Preparing method and application of polymer electrolyte

A technology of reaction and reactants, which is applied in the field of polymer electrolytes, can solve the problems of reducing the electron cloud density of electron-deficient double bonds, high crystallinity of solid-state electrolytes, complex production processes, etc., to overcome the low reaction rate and conversion rate, reduce the Degree of damage and cost of response, avoiding expensive effects

Active Publication Date: 2019-08-27
HUAZHONG UNIV OF SCI & TECH
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Problems solved by technology

[0006] In view of the above defects or improvement needs of the prior art, the present invention provides a preparation method and application of a polymer electrolyte, which relies on metal salt-promoted mercapto-Michael addition reaction to achieve, wherein metal salt cations are used to contain The complexation of reactants with electron-deficient terminal double bonds reduces the electron cloud density of electron-deficient double bonds, making it easier for thiol anions to a

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  • Preparing method and application of polymer electrolyte
  • Preparing method and application of polymer electrolyte
  • Preparing method and application of polymer electrolyte

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[0055] The present invention also provides a method for preparing a polymer electrolyte, using the first reactant containing mercapto terminal and the second reactant containing acrylate terminal at both ends as raw materials, under the action of the main catalyst and the co-catalyst, the mercapto- Michael addition reaction to prepare a polymer electrolyte; where:

[0056] The first reactant contains at least three mercapto groups;

[0057] The main catalyst is used to capture the proton on the mercapto group of the first reactant, and then form a thiol anion, which is used to attack the electron-deficient double bond in the second reactant;

[0058] The cocatalyst is a metal salt; the cation of the metal salt undergoes a complex reaction with the second reactant, reduces the electron cloud density of the double bond of the acrylate, and promotes the attack of the thiol anion on the double bond of the acrylate. The bond undergoes mercapto-Michael addition reaction, which incr...

Embodiment 1

[0071] A method for metal salt-promoted mercapto-Michael addition reaction, carried out according to the following steps:

[0072] 1-hexanethiol, 2-propenoic acid-2-methoxyethyl ester and lithium bistrifluoromethanesulfonylimide were prepared as reaction components, 1-hexanethiol, 2-propenoic acid-2-methoxyethyl The molar ratio of ester to lithium bistrifluoromethanesulfonylimide is 5:5:1. The preparation process is as follows: put 1.41 ml of 1-hexanethiol, 1.29 ml of 2-propenoic acid-2-methoxyethyl ester and 0.574 g of lithium bistrifluoromethanesulfonylimide into a round bottom flask, and after magnetic stirring for 4 hours, , to obtain a reaction mixture.

[0073] Take 70 microliters of purified triethylamine and add it to the reaction mixture in the round bottom flask. The molar ratio of triethylamine to the sulfhydryl group of 1-hexanethiol is 1:20. After 10 seconds of magnetic stirring, quickly take out a small amount of the reaction mixture. , added dropwise between t...

Embodiment 2

[0075] A method for metal salt-promoted mercapto-Michael addition reaction, carried out according to the following steps:

[0076] 1-hexanethiol, 2-propenoic acid-2-methoxyethyl ester and lithium bistrifluoromethanesulfonylimide were prepared as reaction components, 1-hexanethiol, 2-propenoic acid-2-methoxyethyl The molar ratio of ester to lithium bistrifluoromethanesulfonylimide is 100:100:1. The preparation process is as follows: put 1.41 ml of 1-hexanethiol, 1.29 ml of 2-propenoic acid-2-methoxyethyl ester and 0.029 g of lithium bistrifluoromethanesulfonimide into a round bottom flask, and after magnetic stirring for 4 hours, , to obtain a reaction mixture.

[0077] Take 278 microliters of purified triethylamine and add it to the reaction mixture in the round bottom flask. The molar ratio of triethylamine to the sulfhydryl group of 1-hexanethiol is 1:5. After magnetic stirring for 10 seconds, quickly take out a small amount of the reaction mixture , added dropwise between...

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Abstract

The invention belongs to the field of polymer electrolytes, and relates to a preparing method and application of a polymer electrolyte. According to the preparing method, a first reactant containing sulfydryl terminals and a second reactant with the two ends containing acrylate terminals are taken as raw materials, and under the function of a main catalyst and a cocatalyst, a sulfydryl-Michael addition reaction is carried out for preparing the polymer electrolyte. The first reactant at least contains three sulfydryl groups; the main catalyst is used for capturing protons on the sulfydryl groups of the first reactant to form thioalcohol negative ions, and the thioalcohol negative ions are used for attacking electron-deficiency double bonds in the second reactant; metal salt serves as the cocatalyst; positive ions of the metal salt and the second reactant are subjected to a complex reaction, so that the electron cloud density of the double bonds of acrylate is lowered, the process that the thioalcohol negative ions attack the double bonds of the acrylate for the sulfydryl-Michael addition reaction is promoted, and the reaction speed and the conversion rate of the addition reaction are increased.

Description

technical field [0001] The invention belongs to the field of polymer electrolytes, and relates to a method for preparing polymer electrolytes and applications thereof, and more specifically, to a method for preparing polymer electrolytes by mercapto-Michael addition reaction catalyzed by metal salts. Background technique [0002] "Click" chemistry has attracted a lot of attention since it was proposed by Kolb, Finn, and Sharpless in 2001. Its advantages include fast reaction rate, quantifiable yield, almost no side reactions, and avoids the shortcomings of a series of common synthetic reactions. , such as time-consuming product separation and harsh reaction conditions. Therefore, "click" chemistry is widely used in the field of macromolecular synthesis such as polymer functionalization and network preparation. There are generally two pathways for thiol-ene reactions: (1) free radical-mediated addition reactions, commonly known as thiol-ene reactions; (2) thiol-Michael addit...

Claims

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Application Information

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IPC IPC(8): C08F120/28C08F4/00C08F4/08C08F122/14C08J5/18H01M10/0565
CPCC08F4/00C08F4/083C08F4/086C08F120/28C08F122/1006C08J5/18C08J2333/14C08J2335/02H01M10/0565Y02E60/10
Inventor 薛志刚姜可左偲王计嵘周炳华周兴平解孝林
Owner HUAZHONG UNIV OF SCI & TECH
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