Novel MOFs (metal organic frameworks)-based composite supercapacitor electrode, and preparation and application of novel MOFs-based composite supercapacitor electrode

A composite electrode, a new type of technology, applied in the field of new MOFs-based composite supercapacitor electrodes and its preparation, can solve the problems of poor bonding force between MOFs and PANI, low electrochemical performance of supercapacitor electrodes, etc., and achieve good feasibility and low cost , The effect of simple process

Active Publication Date: 2019-02-19
DONGHUA UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a novel MOFs-based composite supercapacitor electrode and its preparation method and application, so as to overcome the defects such as the low electrochemical performance of the supercapacitor electrode in the prior art and the poor interface bonding force between MOFs and PANI.

Method used

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  • Novel MOFs (metal organic frameworks)-based composite supercapacitor electrode, and preparation and application of novel MOFs-based composite supercapacitor electrode
  • Novel MOFs (metal organic frameworks)-based composite supercapacitor electrode, and preparation and application of novel MOFs-based composite supercapacitor electrode

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Embodiment 1

[0043] (1) Preparation of active MOFs substrate: Anhydrous zinc acetate, triazoledicarboxylic acid, and methanol were used as raw materials, and the molar ratio of anhydrous zinc acetate and triazoledicarboxylic acid was 1:4. Shake 280mg of anhydrous zinc acetate and 1108mg of triazoledicarboxylic acid in a beaker evenly, then add 80mL of methanol, stir mechanically for 5min, and react at room temperature for 24h to obtain a white suspension. Among them, the obtained active MOFs are polyhedral morphology with uniform size and complete structure, and the size is controlled at about 200nm.

[0044] (2) Prepolymerization of PANI: In the above white suspension, add 100uL aniline monomer and stir for 1h, cool the temperature to -5°C, then add 242mg dibenzoyl peroxide and 100uL 30% hydrogen peroxide, while keeping the temperature at Reaction at -5°C for 18h. After that, centrifuge at room temperature with a centrifugation speed of 5000 rpm and a centrifugation time of 3 minutes to ...

Embodiment 2

[0048] (1) Preparation of active MOFs substrates: using anhydrous zinc acetate, triazole dicarboxylic acid, 2-aminoterephthalic acid, and methanol as raw materials, wherein anhydrous zinc acetate, triazole dicarboxylic acid, 2-amino-p-phenylene The molar ratio of dicarboxylic acid is 1:2:1. Shake 372mg of anhydrous zinc acetate, 638mg of triazoledicarboxylic acid and 368mg of 2-aminoterephthalic acid in a beaker, then add 80mL of methanol, stir mechanically for 5min, and react at room temperature for 18h to obtain a white suspension. Among them, the obtained active MOFs are polyhedral morphology with uniform size and complete structure, and the size is controlled at about 500nm.

[0049] (2) Prepolymerization of PANI: In the above white suspension, add 100uL aniline monomer and stir for 1h, cool the temperature to -5°C, then add 363mg dibenzoyl peroxide and 50uL 30% hydrogen peroxide, while keeping the temperature at Reaction at -5°C for 18h. After that, centrifuge at room t...

Embodiment 3

[0054] (1) Preparation of active MOFs substrate: using anhydrous zinc acetate, triazole dicarboxylic acid, 5,10,15,20-tetrakis(4-carboxyphenyl)porphyrin, and methanol as raw materials, in which anhydrous zinc acetate The molar ratio of triazoledicarboxylic acid and 5,10,15,20-tetrakis(4-carboxyphenyl)porphyrin is 1:2:2. First dissolve 278mg of anhydrous zinc acetate in 40mL of methanol, then dissolve 478mg of triazoledicarboxylic acid and 2408mg of 5,10,15,20-tetrakis(4-carboxyphenyl)porphyrin in 40mL of methanol and then mix them mechanically Stir for 5 min, and react at room temperature for 20 h to obtain a white suspension. Among them, the obtained active MOFs are polyhedrons with uniform size and complete structure, and the size is controlled at about 1 μm.

[0055] (2) Prepolymerization of PANI: In the above white suspension, add 100uL aniline monomer and stir for 1h, cool the temperature to -5°C, then add 121mg dibenzoyl peroxide and 150uL 30% hydrogen peroxide, while k...

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Abstract

The invention relates to a novel MOFs (metal organic frameworks)-based composite supercapacitor electrode, and preparation and application of the novel MOFs-based composite supercapacitor electrode. The novel MOFs-based composite supercapacitor electrode comprises MOFs/PANI (polyaniline), polytetrafluoroethylene (PTFE) and ketjenblack. A method for preparing the novel MOFs-based composite supercapacitor electrode includes preparing turbid liquid; preparing composite materials with the MOFs and polyaniline oligomers; preparing composite systems with the polyaniline deposited in the MOFs; preparing the novel MOFs-based composite electrode. The novel MOFs-based composite supercapacitor electrode, the preparation and the application have the advantages that the method includes simple processesand is good in feasibility; the novel MOFs-based composite supercapacitor electrode is made from wide varieties of raw materials, the raw materials are low in cost, and design spaces for active MOFsstructures are high in freedom.

Description

technical field [0001] The invention belongs to the field of electrodes and their preparation and application, in particular to a novel MOFs-based composite supercapacitor electrode and its preparation method and application. Background technique [0002] The rapid development of portable electronic devices and hybrid vehicles has promoted people's pursuit of high-power energy storage devices, and batteries have become the most commonly used electronic energy storage devices because of their small size and light weight. However, the energy transmission of the battery is slow, which limits its application to a large extent. Supercapacitor is a new type of energy storage device with broad application prospects. It has high specific power, high cycle life and fast charge and discharge ability. It has been widely studied as a battery substitute. Pore ​​structure materials with micropores and mesopores or macropores are the most ideal energy materials at present, because the act...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/30H01G11/48H01G11/86H01G11/24
CPCH01G11/24H01G11/30H01G11/48H01G11/86Y02E60/13
Inventor 赵昕姚梦瑶张清华赵方园董杰
Owner DONGHUA UNIV
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