Preparation method for energy-storage composite material

A composite material and energy storage technology, applied in the field of composite material preparation, can solve the problems of poor compatibility and uneven mixing of inorganic ceramics and organic polymer materials

Active Publication Date: 2015-01-28
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a method for preparing a composite material with a simple preparation method and high energy stor

Method used

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  • Preparation method for energy-storage composite material
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  • Preparation method for energy-storage composite material

Examples

Experimental program
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Effect test

Embodiment 1

[0028] Add 10 times the amount of hydantoin epoxy resin to the 2 mass % hydantoin epoxy resin aqueous solution, and add barium titanate powder with a particle size of 150 to 180 nanometers, stir and ultrasonically for 10 minutes, and then add 0.1 times the amount of hydantoin epoxy resin Dipropyltriamine curing agent, at room temperature, ultrasonic for 3 hours, stirred for 20 hours, and then the temperature was increased by 10°C every 1 hour. After the reaction was completed, the reactant was centrifugally cleaned, and dried in an 80°C blast drying oven for 24 hours. Grinding and crushing the dried product to obtain barium titanate powder modified with hydantoin epoxy resin;

[0029] Prepare 8% by mass of P(VDF-HFP) resin solution, add relative P(VDF-HFP) resin 10vol%, 20vol%, 30vol%, 40vol%, 50vol% hydantoin epoxy resin modified titanic acid therein Barium powder, after ball milling on a roller ball mill for 7 days, cast the sample on a glass sheet, and then dry it in an air...

Embodiment 2

[0031] Add strontium barium titanate powder modified with hydantoin epoxy resin to 10% by mass of PVDF matrix with a volume fraction of 50% of the matrix, and obtain a composite material in the same manner as in Example 1. Through the electrode test, at 100kV / mm The energy storage density measured under the electric field is 4.12J / cm 3 .

Embodiment 3

[0033] In the 12 mass % P (VDF-TrFE) matrix solution, add the niobium-magnesium-magnesium-zirconate lead titanate powder modified by the hydantoin epoxy resin with a relative matrix volume fraction of 50%, and obtain the composite material in the same manner as in Example 1. Through the electrode test, its energy storage density is measured as 3.69J / cm under the electric field of 100kV / mm 3 .

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Abstract

The invention discloses a preparation method of energy-storage composite material, and adopts the technical scheme as follows: hydantoin epoxy resin is used to coat and modify ceramic material, and then the mixture is in composite with vinylidene fluoride resin or a vinylidene fluoride copolymer resin matrix, so that the energy-storage composite material is obtained. According to the invention, the preparation method is simple, the composite material having high energy density in a low electric field is obtained, and problems about poor compatibility between inorganic ceramic and organic high polymer material and nonuniformity in mixing are solved.

Description

technical field [0001] The invention relates to a method for preparing composite materials, in particular to a new method for preparing nanometer composite materials with high energy storage density under low electric field. Background technique [0002] The application prospects of high energy storage materials in the field of electronics industry are becoming more and more extensive. People have developed various energy storage technologies accordingly, including lithium batteries, fuel cells, capacitors and supercapacitors, among which capacitors have high energy density and Fast charge-discharge speed has attracted much attention. The energy density of capacitors is determined by the dielectric material system. The material system with high dielectric constant, high breakdown electric field and low loss is the key to the preparation of high energy storage capacitors. [0003] General ceramics, such as barium titanate, barium strontium titanate, lead zirconate titanate, l...

Claims

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Application Information

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IPC IPC(8): C08L27/16C08L27/12C08L27/20C08K9/10C08K3/24C08K3/22
CPCC08K3/24C08K9/10C08K2201/003C08K2201/011C08L27/16
Inventor 张斗罗行陈超李志友周科朝
Owner CENT SOUTH UNIV
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