Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A kind of biogel electrolyte composed of pan and modified plla and preparation method thereof

A biogel and electrolyte technology, applied in the field of material chemistry, can solve the problems affecting the electrochemical stability and safety of batteries, the uneven distribution of polymer membrane pores, and the low mechanical strength of polymer membranes, so as to improve the electrochemical performance , stable mechanical strength, good amorphous effect

Active Publication Date: 2022-04-08
CENT SOUTH UNIV
View PDF12 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this hydrogen bond force is weak, resulting in low mechanical strength of the prepared polymer film. Therefore, covalent bonds are formed through monomer copolymerization and cross-linking, and a chemical cross-linking network is formed in the polymer film to improve the mechanical strength of the polymer film. strength and structural stability
[0005] Existing methods for preparing polymer electrolyte membrane skeletons mainly include solution casting method, extraction activation method, phase separation / inversion method, etc. Among them, the solution casting method is to dissolve the polymer in a conventional solvent and then pour it into a specific mold. Solvent removal is difficult to ensure due to solvation of lithium salts
The extraction activation method is to add a plasticizer to the polymer solution system, and then use a solvent to extract and remove the plasticizer to obtain a polymer porous film after casting the film. The polymer film obtained by this method has uneven distribution of pores; phase separation The / inversion method avoids the extraction process of the plasticizer, and the obtained polymer gel electrolyte has good electrochemical and mechanical properties, but the residual solvent will affect the electrochemical stability and safety of the battery

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
  • A kind of biogel electrolyte composed of pan and modified plla and preparation method thereof
  • A kind of biogel electrolyte composed of pan and modified plla and preparation method thereof
  • A kind of biogel electrolyte composed of pan and modified plla and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] The invention provides a method for preparing a PAN / P (LLA-EG) bio-based gel polymer electrolyte, comprising the following steps:

[0041] (1) Press V CH3Cl2 :V DMF =0.5:1 volume ratio (total volume is 60mL) respectively measure the dichloromethane (CH 3 Cl 2 ) and N,N-dimethylformamide (DMF) solvent were added into a beaker and stirred to obtain a mixed solvent, 1g of PLLA powder was weighed and added to the mixed solvent and stirred at room temperature until completely dissolved to obtain a PLLA solution;

[0042] (2) press n EG :n PLLA The mol ratio of =2:1 measures the ethylene glycol solution of corresponding volume and adds in the PLLA solution of step (1) gained under stirring condition, obtains P (LLA-EG) mixed suspension;

[0043] (3) press m SnCl2 :m PLLA+EG =0.05:1 takes by weighing the stannous chloride of corresponding quality and adds in the P (LLA-EG) mixed suspension of step (2) gained;

[0044] (4) Transfer the P(LLA-EG) mixed suspension obtaine...

Embodiment 2

[0051] The invention provides a structural design and preparation of a PAN / P (LLA-EG) bio-based gel polymer electrolyte, comprising the following steps:

[0052] (1) Press V CH3Cl2 :V DMF = 1:1 volume ratio (total 60mL) measure the corresponding volume of dichloromethane (CH 3 Cl 2 ) and N,N-dimethylformamide (DMF) solvent were added into a beaker and stirred to obtain a mixed solvent, 1g of PLLA powder was weighed and added to the mixed solvent and stirred at room temperature until completely dissolved to obtain a PLLA solution;

[0053] (2) press n EG :n PLLA The mol ratio of=2.5:1 measures the ethylene glycol solution of corresponding volume and adds in the PLLA solution of step (1) gained under stirring condition, obtains P (LLA-EG) mixed suspension;

[0054] (3) press m SnCl2 :m PLLA+EG =0.05:1 takes by weighing the stannous chloride of corresponding quality and adds in the P (LLA-EG) mixed suspension of step (2) gained;

[0055] (4) Transfer the P(LLA-EG) mixed s...

Embodiment 3

[0061] The invention provides a structural design and preparation of a PAN / P (LLA-EG) bio-based gel polymer electrolyte, comprising the following steps:

[0062] (1) Press V CH3Cl2 :V DMF = 3:1 volume ratio (total 60mL) to measure the corresponding volume of dichloromethane (CH 3 Cl 2 ) and N,N-dimethylformamide (DMF) solvent were added into a beaker and stirred to obtain a mixed solvent, 1g of PLLA powder was weighed and added to the mixed solvent and stirred at room temperature until completely dissolved to obtain a PLLA solution;

[0063] (2) press n EG :n PLLA The mol ratio of =3:1 measures the ethylene glycol solution of corresponding volume and adds in the PLLA solution of step (1) gained under stirring condition, obtains P (LLA-EG) mixed suspension;

[0064] (3) press m SnCl2 :m PLLA+EG =0.08:1 takes by weighing the stannous chloride of corresponding quality and adds in the P (LLA-EG) mixed suspension of step (2) gained;

[0065] (4) Transfer the P(LLA-EG) mixed...

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

PropertyMeasurementUnit
thicknessaaaaaaaaaa
diameteraaaaaaaaaa
Login to View More

Abstract

The invention discloses a biogel electrolyte composed of PAN and modified PLLA and a preparation method thereof. The skeleton membrane of the biogel electrolyte composed of PAN and modified PLLA in the present invention is a nanofibrous membrane composed of PAN and modified PLLA, wherein the mass ratio of PAN to modified PLLA is (2.5-4.5):1. The raw material of the present invention has adopted modified PLLA and PAN, utilizes two kinds of materials to utilize the hydrogen bonding between the two, reduces the "passivation effect" that pure PAN produces, improves electrochemical performance, and PLLA is modified, further The mechanical strength of the polymer is stabilized, thereby ensuring the stability of the mechanical and electrochemical properties of the biogel electrolyte composed of the PAN and the modified PLLA of the present invention.

Description

technical field [0001] The invention belongs to the field of material chemistry, and in particular relates to a biogel electrolyte composed of PAN and modified PLLA and a preparation method thereof. Background technique [0002] Compared with inorganic solid electrolytes, gel polymer electrolytes not only have good mechanical properties of solid electrolytes, but also have high ionic conductivity of liquid electrolytes. Therefore, lithium ions in the gel polymer electrolyte can be transported not only by the movement of the polymer chain, but also by the swollen gel phase or liquid phase. Gel polymers are considered to be the best candidates to replace commercial liquid electrolytes. [0003] Polyacrylonitrile (PAN) is widely used in the construction of polymer electrolyte matrix materials due to its high ionic conductivity and electrochemical oxidation resistance. At the same time, at 298K, the ionic conductivity of the gel polymer electrolyte constructed by it is about f...

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 Patents(China)
IPC IPC(8): H01M10/0565H01M10/058C08G63/91D01D5/00D04H1/728B82Y30/00B82Y40/00
CPCH01M10/0565H01M10/058C08G63/912B82Y30/00B82Y40/00D04H1/728D01D5/0015Y02E60/10Y02P70/50
Inventor 潘安强柴思敏
Owner CENT SOUTH UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com