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Preparation method and application of cellulose proton type ionic liquid composite gel electrolyte

A technology of ionic liquid and composite gel, which is applied in the direction of hybrid capacitor electrolyte, etc., can solve the problems of expensive ionic liquid and limited large-scale application, and achieve the effect of excellent energy storage performance, low cost, and wide electrochemical window

Active Publication Date: 2022-03-08
GUIZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For bio-based ion gel electrolytes, ion gel electrolytes are usually prepared based on ionic liquids dissolving cellulose, but ionic liquids are usually expensive, which limits their large-scale application.

Method used

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  • Preparation method and application of cellulose proton type ionic liquid composite gel electrolyte
  • Preparation method and application of cellulose proton type ionic liquid composite gel electrolyte
  • Preparation method and application of cellulose proton type ionic liquid composite gel electrolyte

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] (1) Fill 0.8g of cotton pulp cellulose, 1.732g of tetramethylguanidine (the ratio of the number of moles of tetramethylguanidine to the number of hydroxyl groups in cellulose is 1:1), and 23g of DMSO in a reaction kettle filled with 0.4Mpa CO 2 , and reacted for 3 hours under heating in an oil bath at 50°C, accompanied by magnetic stirring, to prepare a 3% cellulose solution.

[0048] (2) Pour it into a two-necked bottle, add succinic anhydride (the molar ratio to cellulose glucose unit is 1:1), stir and react at 80°C for 3h, then add PVA (the mass ratio of PVA to cellulose is 1 : 1) Stir to dissolve completely, then add epichlorohydrin dropwise (the molar ratio to cellulose glucose unit is 1:1), then pour into a mold and react at 60°C for 6h to obtain a gel.

Embodiment 2

[0050] (1) Fill 0.9g of cotton pulp cellulose, 1.938g of tetramethylguanidine (the ratio of the number of moles of tetramethylguanidine to the number of hydroxyl groups in the cellulose is 1:1), 18.922g of DMSO and fill the reaction kettle with 0.6 Mpa CO 2 , reacted for 3 h under heating in an oil bath at 50° C., accompanied by magnetic stirring, to prepare a 4% cellulose solution.

[0051] (2) Pour it into a two-necked bottle, add succinic anhydride (the molar ratio to cellulose glucose unit is 1:1), stir and react at 60°C for 3h, then add PVA (the mass ratio of PVA to cellulose is 2 : 1) Stir to dissolve completely, then add epichlorohydrin dropwise (the molar ratio to cellulose glucose unit is 1:1), then pour into a mold and react at 80°C for 2 hours to obtain a gel.

Embodiment 3

[0053] (1) Fill 0.9g of cotton pulp cellulose, 1.938g of tetramethylguanidine (the ratio of the number of moles of tetramethylguanidine to the number of hydroxyl groups in the cellulose is 1:1), 18.922g of DMSO and fill the reaction kettle with 0.6 Mpa CO 2 , reacted for 3 h under heating in an oil bath at 50° C., accompanied by magnetic stirring, to prepare a 4% cellulose solution.

[0054] (2) Pour it into a two-necked bottle, add succinic anhydride (the molar ratio to the cellulose glucose unit is 1:1), stir and react at 60°C for 3 hours, and then add PVA (the mass ratio of PVA to cellulose is 0 : 1) Stir to dissolve completely, then add epichlorohydrin dropwise (the molar ratio to cellulose glucose unit is 1:1), then pour into a mold and react at 80°C for 2 hours to obtain a gel.

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Abstract

The invention discloses a preparation method and application of a cellulose proton type ionic liquid composite gel electrolyte, which is to dissolve cellulose in CO 2 / organic solvent / organic base dissolved in the system, then add the compound containing the acid anhydride functional group for derivatization reaction, then add the organic synthetic polymer and crosslinking agent in turn, stir evenly and carry out the crosslinking reaction, and the fiber is obtained after the reaction element complex ion gel electrolyte. The invention has the characteristics of green and environment-friendly preparation process and low cost, and the prepared proton ion gel electrolyte has high ion conductivity at room temperature, wide electrochemical window and excellent energy storage performance.

Description

technical field [0001] The invention relates to a preparation method, electrolyte and application of an electrolyte, in particular to a preparation method, electrolyte and application of a cellulose proton type ionic liquid composite gel electrolyte. Background technique [0002] With the rapid development of electronic technology, various electronic products such as computers, mobile phones, electric vehicles and some wearable electronic devices have become an indispensable part of people's daily life. Therefore, people pay more attention to the performance of these electronic products. Practical applications of wearable electronics require softness, high reliability, and high toughness. Supercapacitors benefit from high power density and long cycle life, and flexible supercapacitors have been developed in large numbers for wearable electronic devices. Whether it is a supercapacitor or a lithium-ion battery, the electrolyte is an important component of an electrochemical e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G11/56
CPCH01G11/56
Inventor 徐芹芹朱安泰谢海波
Owner GUIZHOU UNIV