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

Preparation method of polyphosphazene urethane single ion solid electrolyte

A technology of solid electrolyte and nitrile urethane, applied in the direction of circuits, electrical components, secondary batteries, etc., can solve the problems of numerous steps, difficulty in changing the ratio and salt concentration, and complicated preparation methods, and achieve high lithium ion migration number, Effect of high electrochemical stability window and high room temperature conductivity

Inactive Publication Date: 2012-09-05
SHANGHAI JIAO TONG UNIV
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, its preparation method is complicated, there are many steps, and it is difficult to change the ratio and salt concentration. Therefore, the development of a single-ion electrolyte with convenient synthesis and modification and high conductivity has become an urgent problem to be solved.

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 of polyphosphazene urethane single ion solid electrolyte
  • Preparation method of polyphosphazene urethane single ion solid electrolyte
  • Preparation method of polyphosphazene urethane single ion solid electrolyte

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Step 1, in the there-necked flask of 250ml, the 50ml tetrahydrofuran THF solution containing 9.354g diethylene glycol monomethyl ether (77.85mmol) was added dropwise to 1.779g (74.13 g) dispersed in 50ml THF with a constant pressure dropping funnel. mmol) sodium hydride NaH, magnetic stirring at 40°C under nitrogen protection for 60 minutes until all NaH reaction is complete;

[0030] Step 2: Dissolve 5.00g (0.043mol) of polydichlorophosphazene in 100ml of THF, pour it into a 250ml single-necked flask, add dropwise 2.26g (0.0173mol) of the THF dispersion of lithium taurate, and add 5.5g of TEA as a solution. Acid binding agent, 0.01 g of tetrabutylammonium bromide was added as a catalyst, and then the reaction was stirred and refluxed at room temperature for 12 hours. Then 9.838 g of sodium salt NaO (CH 2 ) 2 O(CH 2 ) 2 OCH 3 , continue to react for 24 hours;

[0031] Step 3, after the reaction is completed, filter, and the filtrate is subjected to rotary evaporat...

Embodiment 2

[0037] Step 1, in the there-necked flask of 250ml, the 50mlTHF solution containing 4..677g diethylene glycol monomethyl ether (38.93mmol) was added dropwise to the 0.889g (37.07g) dispersed in 50mlTHF with a constant pressure dropping funnel. mmol) NaH, magnetic stirring at 40°C under nitrogen protection for 80 minutes until all NaH reaction is complete;

[0038] Step 2: Dissolve 2.500g (0.022mol) of polydichlorophosphazene in 100ml of THF, pour it into a 250ml single-necked flask, add dropwise the THF dispersion of 1.13g (0.008mol) of lithium taurate, and add 2.75g of TEA as a solution. Acid binding agent, 0.01 g of tetrabutylammonium bromide was added as a catalyst, and then the reaction was stirred and refluxed at room temperature for 12 hours. Then 4.919 g of sodium salt NaO (CH 2 ) 2 O(CH 2 ) 2 OCH 3 , continue to react for 24 hours;

[0039] Step 3, after the reaction is completed, filter, and the filtrate is subjected to rotary evaporation to remove THF. The prod...

Embodiment 3

[0045] Step 1, in the there-necked flask of 250ml, the 50mlTHF solution containing 10.289g diethylene glycol monomethyl ether (93.42mmol) was added dropwise to 2.135g (88.96mmol) dispersed in 50mlTHF with a constant pressure dropping funnel Magnetic stirring in NaH at 40°C under nitrogen protection for 60 minutes until all NaH reaction is complete;

[0046] Step 2: Dissolve 6.00g (0.052mol) of polydichlorophosphazene in 100ml of THF, pour it into a 250ml single-necked flask, add dropwise 2.712g (0.0173mol) of the THF dispersion of lithium taurate, add 6.6g of TEA for Acid binding agent, 0.01 g of tetrabutylammonium bromide was added as a catalyst, and then the reaction was stirred and refluxed at room temperature for 12 hours. Then 11.806 g of sodium salt NaO (CH 2 ) 2 O(CH 2 ) 2 OCH 3 , continue to react for 24 hours;

[0047] Step 3, after the reaction is completed, filter, and the filtrate is subjected to rotary evaporation to remove THF. The product was washed three...

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 relates to a preparation method of a polyphosphazene urethane single ion solid electrolyte in the technical field of lithium battery. The polyphosphazene rethane single ion solid electrolyte is prepared by heating 1,4-butanediol and poly[(diethylene glycol monomethyl ether) 1.6 (lithium taurate) 0.4] phosphazene for reaction and carrying out aging treatment. The polyphosphazene urethane single ion solid electrolyte prepared by the method of the invention has convenient preparation, high room-temperature conductivity, good mechanical property, no liquid composition, high lithium-ion transport number and stable electrochemistry window. The steps of the method are simple, and the polyphosphazene urethane single ion solid electrolyte is high in conductivity, favorable in mechanical property and good in electrochemistry stability.

Description

technical field [0001] The invention relates to a dielectric in the technical field of lithium batteries and a preparation method thereof, in particular to a preparation method of a polyphosphazene urethane single ion solid electrolyte. Background technique [0002] The rapid development of microelectronics technology has made portable electronic products such as notebook computers, mobile phones, and digital cameras widely popularized. As a supporting power source for portable electronic products, lithium-ion secondary batteries have unique advantages such as large specific energy, high operating voltage, wide application temperature range, low self-discharge rate, long cycle life, no pollution, and good safety performance. One of the most ideal green power sources in the eleventh century. [0003] Depending on the electrolyte used, lithium-ion secondary batteries can be classified into liquid lithium-ion batteries and polymer lithium-ion batteries. In addition to the adv...

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): H01M10/0565C08G18/50C08G65/34
CPCY02E60/10
Inventor 黄小彬张家维唐小真陈奎永顾晓俊
Owner SHANGHAI JIAO TONG UNIV