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A metal oxide/conductive polymer cross-pattern array and its preparation method

A conductive polymer and cross-shaped technology, which is used in the manufacture of hybrid/electric double-layer capacitors, hybrid capacitor electrodes, etc. Effect

Active Publication Date: 2022-01-11
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The purpose of the present invention is to provide a metal oxide / conductive polymer cross-pattern array and its preparation method to solve the problem of irreversible redox of metal oxides and further improve the conductivity of electrode materials

Method used

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  • A metal oxide/conductive polymer cross-pattern array and its preparation method
  • A metal oxide/conductive polymer cross-pattern array and its preparation method
  • A metal oxide/conductive polymer cross-pattern array and its preparation method

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preparation example Construction

[0049] The present invention also provides a method for preparing a metal oxide / conductive polymer cross-cut flower array, comprising the following steps:

[0050] Dispersing the oxidizing metal salt on the growth medium, using a gas phase polymerization method to cause the metal salt dispersed on the growth medium to catalyze the polymerization reaction of the reaction monomer in the gas phase, and at the same time, the metal salt itself undergoes a hydrolysis reaction to obtain a first reaction product;

[0051] The first reaction product is annealed to obtain a metal oxide / conductive polymer cross-pattern array.

[0052] In the embodiment of the present invention, the growth medium dispersed with the ferric salt is firstly prepared, which specifically includes: adding the oxidative metal salt into the volatile organic solvent, stirring until the metal salt dissolves to obtain the metal salt solution; adding the growth medium to the metal salt solution , continue to stir unt...

Embodiment 1

[0072] The present embodiment 1 provides a kind of preparation method of iron oxide / poly (3,4-ethylenedioxythiophene) cross piece flower array, comprises the following steps:

[0073] 1. Weigh 6.7575g of FeCl 3 ·6H 2 O was added to 50mL of absolute ethanol, magnetically stirred until FeCl 3 ·6H 2 O completely dissolves to give FeCl 3 ·6H 2 O ethanol solution; Weigh 2g of NaCl and add to 5mL of FeCl obtained above 3 ·6H 2 O in ethanol solution, magnetically stirred until viscous NaCl and FeCl formed 3 ·6H 2 O mixture.

[0074] In the present embodiment, the viscous mixture obtained by stirring is in a state that the iron salt absorbs a small amount of water after the complete volatilization of absolute ethanol. Stirring time varies according to the ambient humidity, generally 1 to 1.5 hours.

[0075] 2. Spread the viscous mixture obtained above thinly and evenly on the nickel foam, then suspend the nickel foam in the middle and upper part of the reaction kettle, and the...

Embodiment 2

[0082] This embodiment provides a method for preparing an iron oxide / poly(3,4-ethylenedioxythiophene) cross-cut flower array polymerized in situ on carbon cloth, comprising the following steps:

[0083] 1. Weigh 6.7575g of FeCl 3 ·6H 2 O was added to 50mL of absolute ethanol, magnetically stirred until FeCl 3 ·6H 2 O completely dissolves to give FeCl 3 ·6H 2 O ethanol solution; add 2ml FeCl to 1cm×1cm carbon cloth 3 ·6H 2 In the ethanol solution of O, stir magnetically until the ethanol is completely volatilized, and a completely wetted FeCl 3 ·6H 2 O's carbon cloth.

[0084] 2. Will completely infiltrate FeCl 3 ·6H 2 The carbon cloth of O is placed on the nickel foam, and then the nickel foam is suspended in the middle and upper part of the reactor, and then 0.05mL of 3,4-ethylenedioxythiophene monomer is dropped on the bottom of the reactor.

[0085] 3. Put the above reaction kettle into a drying oven with an initial temperature of 50°C, raise the temperature to 1...

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Abstract

The invention discloses a metal oxide / conductive polymer cross-cut flower array and a preparation method thereof. The metal oxide / conductive polymer cross-cut flower array is polymerized by an oxidative metal salt dispersed on a growth medium to catalyze reaction monomers reaction, and the metal salt itself undergoes a hydrolysis reaction and is then annealed. The metal salt is used as the catalyst for the preparation of the conductive polymer and the precursor for the preparation of the metal oxide at the same time. The polymerization reaction and the hydrolysis reaction occur simultaneously, so that the metal oxide and the conductive polymer are not simply mixed with two substances but have a coating intercalation. of tight integration. The conductive polymer-coated metal oxide can isolate the direct contact between the metal oxide and the electrolyte, and prevent the metal oxide from dissolving in the electrolyte during the oxidation-reduction process to form an irreversible capacitor. In addition, the cross-flower shape has a higher specific surface area, and the array distribution provides fast transport channels for ions and electrons, thereby improving the conductivity of the material.

Description

technical field [0001] The technical field of preparation of electrochemical energy storage materials of the present invention, in particular, relates to a metal oxide / conductive polymer cross-cut flower array and a preparation method thereof. Background technique [0002] Supercapacitors not only have excellent safety and adaptability, but also have a wide range of electrode and electrolyte materials and sources, flexible structure types, and can be used in different working environments, so they have good application prospects. At present, the energy density of supercapacitors is low, which is mainly limited by the low specific capacitance of electrode materials. Pseudocapacitive materials have a higher theoretical specific capacitance than electric double layer capacitor materials, and are the most promising materials for improving the energy density of supercapacitors. [0003] Metal oxide electrode materials are pseudocapacitive electrode materials, commonly used are M...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G11/30H01G11/46H01G11/48H01G11/24H01G11/86
CPCH01G11/30H01G11/46H01G11/48H01G11/24H01G11/86Y02E60/13
Inventor 李娜杨桥吴序豪
Owner GUANGDONG UNIV OF TECH