Unlock instant, AI-driven research and patent intelligence for your innovation.

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

An ionic liquid and composite gel technology, applied in the direction of hybrid capacitor electrolytes, etc., can solve the problems of limiting large-scale application and expensive ionic liquids

Active Publication Date: 2021-05-18
GUIZHOU UNIV
View PDF3 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • 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.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a preparation method and application of a cellulose proton type ionic liquid composite gel electrolyte. The method comprises the following steps of dissolving cellulose in a CO2 / organic solvent / organic alkali dissolution system, then adding a compound containing an anhydride functional group to carry out derivatization reaction, then sequentially adding an organic synthetic high-molecular polymer and a cross-linking agent, and uniformly stirring, and carrying out a cross-linking reaction to obtain the cellulose composite ionic gel electrolyte after the reaction is finished. The preparation method has the characteristics that the preparation process is green and environment-friendly, the cost is low, and the prepared proton type ionic gel electrolyte has relatively higher ionic conductivity, relatively wider electrochemical window and excellent energy storage performance at room temperature.

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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/56
CPCH01G11/56
Inventor 徐芹芹朱安泰谢海波
Owner GUIZHOU UNIV