A kind of polymer electrolyte and its preparation method and battery comprising the polymer electrolyte

A polymer and electrolyte technology, applied in the field of polymer electrolyte preparation, can solve the problems of low lithium ion migration number, low room temperature conductivity, polymer electrolyte mechanical properties, electrochemical stability and thermal stability not meeting ideal requirements, etc. , to achieve the effect of good electrochemical stability, improved migration number, room temperature conductivity and lithium ion migration number.

Active Publication Date: 2022-02-08
广东永邦新能源股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the room temperature conductivity of the prepared polymer electrolyte is low, and the lithium ion migration number is also low, which cannot meet the ideal requirements. At the same time, the mechanical properties, electrochemical stability and thermal stability of the polymer electrolyte have not met the ideal requirements. For this reason, we need to provide a new idea for a polymer electrolyte, its preparation method and a battery including the polymer electrolyte

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A polymer electrolyte, the polymer electrolyte includes a polymer matrix, an organic solvent, an inorganic filler, a first solution and a second solution; the polymer matrix and the inorganic filler are dispersed in an organic solvent; the inorganic filler is a modified calcium-based montmorillonite Two mixtures of soil and modified nano-calcium carbonate;

[0026] The polymer matrix is ​​a mixture of polyethylene oxide and polymethyl methacrylate.

[0027] The organic solvent is N,N-dimethylformamide.

[0028] The first solution is LiPF 6 of the dispersion.

[0029] The second solution is ethylene carbonate.

[0030] A kind of polymer electrolyte, its preparation method comprises the following steps:

[0031] S1. Add the above-mentioned appropriate amount of polyethylene oxide, polymethyl methacrylate, modified calcium-based montmorillonite, and modified nano-calcium carbonate to 100 parts under stirring conditions according to the mass ratio of 13:1.5:1.5:1.5 In ...

Embodiment 2

[0036]A polymer electrolyte, the polymer electrolyte includes a polymer matrix, an organic solvent, an inorganic filler, a first solution and a second solution; the polymer matrix and the inorganic filler are dispersed in an organic solvent; the inorganic filler is a modified calcium-based montmorillonite A mixture of soil and nano-nickel oxide;

[0037] The polymer matrix is ​​a mixture of polyethylene oxide and polyvinyl chloride.

[0038] Preferably, the organic solvent is N,N-dimethylacetamide.

[0039] The first solution is LiBF 4 of the dispersion.

[0040] The second solution is ethylene carbonate.

[0041] A kind of polymer electrolyte, its preparation method comprises the following steps:

[0042] S1. Add the above-mentioned polyethylene oxide, polyvinyl chloride, modified calcium-based montmorillonite, and nano-manganese dioxide into the organic solvent with stirring at a mass ratio of 13:1.5:1.5:1.5 to form a uniform and transparent Suspension, after standing u...

Embodiment 3

[0047] A polymer electrolyte, the polymer electrolyte includes a polymer matrix, an organic solvent, an inorganic filler, a first solution and a second solution; the polymer matrix and the inorganic filler are dispersed in an organic solvent; the inorganic filler is a modified calcium-based montmorillonite Two mixtures of soil and nano-nickel oxide;

[0048] The polymer matrix is ​​a mixture of polyethylene oxide and polyvinylidene fluoride.

[0049] The organic solvent is acetone.

[0050] The first solution is LiAsF 6 of the dispersion.

[0051] The second solution is diethyl carbonate.

[0052] A kind of polymer electrolyte, its preparation method comprises the following steps:

[0053] S1. Add the above-mentioned polyethylene oxide, polyvinylidene fluoride, modified calcium-based montmorillonite, and nano-nickel oxide to the organic solvent with stirring at a mass ratio of 13:1.5:1.5:1.5 to form a uniform and transparent Suspension, after standing under reduced pressu...

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Abstract

The present invention relates to the technical field of polymer electrolyte preparation, in particular to a polymer electrolyte and a preparation method thereof and a battery comprising the polymer electrolyte; the polymer electrolyte includes a polymer matrix, an organic solvent, an inorganic filler, a first solution and a second solution. Two solutions; the polymer matrix and the inorganic filler are dispersed in an organic solvent; the inorganic filler is one or more of modified calcium-based montmorillonite, modified nano-calcium carbonate, and nano-nickel oxide; modified calcium The preparation method of base montmorillonite is realized by modifying calcium base montmorillonite and hexadecyltrimethylammonium bromide by ball milling; the invention provides a polymer electrolyte and a preparation method thereof and includes the polymer electrolyte The battery, the polymer electrolyte prepared by the invention has higher thermodynamic stability, ion conductivity, better mechanical strength and electrochemical stability.

Description

technical field [0001] The invention relates to the technical field of polymer electrolyte preparation, in particular to a polymer electrolyte, a preparation method thereof and a battery comprising the polymer electrolyte. Background technique [0002] With the development of the world economy, people's demand for energy is getting bigger and higher, and the requirements are getting higher and higher, and it has increasingly become a global tracking hotspot and a world trend. Lithium-ion batteries are a main direction of new energy development. Lithium-ion batteries are not only widely used in daily life appliances such as mobile phones, notebooks, tablet computers, etc., but also in electric vehicles and hybrid vehicles. The commonly used inorganic materials generally include oxide materials, ferroelectric materials, lithium-containing compounds, molecular sieves, and solid acids. The doping method generally adopts the direct feeding method, that is, the inorganic materials...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/0565H01M10/0525
CPCH01M10/0525H01M10/0565H01M2300/0082Y02E60/10
Inventor 姚学永熊凡
Owner 广东永邦新能源股份有限公司
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