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Topological structure liquid crystal polymer electrolyte, and synthetic method and application thereof

A technology of liquid crystal polymer and topological structure, applied in the field of polymer electrolyte and its synthesis, and the field of topological structure liquid crystal polymer electrolyte and its synthesis, can solve problems such as low ionic conductivity, and achieve good film-forming property and excellent electrochemical performance. , the effect of good ionic conductivity

Active Publication Date: 2017-11-10
UNIVERSITY OF CHINESE ACADEMY OF SCIENCES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the optimal ionic conductivity they reported exists only in the orientation direction of this linear copolymerized liquid crystal, and the ionic conductivity is lower in the direction perpendicular to the orientation of the liquid crystal.
In addition, they seldom assemble the materials into batteries to test the actual electrochemical performance, and whether this type of SPE can be practically applied is still a problem

Method used

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  • Topological structure liquid crystal polymer electrolyte, and synthetic method and application thereof
  • Topological structure liquid crystal polymer electrolyte, and synthetic method and application thereof
  • Topological structure liquid crystal polymer electrolyte, and synthetic method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0071] After the dry three-necked round-bottomed flask with condenser tube, dropping funnel and nitrogen gas conduit was purged with nitrogen to remove oxygen, under nitrogen flow, 0.3g trimethylolpropane and 20ml toluene were added to the three-necked round-bottomed flask, and stirred for 1h Finally, evaporate toluene; after cooling to room temperature, add 3ml of methanol solution of potassium methoxide with a concentration of 0.31mol / L, stir for 30min, evaporate methanol, raise the temperature to 110°C, slowly add 6ml of glycidol within 9h, dropwise After continuing the reaction for 12 hours, the product was dried under vacuum, and the obtained polymer was a colorless viscous liquid, which was HPG.

[0072] Add 0.4g of HPG, two drops of stannous octoate and 5ml of caprolactone into a dry round bottom flask, freeze in liquid nitrogen, repeatedly evacuate and blow nitrogen (three times), react at 125°C for 17h to obtain HPG-PCL. In another dry round bottom flask, add 5g of HP...

Embodiment 2

[0076] Add 0.6g of polyphosphoester (PHEEP), two drops of stannous octoate and 5ml of trimethylene carbonate (TMC) into a dry round bottom flask, freeze in liquid nitrogen, repeatedly evacuate and ventilate nitrogen (three times), and react at 130°C 18h to get PHEEP-PTMC. Add 5g of HPHEEP-PTMC, 50ml of anhydrous tetrahydrofuran (THF) and 3ml of anhydrous triethylamine into a dry round-bottomed flask, freeze in liquid nitrogen, repeatedly evacuate and ventilate nitrogen (three times), slowly add diisobutylacyl bromide 3.8 ml, reacted at 0°C for 2h, reacted at room temperature for 72h, filtered to remove salt, rotary evaporated to remove THF, and precipitated with ice methanol to obtain HPG-PTMC-Br.

[0077] Add 0.5g PHEEP-PTMC-Br, 3.4g mesogen (the structure of the monomer is ) and 15ml of toluene, mixed well, frozen in liquid nitrogen, repeatedly vacuumed nitrogen (three times), and finally added quantitative 0.223g cuprous bromide and 0.34ml N, N, N', N', N" -Pentamethyldi...

Embodiment 3

[0080] Add 0.209g CuCl and 0.658g bipyridine (bdy) in sequence to a 100ml two-necked bottle, vacuumize and blow nitrogen three times, inject 8ml chlorobenzene, 2.5ml styrene and 3ml p-chloromethylstyrene, react at 120°C for 2h The reaction was terminated by bubbling air. Using tetrahydrofuran as eluent, passing through a neutral alumina column, rotary evaporation, and precipitation in methanol to obtain the HBPS product.

[0081] Add 0.5g of HBPS into a dry round-bottomed flask, add 1g of polyethylene glycol acrylate (PEGMA) and 15ml of toluene, mix thoroughly, freeze in liquid nitrogen, repeatedly evacuate and ventilate nitrogen (three times), and finally add 0.418g Cuprous chloride and 1.3g bdy were reacted at 100°C for 9h, passed through a neutral alumina column with air, and the solvent was removed by rotary evaporation, and HBPS-PPEGMA was obtained by precipitation in ether. On this basis, add 0.5g mesogen (the structure of the monomer is ) and 20ml of toluene, mixed wel...

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Abstract

The invention discloses a topological structure liquid crystal polymer electrolyte, and a synthetic method and an application thereof. The electrolyte is composed of hyperbranched / star polymer and liquid crystal elements, with a topological structure as follows: FORMULA. The topological structure liquid crystal polymer electrolyte provided by the invention has the advantages that the electrolyte has good film-forming property, and can form solid polymer electrolyte after being compounded with lithium salt, and the solid polymer electrolyte has good ionic conductivity, excellent electrochemical performance and rate performance.

Description

technical field [0001] The invention relates to a polymer electrolyte and its synthesis method and application, in particular to a topological liquid crystal polymer electrolyte and its synthesis method and application, belonging to the technical field of polymer electrolytes. Background technique [0002] In recent years, a new round of scientific and technological revolution and industrial revolution represented by emerging energy technologies has been developing and growing, and new energy technology achievements are also emerging. In order to meet the application requirements in different fields, various energy storage technologies, such as flow batteries, lithium-sulfur batteries, lithium-air batteries, supercapacitors, and lithium-ion batteries (LIBs), have been developed rapidly. Among them, LIBs have attracted people's attention due to their high energy density and portability. Since 1991, lithium-ion batteries entered the market, and since then its application in e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/0565H01M10/0525
CPCH01M10/0525H01M10/0565H01M2220/20H01M2220/30H01M2300/0082Y02E60/10
Inventor 张辽云王师王蔼廉刘旭许浩周倩陈杰
Owner UNIVERSITY OF CHINESE ACADEMY OF SCIENCES
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