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High-conductivity fluorine-contained polyion liquid diaphragm material and preparation method thereof

A technology of polyionic liquid and diaphragm material, which is applied in the direction of organic diaphragm, chemical instruments and methods, circuits, etc., and can solve the problem of easy loss of ionic liquid components

Active Publication Date: 2011-01-12
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these ion-exchange membranes based on small-molecule ionic liquid composites have high ion conductivity independent of water, but their ionic liquid components are still easy to lose during use.

Method used

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  • High-conductivity fluorine-contained polyion liquid diaphragm material and preparation method thereof
  • High-conductivity fluorine-contained polyion liquid diaphragm material and preparation method thereof
  • High-conductivity fluorine-contained polyion liquid diaphragm material and preparation method thereof

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Embodiment 1

[0063] Example 1: Raw material: iodine-terminated fluorine-containing alkyl ether group sulfonyl fluoride ICF 2 CF 2 OCF 2 CF 2 SO 2 f

[0064] (1) Synthesis of sodium salt (ICF 2 CF 2 OCF 2 CF 2 SO 2 NHNa):

[0065] Under the protection of nitrogen, add liquid ammonia to the three-necked flask, cool to -80°C, and slowly drop an appropriate amount of compound ICF 2 CF 2 OCF 2 CF 2 SO 2 F, after the excessive ammonia gas is completely volatilized, the compound ICF is obtained 2 CF 2 OCF 2 CF2 SO 2 NH 2 , adding an appropriate amount of sodium hydroxide, filtering to remove the NaF precipitate, evaporating the solution to remove the solvent, and further vacuum drying to obtain the compound ICF 2 CF 2 OCF 2 CF 2 SO 2 NHNa;

[0066] (2) The sodium salt of fluoroalkyl ether group sulfonyl ammonium (NaO 2 SCF 2 CF 2 OCF 2 CF 2 SO 2 NHNa):

[0067] Under nitrogen atmosphere at 0°C, add an appropriate amount of ICF to the two-necked flask 2 CF 2 OCF 2...

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Abstract

The invention discloses a high-conductivity fluorine-contained polyion liquid diaphragm material and a preparation method thereof. The high-conductivity fluorine-contained polyion liquid diaphragm material comprises a cation and a fluorine-contained anion, wherein the cation is hydrogen ion or at least one of metal ions and a compound cation formed by combining organic molecules, and the fluorine-contained anion is poly fluorine-contained anion connected by a macromolecule main chain. Compared with the prior art, the high-conductivity fluorine-contained polyion liquid diaphragm material of the invention has the advantages of small possibility of ionic liquid draining, independence from water for electrical conductivity, prevention from being penetrated by OH<-> anion, carbinol or vanadium ion and the like. In addition, the high-conductivity fluorine-contained polyion liquid diaphragm material can form a stable lamellar or tubular ion path which has strong ion activity, high chemical stability and low ion activation energy and is easy to adsorb organic polar solvent. The material is an ideal diaphragm material capable of being applied in lithium ion batteries, secondary lithium ion batteries, methanol fuel batteries, liquid flow batteries, electrodialysis water treatment, nuclear industry and analysis, catalyst synthesis, chlorine industry and the like.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a highly conductive fluorine-containing polyionic liquid diaphragm material and a preparation method thereof, which can be applied to lithium-ion batteries, secondary lithium-ion batteries, methanol fuel cells, and liquid flow batteries , electrodialysis water treatment, atomic energy industry and analysis, catalytic synthesis and chlor-alkali industry and other fields. Background technique [0002] Since entering the 21st century, energy issues have increasingly become the core issue restricting the sustainable development of mankind. In order to solve the energy crisis and achieve rapid economic growth and sustainable social development, new energy and new green environmental protection materials have gradually attracted the attention of governments of various countries, and thus received strong support and development. The battery industry, especially the battery in...

Claims

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Application Information

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IPC IPC(8): C08G75/30C08J5/22C08L81/10H01M2/16C25B1/46C25B13/08B01D71/66H01M50/409
CPCY02E60/10
Inventor 薛立新陶慷严庆
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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