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Polymer gel electrolyte modified by functionalized graphene oxide, and preparation method and application of same

A technology of gel electrolyte and polymer, applied in the direction of hybrid capacitor electrolyte, etc., can solve the problems of excessively large equivalent series resistance of supercapacitors, low specific capacitance of supercapacitors, and increased ion transmission paths, etc., to achieve fast migration, improve Ionic conductivity, the effect of widening ion transport channels

Active Publication Date: 2017-07-25
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

As an important part of solid-state supercapacitors, polymer gel electrolytes play an important role in the safety performance and cycle stability of supercapacitors. The effective series resistance is too large, which affects the power output, and the specific capacitance of the supercapacitor is low
However, the inorganic particles dispersed in the polymer matrix increase the transport path of ions, which is not conducive to the rapid migration of ions.

Method used

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  • Polymer gel electrolyte modified by functionalized graphene oxide, and preparation method and application of same
  • Polymer gel electrolyte modified by functionalized graphene oxide, and preparation method and application of same
  • Polymer gel electrolyte modified by functionalized graphene oxide, and preparation method and application of same

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Embodiment 1

[0036] The schematic diagram of the interlayer structure of the functionalized graphene oxide modified polymer gel electrolyte with a multilayer structure according to the present invention, see the appendix of the specification for details. figure 1 . It includes a polymer layer (1), a redox active material layer (2), a graphene oxide layer (3) with a multilayer structure, and the upper and lower sides of the graphene oxide layer (3) are respectively connected to the redox active material layer (2) and Polymer layer (1); functionalized graphene oxide of multilayer structure is arranged in the polymer gel matrix, polymer layer (1), redox active material layer (2) and graphene oxide layer of multilayer structure ( 3) There is a layer-to-layer gap between layers to form a three-dimensional multi-level interlayer structure of functionalized graphene oxide-modified polymer gel electrolyte. The interlayer gap formed by the multi-level interlayer structure provides efficient diffusi...

Embodiment 2

[0038] The schematic diagram of the interlayer structure of the functionalized graphene oxide-modified polymer gel electrolyte with a single-layer structure according to the present invention, see the appendix of the specification for details. figure 2 . It includes a polymer layer (1), a redox active material layer (2) and a graphene oxide layer (3) with a single-layer structure, and the upper and lower sides of the graphene oxide layer (3) are sequentially connected with the redox active material layer (2) and Polymer layer (1); functionalized graphene oxide with single-layer structure arranged in the polymer gel matrix, polymer layer (1), redox active material layer (2) and graphene oxide layer with single-layer structure ( 3) There is a layer-to-layer gap between layers to form a three-dimensional multi-level interlayer structure of functionalized graphene oxide-modified polymer gel electrolyte. The interlayer gap formed by the multi-level interlayer structure provides ef...

Embodiment 3

[0040] Schematic diagram of the molecular bridging force of the functionalized graphene oxide modified polymer gel electrolyte, see the attached image 3 . The force between the redox active material layer (2) and the polymer layer (1) includes: the hydroxyl group or amino group of the redox active material and the hydroxyl group of the polymer form a hydrogen bond intermolecular force; the hydroxyl group of the redox active material and the The hydroxyl groups of the polymer form ether linkage chemical bonds.

[0041] The force between the redox active material layer (2) and the graphene oxide layer (3) includes: the hydrogen bond intermolecular force formed between the hydroxyl group or amino group of the redox active material and the hydroxyl group or epoxy group of graphene oxide The benzene ring of the redox active material and the carbon six-membered ring of graphene oxide form a Π-Π stacking intermolecular force; the hydroxyl group or amino group of the redox active ma...

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Abstract

The invention discloses polymer gel electrolyte modified by functionalized graphene oxide, and a preparation method and application of the same. The functionalized graphene oxide is formed by the connection of a redox active substance with graphene oxide through the intermolecular forces between hydrogen bonds, the chemical bond acting force among ether bonds, ester bonds or amido bonds and the pi-pi stacking intermolecular forces. A multi-stage interlayer structure is a gap structure which is formed among a polyhydroxy high-molecular polymer layer, a redox active substance layer and a graphene oxide layer, and provides a short conveying channel for electrolyte ions. The electrolyte is used for a supercapacitor, has the high ionic conductivity and redox activity, and improves the specific capacitance.

Description

technical field [0001] The invention relates to a preparation method of a functionalized graphene oxide modified polymer gel electrolyte and an energy storage application of a solid supercapacitor, belonging to the field of new materials and new energy sources. Background technique [0002] With the development of economy and society, people's production and life are increasingly dependent on energy, and the resulting energy depletion and environmental pollution have reached a point that cannot be ignored. New technologies such as new energy development, energy saving and emission reduction, and environmental protection Development has become an extremely important and urgent subject for human beings. The new energy industry is playing an increasingly important role in the national economy. With the rapid development of wind power generation, photovoltaic power generation, mobile electronic equipment and other fields, high-performance energy storage devices have gradually b...

Claims

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Application Information

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IPC IPC(8): H01G11/56
CPCY02E60/13H01G11/56
Inventor 谢一兵王金辉
Owner SOUTHEAST UNIV
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