Polymer-based film for dielectric material or energy storage material

A technology of dielectric materials and energy storage materials, which is applied to fixed capacitance parts, thin film/thick film capacitors, laminated capacitors, etc., to achieve high energy storage density, high dielectric constant, and high breakdown strength

Pending Publication Date: 2022-07-15
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Especially as a dielectric material for ene

Method used

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  • Polymer-based film for dielectric material or energy storage material
  • Polymer-based film for dielectric material or energy storage material

Examples

Experimental program
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Effect test

Embodiment 1

[0028] The preparation method of PEF is as follows:

[0029] Furandicarboxylic acid (0.2mol) was added to a three-necked flask with mechanical stirring and nitrogen protection, followed by adding ethylene glycol (0.32mol) and catalyst tetrabutyl titanate (60 microliters), and reacted at 210 degrees for 2 hours, After that, it was heated to 250 degrees and reacted under vacuum conditions (10 Pa) for 4 hours.

[0030] The PEF was melted at 220°C and then hot pressed into a film with a thickness of 200 microns.

[0031] At 23°C, the dielectric constant was 5.4 and the dielectric loss was 0.019 when tested at 1000 Hz.

Embodiment 2

[0033] The preparation method of PEF is the same as that in Example 1.

[0034] The PEF was melted at 220 °C, and then hot-pressed into a film with a thickness of 30 microns. At 23 °C, the energy storage density at 1000 Hz was 2.4 J / cm. 3 And the charge-discharge efficiency is 96%.

Embodiment 3

[0036] The preparation method of PEF is the same as that in Example 1.

[0037] The PEF was melted at 220°C, and then hot-pressed into a film with a thickness of 30 microns, which had a breakdown strength of 330 MV / m at 23°C.

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Abstract

The invention relates to the field of macromolecules and the field of energy, and discloses a polymer-based film for a dielectric material or an energy storage material. The structure of the polyethylene furandicarboxylate is shown as a formula (I). The invention further discloses application of the PEF in the field of dielectrics and application of the PEF in the field of thin-film capacitor energy storage. When the PEF is applied to the field of dielectric materials, the PEF has a high dielectric constant of 5.41 and a low dielectric loss of 0.019. When the PEF is applied to the field of thin film capacitors, the PEF has high discharge energy density and ultrahigh charge-discharge efficiency 96% at 300MV/m, which is higher than that of most polymers. The invention provides a basis for application of a bio-based material in the fields of dielectrics and energy storage.

Description

technical field [0001] The invention belongs to the field of dielectric materials, in particular to a polymer-based film used for dielectric materials or energy storage materials. Background technique [0002] With the rapid development of the global economy and population growth, the consumption of resources continues to increase, and the demand for energy is imminent. High-dielectric and high-energy-storage dielectric materials have a wide range of applications in the fields of microelectronics, electricity, and energy storage. Film capacitors, on the other hand, can store high-power electrical energy and can release a large amount of electrical energy in an instant and are very popular. Among them, dielectric materials can double or several times improve the capacitance storage capacity of film capacitors, so they have been widely studied. Among various dielectric materials, polymer-based dielectric materials have become a research hotspot due to their excellent process...

Claims

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Application Information

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IPC IPC(8): C08J5/18C08L67/02C08G63/672H01G4/18H01G4/33
CPCC08J5/18C08G63/672H01G4/18H01G4/33C08J2367/02Y02E60/13
Inventor 周光远姜敏王国强
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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