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POSS-containing high temperature-resistant solid ionic liquid and preparation method thereof

An ionic liquid and high-temperature-resistant technology, which is applied in the direction of silicon organic compounds, electrochemical generators, electrical components, etc., can solve the problems of high-temperature resistance, low-temperature rheology, and unsatisfactory reaction kinetics, etc., and achieve high yield , good stability and compact process

Inactive Publication Date: 2016-10-12
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, its high temperature resistance, low temperature rheology and reaction kinetics are not ideal enough. How to better play the comprehensive performance of POSS and develop its application fields has become a technical problem to be solved urgently.

Method used

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  • POSS-containing high temperature-resistant solid ionic liquid and preparation method thereof
  • POSS-containing high temperature-resistant solid ionic liquid and preparation method thereof
  • POSS-containing high temperature-resistant solid ionic liquid and preparation method thereof

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Embodiment 1

[0028] In the present embodiment, a method for preparing a POSS-containing high-temperature resistant solid-state ionic liquid, the specific steps are as follows:

[0029] (1) Preparation of 1-hexyl-3-methylimidazole hydroxide:

[0030] With 1-hexyl-3-methylimidazole bromide as raw material, its chemical formula is: in n=5, add 1-hexyl-3-methylimidazole bromide to a strongly basic anion exchange resin column moistened with deionized water to prepare an aqueous solution of 1-hexyl-3-methylimidazole hydroxide, and oxidize the obtained The 1-hexyl-3-methylimidazole aqueous solution is removed by vacuum freeze-drying to remove the deionized water, and the compound obtained is 1-hexyl-3-methylimidazole hydroxide, and its chemical formula is:

[0031] (2) Preparation of carboxylated POSS:

[0032] Adopt aminopropyl heptaisobutyl POSS, its chemical formula is: in Adopt aminopropyl heptaisobutyl POSS and succinic anhydride as raw materials, according to aminopropyl heptaiso...

Embodiment 2

[0038] This embodiment is basically the same as the embodiment, and the special features are:

[0039] In the present embodiment, a method for preparing a POSS-containing high-temperature resistant solid-state ionic liquid, the specific steps are as follows:

[0040] (1) Preparation of 1-pentyl-3-methylimidazole hydroxide:

[0041] With 1-pentyl-3-methylimidazole bromide as raw material, its chemical formula is: in n=4, 1-pentyl-3-methylimidazole bromide is added to a strongly basic anion exchange resin column moistened with deionized water to prepare an aqueous solution of 1-pentyl-3-methylimidazole hydroxide, and the obtained The 1-pentyl-3-methylimidazole hydroxide aqueous solution is removed by vacuum freeze-drying to remove the deionized water, and the compound obtained is 1-pentyl-3-methylimidazole hydroxide, and its chemical formula is:

[0042] (2) Preparation of carboxylated POSS: this step is the same as Example 1;

[0043] (3) Preparation of POSS-based ionic...

Embodiment 3

[0047] This embodiment is basically the same as the previous embodiment, and the special features are:

[0048] In the present embodiment, a method for preparing a POSS-containing high-temperature resistant solid-state ionic liquid, the specific steps are as follows:

[0049] (1) Preparation of 1-butyl-3-methylimidazole hydroxide:

[0050] With 1-butyl-3-methylimidazole bromide as raw material, its chemical formula is: in n=3, 1-butyl-3-methylimidazole bromide is added to the strongly basic anion exchange resin column moistened with deionized water to prepare 1-butyl-3-methylimidazole hydroxide aqueous solution, and the obtained The 1-butyl-3-methylimidazole hydroxide aqueous solution is removed by vacuum freeze-drying to remove the deionized water, and the compound obtained is 1-butyl-3-methylimidazole hydroxide, and its chemical formula is:

[0051] (2) Preparation of carboxylated POSS: this step is the same as Example 1;

[0052] (3) Preparation of POSS-based ionic ...

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Abstract

The invention discloses a POSS-containing high temperature-resistant solid ionic liquid which is prepared by a reaction of carboxyl heptaisobutyl POSS and 1-Cn-3-methylimidazole hydroxide, wherein the carboxyl heptaisobutyl POSS is prepared from aminopropyl heptaisobutyl POSS and succinic anhydride, and the 1-Cn-3-methylimidazole hydroxide is prepared from brominated 1-Cn-3-methylimidazole through the exchange of strongly basic anion exchange resin. A preparation method of the ionic liquid, disclosed by the invention has the advantages of high yield, high purity, good stability, compact process, low cost, short reaction time and capability of realizing large-scale industrial production. The ionic liquid disclosed by the invention is a series of POSS-based high temperature-resistant solid ionic liquid with a melting point ranging from 160 DEG C to 180 DEG C, and can be used for the field of solid electrolyte.

Description

technical field [0001] The invention relates to an ionic liquid and a preparation method thereof, in particular to a POSS modified ionic liquid and a preparation method thereof, which is applied in the technical field of POSS modified materials. Background technique [0002] Ionic liquids are ionic compounds composed of positive and negative ions with a melting point lower than 100 °C. Due to their good ionic conductivity and wide electrochemical window, they are widely used in the research of electrolytes. With the development of portable and wearable electronic products, the electrolytes of batteries and supercapacitors also need to be flexible. Therefore, solid electrolytes composed of solid ionic liquids doped with lithium salts have become a research hotspot. POSS contains a cage structure composed of -Si-O-Si-, which has good thermal stability. However, its high temperature resistance, low temperature rheology and reaction kinetics are not ideal enough. How to better ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F7/21C07D233/58H01M10/0564
CPCC07D233/58C07F7/21H01M10/0564Y02E60/10
Inventor 付继芳尚大鹏陆琦宗培松殷金涛陈立亚余文琪
Owner SHANGHAI UNIV