Polymer solid electrolyte and preparation method and application thereof

A technology of solid electrolytes and polymers, applied in the direction of solid electrolytes, electrolytes, non-aqueous electrolytes, etc., can solve problems such as poor transparency, and achieve the effect of improving compatibility

Active Publication Date: 2022-01-21
SHANTOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the defects and shortcomings of the poor transparency of polymer solid electrolytes, and provide a preparation method for polymer solid electrolytes. First, the polymer monomers and alkali metal salts are mixed until the alkali metal salts are completely dissolved, and then A pre-polymerization system can be obtained by adding a cross-linking agent, a photoinitiator and a polar solvent and mixing evenly, which can significantly improve the compatibility between the polymer monomer and the strong polar component. After photocuring, the polymer solid electrolyte is formed high transparency

Method used

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  • Polymer solid electrolyte and preparation method and application thereof
  • Polymer solid electrolyte and preparation method and application thereof
  • Polymer solid electrolyte and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A method of preparing a polymer solid electrolyte comprising the steps of:

[0034] S1. 0.9 g of polyethylene glycol double acrylate (number average molecular weight 600) is sufficiently mixed with 0.18 g of lithium perchlorate, then 0.4 g of trimethylolpropane tris (3-mercaptoacide) and 0.05 g Photo initiator 1173, finally added 0.9Gembf 4 The ionic liquid, mixed uniform, resulting in a prepolymerization system;

[0035] S2. The pre-polymerization system in S1 is applied to the surface of the glass sheet, and 30s is irradiated with a UV lamp having a wavelength of 365 nm to obtain a high transparent polymer solid electrolyte.

[0036] Among them, the addition of alkali metal salts is 20% of the polymer monomer; the molar ratio of the carbon carbon double bond and the crosslinking agent in the polymer monomer is 1: 1; polar solvent and polymer monomer The mass ratio is 1: 1.

Embodiment 2～9

[0038] Example 2 to 9 Preparation Method and Example 1 of the polymer solid electrolyte are substantially the same, wherein the polymer monomer, a crosslinking agent, and a polar solvent are shown in Table 1.

[0039] Table 1

[0040]

[0041] The main parameters of the first embodiment of the present invention are provided as shown in Table 2, wherein the average molecular weight of the polymer monomer; b is the percentage of the amount of the alkali metal to relative to the polymer monomer; c is a polymer single The molar ratio of carbon carbon double bonding in the body and the carbon carbon double bond or thiol group in the crosslinking agent; D is the mass ratio of the polar solvent and the polymer monomer.

[0042] Table 2

[0043] Numbering A B C D Example 1 600 20％ 1：1 1：1 Example 2 200 20％ 1：1.1 1：1 Example 3 2000 20％ 1：1.2 1：1 Example 4 600 10％ 1：1 1：1 Example 5 600 5％ 1：1 1：1 Example 6 600 0.1％ 1：1 1：1 E...

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Abstract

The invention discloses a polymer solid electrolyte and a preparation method and application thereof. The preparation method of the polymer solid electrolyte comprises the following steps: dissolving an alkali metal salt in a polymer monomer, sequentially adding a cross-linking agent, a photoinitiator and a polar solvent, and uniformly mixing to obtain a pre-polymerization system; and uniformly coating the prepolymerization system on a mold, and curing by ultraviolet or visible light irradiation to obtain the polymer solid electrolyte, wherein the polymer monomer is polyethylene glycol diacrylate and / or polypropylene glycol diacrylate; the cross-linking agent is one or more of trimethylolpropane tri (3-mercaptopropionate), trimethylolpropane triacrylate and pentaerythritol triacrylate; the polar solvent is ionic liquid and / or butanedinitrile. According to the preparation method, the compatibility between the polymer monomer and the strong polar component in the prepolymerization system is remarkably improved, and the polymer solid electrolyte obtained after photocuring has high transparency.

Description

Technical field [0001] The present invention relates to the field of solid state electrolyte, and more particularly to a polymer solid electrolyte and a preparation method thereof and a method thereof. Background technique [0002] With the development of electrochemical technology, the safety of energy storage technology is increasingly attached. Most of the traditional electrochemical energy storage devices are used in liquid electrolytes, which is prone to liquid electrolyte leakage causes their combustion, explosion, and the like. The current effective solution is one of the ideal candidates for solid-state or gelation of electrolyte, and polymer electrolyte is one of the ideal candidates of solid or gel electrolytes. [0003] The polymer electrolyte is typically composed of a plurality of components, but also includes a strong polar component having excellent ionically conductive, but also a flexible polymer component. However, due to the polarity difference between its grou...

Claims

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Application Information

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IPC IPC(8): C08G75/045C09D181/02H01M10/0565
CPCC08G75/045C09D181/02H01M10/0565H01M2300/0091H01M2300/0082Y02E60/10Y02P20/54
Inventor 黄逸夫
Owner SHANTOU UNIV
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