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Network polymer material applied to super capacitor electrode and provided with nitride and oxygen atoms and preparation method thereof

A technology of polymer materials and supercapacitors, applied in the field of material science, can solve the problems of few effective active sites and uneven distribution

Active Publication Date: 2016-12-07
DALIAN UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the above methods are single introduction of a certain heteroatom, which will lead to fewer effective active sites in the material and prone to uneven distribution.
How to ensure that there are more active sites and uniform distribution on the electrode materials for supercapacitors is still a challenge

Method used

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  • Network polymer material applied to super capacitor electrode and provided with nitride and oxygen atoms and preparation method thereof
  • Network polymer material applied to super capacitor electrode and provided with nitride and oxygen atoms and preparation method thereof
  • Network polymer material applied to super capacitor electrode and provided with nitride and oxygen atoms and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] In this example, MHCF@600 was prepared through coupling reaction and polymerization reaction.

[0057] MHCF@600 is formed by the polymerization of dinitrile monomers shown in formula II. Each dinitrile monomer contains two cyano groups, and each cyano group can interact with one of the other two dinitrile monomers. The cyano group is randomly tricyclized to form a s-triazine structure, and the cyano groups between multiple dinitrile monomers undergo a tricyclic reaction, thereby connecting to form a network polymer containing a s-triazine structure, which has the following formula I Repeating structural unit:

[0058]

[0059] among them: for

[0060] for

[0061] for

[0062] Same or different

[0063] R 1 , R 2 , R 3 , R 4 Independently one of H, F, Cl, Br, I, COOH, alkoxy;

[0064] R 1 , R 2 , R 3 , R 4 Same or different

[0065] Here is a list of one of the typical structures contained in network polymers, as shown below:

[0066]

[0067] In this embodiment, R 1 , R 2 ,...

Embodiment 2

[0095] In this example, MHCF@650 was prepared through coupling reaction and polymerization reaction.

[0096] (1) Preparation of PDBN

[0097] As described in Example 1.

[0098] (2) Preparation of MHCF@650

[0099] Except that the polymerization temperature in step (2) of Example 1 is changed from 600°C to 650°C, other processes and parameters are the same as in Example 1. The yield of the obtained polymer MHCF@650 was 320 mg, and the yield was 64%.

[0100] The nitrogen absorption and desorption curve and pore size distribution of MHCF@650 are shown in Image 6 .

[0101] In order to further verify its electrical properties, electrochemical performance tests were carried out. The test method is as described in Example 1.

[0102] The cyclic voltammetry curve, constant current charge and discharge curve, change of specific capacity with current density and AC impedance spectrum of electrode materials made by MHCF@650 Figure 8-11 .

[0103] After the electrode material polymerized at 6...

Embodiment 3

[0105] In this example, MHCF@700 was prepared through coupling reaction and polymerization reaction.

[0106] (1) Preparation of PDBN

[0107] As described in Example 1.

[0108] (2) Preparation of MHCF@700

[0109] Except that the polymerization temperature in step (2) of Example 1 was changed from 600°C to 700°C, the other processes and parameters were the same as in Example 1. The yield of the obtained polymer MHCF@650 was 360 mg, and the yield was 72%.

[0110] Refer to the nitrogen adsorption and desorption curve and pore size distribution of MHCF@700 Image 6 .

[0111] In order to further verify its electrical properties, electrochemical performance tests were carried out. The test method is as described in Example 1.

[0112] The cyclic voltammetry curve, constant current charge and discharge curve, change of specific capacity with current density and AC impedance spectrum of the electrode material prepared by MHCF@700 are shown in the attached Figure 8-11 .

[0113] After the ...

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Abstract

The invention discloses a network polymer material applied to a super capacitor electrode and provided with nitride and oxygen atoms and a preparation method thereof and belongs to the field of material science. The network polymer material provided with the nitride and oxygen atoms is a network polymer with phthalazone and s-triazine structures and has a repetitive unit structure expressed as formula I. The preparation method of the network polymer material comprises the following steps: step one, taking a halogen compound with a phthalazone structure as the raw materials and carrying out coupling reaction to generate a dinitrile monomer; and step two, taking the dinitrile monomer as the raw material and carrying out polymerization reaction to generate the network polymer with phthalazone and s-triazine structures. A super capacitor taking the material as the electrode has the characteristics of high specific capacitance and excellent cycling stability; when the current density is 0.1A / g, the specific capacitance is 302F / g; the specific capacitance of the super capacitor is free of attenuation after 30000 charging and discharging cycles.

Description

Technical field [0001] The invention belongs to the field of materials science, and relates to a network polymer material for super capacitor electrodes and a preparation technology thereof, and in particular to a network polymer material containing nitrogen and oxygen atoms for super capacitor electrodes and a preparation method thereof. Background technique [0002] As a unique energy storage device, supercapacitors have both the characteristics of traditional dielectric capacitors and batteries. They have high power density, fast charge and discharge, long service life, good temperature characteristics, maintenance-free, and environmentally friendly characteristics. Regarded as the most promising new green energy in this century. [0003] Supercapacitors have become one of the research hotspots in the interdisciplinary fields of materials, electricity, electronics, physics, and chemistry. The main research goal is to prepare low-cost electrode materials with high energy density...

Claims

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Application Information

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IPC IPC(8): C08G73/06H01G11/48
CPCY02E60/13C08G73/0694C08G73/0644C08G73/065H01G11/48
Inventor 蹇锡高胡方圆王锦艳刘程张守海
Owner DALIAN UNIV OF TECH
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