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Solvent-free polymer ion conductor as well as preparation method and application thereof

A technology of ionic conductors and polymers, applied in the direction of organic material conductors, cable/conductor manufacturing, conductors, etc., can solve the problems of high ionic conductivity and low room temperature ionic conductivity, and achieve high ionic conductivity, simple operation, and good performance. The effect of applying the foreground

Active Publication Date: 2021-09-07
BEIJING INST OF NANOENERGY & NANOSYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The object of the present invention is to provide a solvent-free polymer ion conductor and its preparation method and application in order to overcome the problem of low room temperature ionic conductivity of the solvent-free polymer ion conductor in the prior art. The solvent-free polymer ion conductor has Advantages of high ionic conductivity at room temperature

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  • Solvent-free polymer ion conductor as well as preparation method and application thereof
  • Solvent-free polymer ion conductor as well as preparation method and application thereof
  • Solvent-free polymer ion conductor as well as preparation method and application thereof

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preparation example Construction

[0025] The first aspect of the present invention provides a method for preparing a solvent-free polymer ion conductor. The method includes: first contacting an amino group or hydrazide-containing compound, an aldehyde compound, and an organic metal lithium salt in an organic solvent, and a reversible A Schiff base reaction to obtain a gel, and then drying the gel to obtain a solvent-free polymer ion conductor;

[0026] Wherein, at least one of the amino group or hydrazide-containing compound and the aldehyde compound is a polymer;

[0027] The amino group-containing compound is selected from at least one of polyoxyethylene diamine, polydimethylsiloxane diamine, s-phenylenediamine, and p-phenylenediamine, and the hydrazide-containing compound is selected from bis-p-phenylene diamine Benzohydrazide-terminated polyoxyethylene and / or N,N,N,N-tetrapropionylhydrazide-terminated polydimethylsiloxane;

[0028] The aldehyde compound is selected from at least one of trimesaldehyde, ter...

Embodiment 1

[0055] 1) Dissolve 400mg of polyoxyethylene diamine (P107103-5g, number average molecular weight 2000g / mol) and 0.328g of lithium bistrifluoromethanesulfonimide in 2mL of N,N-dimethyl In base formamide, mixed solution I is obtained;

[0056] 2) Dissolve 25 mg of trimesaldehyde in 300 μL of N,N-dimethylformamide at 60°C to obtain a mixed solution II;

[0057] 3) Mix the above-mentioned mixed solution I and the above-mentioned mixed solution II with a mixer, pour it into a polytetrafluoroethylene abrasive tool, remove air bubbles and react at room temperature for 2 hours to obtain a gel, and then place the obtained gel at 60°C Dry in a vacuum oven for 48 hours to completely volatilize the solvent N,N-dimethylformamide to obtain a solvent-free polymer ion conductor.

[0058] The solvent-free polymer ion conductor that embodiment 1 obtains carries out infrared spectroscopic analysis, and the result is as follows figure 1 Shown: by figure 1 It can be seen that 1646cm -1 The abs...

Embodiment 2

[0060] 1) Dissolve 2 g of polydimethylsiloxane diamine (DMS-A21, number average molecular weight: 5000 g / mol) and 0.6 g of lithium bistrifluoromethanesulfonyl imide in 1 mL of trichloro In methane, mixed liquid I was obtained;

[0061] 2) Dissolving 33 mg of trimesaldehyde in 300 μL of chloroform at room temperature to obtain a mixed solution II;

[0062] 3) Mix the above-mentioned mixed solution I and the above-mentioned mixed solution II with a mixer, pour it into a polytetrafluoroethylene abrasive tool, remove air bubbles and react at room temperature for 2 hours to obtain a gel, and then place the obtained gel at 60°C Dry in a vacuum oven for 48 hours, so that the solvent chloroform is completely volatilized, and a solvent-free polymer ion conductor is obtained.

[0063] The obtained solvent-free polymer ion conductor was analyzed by infrared spectroscopy, and the results were as follows: figure 2 Shown: by figure 2 It can be seen that 1646cm -1 The absorption peak c...

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Abstract

The invention relates to the field of functional polymer materials, and discloses a solvent-free polymer ion conductor as well as a preparation method and application thereof. The preparation method comprises the steps of firstly, contacting a compound containing amino or hydrazide, an aldehyde compound and an organic metal lithium salt in an organic solvent, carrying out reversible Schiff base reaction to obtain gel, and then drying the gel to obtain the solvent-free polymer ion conductor. The solvent-free polymer ionic conductor prepared by the method has the advantage of high room-temperature ionic conductivity.

Description

technical field [0001] The invention relates to the field of functional polymer materials, in particular to a solvent-free polymer ion conductor and its preparation method and application. Background technique [0002] Polymer ion conductors have the advantages of good film-forming properties, light weight, good flexibility, and high stability, and can be endowed with various functions such as stretchability, self-healing, transparency, and shape memory through flexible and diverse molecular chain design. properties, showing good application prospects, has attracted widespread attention. [0003] Polymer ion conductors can generally be divided into two categories: polymer gels and solvent-free polymer ion conductors. The liquid in the polymer gel will undergo phase change and solidify at low temperature, and the solvent in the gel will volatilize under room / high temperature conditions, resulting in a sharp decrease in the stretchability and ionic conductivity of the gel, so...

Claims

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Application Information

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IPC IPC(8): H01B13/00H01B1/12H01M4/62
CPCH01B13/00H01B1/122H01M4/624Y02E60/10
Inventor 蒲雄张盼盼王中林
Owner BEIJING INST OF NANOENERGY & NANOSYST
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