the platinum bright conductivity electrode (Russell, Shanghai), use the CHI 660A (Chenhua, Shanghai) electrochemical workstation to measure its conductivity in the range of 1Hz-100KHz by the AC impedance method, and its room temperature (25°C ) with a conductivity of 1.2mS / cm; combined with WD4005(F) high and low temperature box (Yinhe, Chongqing) to measure the conductivity of the sample at different temperatures, the relationship between the conductivity and temperature v...

Embodiment 2

[0039] 1,3-Noxacyclopent-2-one and LiClO 4 After drying, put it into the glove box (the content of water is less than 1ppm), weigh 15g1,3-azoxane-2-one and 10g LiClO 4 In a weighing bottle, it turns into a transparent liquid after stirring at room temperature, forming a molten salt at room temperature. Its thermal properties were measured with a DSC2010 (TA Company, USA) differential scanning calorimeter, and its melting point was -50°C.

[0040] Put the sample into the platinum bright conductivity electrode (Russell, Shanghai), use the CHI 660A (Chenhua, Shanghai) electrochemical workstation to measure its conductivity in the range of 1Hz-100KHz by the AC impedance method, and its room temperature (25°C ) with a conductivity of 2.05mS / cm; combined with a WD4005(F) high and low temperature box (Yinhe, Chongqing) to measure the conductivity of the sample at different temperatures, the relationship between the conductivity and temperature variation curves conforms to the Arrhen...

Embodiment 3

[0042] 1,3-Noxacyclopent-2-one and LiAlCl 4 Put into the glove box (the content of water is less than 1ppm), weigh 10g1,3-nitroxycyclopent-2-one and 10 grams of LiAlCl 4 In a weighing bottle, it will turn into a transparent liquid immediately after being fully stirred at room temperature, forming a molten salt at room temperature. The system is stable and remains in a stable liquid state after being left in the glove box for a long time.

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Abstract

The electrolyte material is constructed by the neutral molecular compound. 1,3-nitrogen oxygen sulfur cyclopentane (cyclohexanone) and conducting salt, the organic dissolvant is also added. The advantage of the invention is: simple to produce, easy to purify, low price, and good heat-stability , the broad electro-chemical window and high conducting property of the ion, which is effectively applied on the lithium ion battery, electro-chemical super capacitor fuel battery, etc.

Description

technical field [0001] The invention belongs to the technical field of room temperature molten salt (also known as ionic liquid), and is mainly oriented to applications in the technical fields of high-energy batteries such as lithium ion batteries, electrochemical supercapacitors, fuel cells, and photovoltaic cells, and electronic equipment, and can also be used in catalytic chemistry and organic synthesis. etc. have been effectively applied. technical background [0002] Room temperature molten salt electrolytes belong to the category of room temperature ionic liquids, and this field is developing rapidly. Compared with traditional organic electrolytic solvents such as EC and PC, room temperature ionic liquids have the advantages of low vapor pressure, non-volatile, non-flammable, environmentally friendly, stable chemical and electrochemical properties, and wide electrochemical window. [0003] At present, most of the room temperature molten salt electrolytes in patents ar...

Claims

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Application Information

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IPC IPC(8): H01B1/12H01G9/035H01G9/20H01M8/02H01M10/40
CPCY02E60/122Y02E60/13Y02E60/50
Inventor 栾和林吴锋陈人杰陈实杨汉西吴萌
Owner 国家高技术绿色材料发展中心
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