Polymer ion liquid electrolyte and preparation method thereof

A technology of ionic liquid and composite electrolyte, which is applied in the field of polymer ionic liquid electrolyte and its preparation, can solve the problems that the electrolyte has not been reported, and achieve the effect of improving solubility, good thermal stability, and high lithium ion migration number

Inactive Publication Date: 2014-09-10
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] So far, based on this fluorine-containing sulfonyl (FSO 2 -) Imine novel anion and cationic side chain containing ether groups in the polymer ionic liquid electrolyte has not been reported

Method used

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  • Polymer ion liquid electrolyte and preparation method thereof
  • Polymer ion liquid electrolyte and preparation method thereof
  • Polymer ion liquid electrolyte and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-5

[0048] Embodiment 1-5 is the preparation of ionic liquid polymer monomer

Embodiment 1

[0049] Example 1: Preparation of 1-vinyl-3-methoxyethyl-imidazole bis(fluorosulfonyl)imide salt (Vy-IM for short 102 FSI)

[0050] Add 10.0g (0.110mol) of vinylimidazole and 20mL of acetone into a 50mL three-necked flask, add dropwise 23.7g (0.127mol) of iodoethyl methyl ether under stirring in an ice bath, stir for half an hour, then stir at room temperature for 12h, the reaction is completed, and the rotary evaporation Remove the low-boiling solvent, wash twice with ether, and dry in vacuum at 40°C for 12 hours to obtain 24.6 g (0.088 mol) of 1-vinyl-3-methoxyethyl-imidazolium iodide salt.

[0051] Dissolve 10.0 g (0.036 mol) of 1-vinyl-3-methoxyethyl-imidazolium iodide salt prepared above in 20 mL of deionized water, add 7.9 g (0.036 mol) of KFSI and 20 mL of CH 2 Cl 2 , stirred and reacted for 4h, stood to separate the water phase, and washed the organic phase with deionized water until 5% AgNO 3 There was no precipitation in the aqueous solution, and the low-boiling so...

Embodiment 2

[0053] Example 2: Preparation of 2-(methacryloyloxy)-N-(2-methoxyethyl)-N,N-dimethylethyl quaternary ammonium bis(fluorosulfonyl)imide

[0054] Add 10.0g (0.064mol) dimethylaminoethyl methacrylate (DMAEMA) and 20mL acetone to a 50mL three-necked flask, add 13.0g (0.070mol) iodoethyl methyl ether dropwise under stirring in an ice bath, stir for half an hour, then room temperature Stir for 12 hours, the reaction is complete, remove the low-boiling point solvent by rotary evaporation, wash twice with ether, and dry in vacuum at 40°C for 12 hours to obtain 2-(methacryloyloxy)-N-(2-methoxyethyl )-N, N-dimethylethyl quaternary ammonium iodide salt 17.5g (0.051mol).

[0055] Dissolve 10.0 g (0.029 mol) of 1-vinyl-3-methoxyethyl-imidazolium iodide salt prepared above in 20 mL of deionized water, and add 6.4 g (0.029 mol) of potassium bis(fluorosulfonyl)imide and 20mL CH 2 Cl 2 , stirred and reacted for 4h, stood to separate the water phase, and washed the organic phase with deioniz...

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Abstract

The invention discloses an ether group-containing polymer ion liquid composite-electrolyte and a preparation method thereof. The polymer ion liquid composite-electrolyte has the advantages of high room-temperature conductivity, high lithium ion transport number, low vitrification point, good mechanical strength, good film forming performances, wide electrochemical window and good heat stability, and has wide application values in fields of lithium (ion) cells, carbon-based supercapacitors and solar cells.

Description

technical field [0001] The invention belongs to the technical field of organic polymer functional materials and electrochemistry, and in particular relates to a polymer ionic liquid electrolyte and a preparation method thereof. Background technique [0002] Non-aqueous electrolyte is one of the key materials of high specific energy secondary lithium (ion) batteries. At present, commercialized lithium ion secondary battery electrolytes mainly use organic carbonates (such as diethyl carbonate, ethylene carbonate, etc.), conductive Salt (mainly LiPF 6 ), and a liquid electrolyte system composed of necessary functional additives. Organic liquid electrolytes have disadvantages such as solvent leakage, volatilization, and flammability, which make the battery prone to safety accidents such as combustion or explosion when improperly used (such as overcharge, short circuit, etc.). [0003] Compared with non-aqueous organic liquid electrolytes, solid polymer electrolytes (Solid Poly...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F126/06C08F120/38C08F112/14C08J5/18C08L39/04C08L33/16C08L25/18H01M10/056
CPCY02E60/10
Inventor 聂进张恒周志彬
Owner HUAZHONG UNIV OF SCI & TECH
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