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Method for preparing electrode material by using twin polymerization

A technology for preparing electrodes and polymerization methods, which is applied in the fields of hybrid capacitor electrodes, carbon preparation/purification, and hybrid/electric double layer capacitor manufacturing, etc. It can solve the problems of poor rate cycle performance, poor conductivity, and high cost, and achieve good rate performance , good cycle performance and large specific capacity

Active Publication Date: 2017-06-13
SOUTH CENTRAL UNIVERSITY FOR NATIONALITIES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, inorganic oxide electrode materials (mainly metal oxides) include RuO 2 、TiO 2 , SnO 2 etc., its main feature is that the electrochemical devices made of this material have high specific energy and specific power, but the disadvantages are that the cost of the material is too high, the conductivity is poor, the rate and cycle performance are poor, and heavy metals are not easy to recycle.
Conductive polymer materials include PPY, PTH, PAS, PFPT and other P-type or N-type or P / N-type doped materials. The advantage of this electrode is that it has a high specific capacitance and a small internal resistance, but its However, there are some restrictions on cycle performance and stability

Method used

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  • Method for preparing electrode material by using twin polymerization
  • Method for preparing electrode material by using twin polymerization
  • Method for preparing electrode material by using twin polymerization

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Preparation of sulfur-doped porous carbon materials by twin polymerization, according to the following steps;

[0029] ① Measure 8.55 g of highly purified liquid tetrathienyloxysilane and perform ultrasonic treatment for 15 minutes in an ultrasonic instrument with a power of 80-160 W, then put it into a 50 mL round bottom flask, and stir at room temperature.

[0030] ②Measure 442μL ([M] / [I]=5) of trifluoroacetic acid and dissolve it in 19mL of dichloromethane, stir well to make it evenly mixed, and slowly add the solution dropwise to the solution containing tetrathienyl In the round-bottomed flask of oxysilane, add it dropwise in about half an hour.

[0031] ③Set up the condensation reflux device, heat and stir the twin monomers added with the catalyst at 80°C for 3 hours to obtain the product A mixture, then take out the product A, let it stand at room temperature, and add a large amount of dichloromethane to extract after cooling , take the lower layer of the cloudy ...

Embodiment 2

[0036] Preparation of porous carbon material by twin polymerization, according to the following steps;

[0037]① Measure 2.5g of highly purified liquid tetrafurfuryloxysilane and perform ultrasonic treatment for 15 minutes in an ultrasonic instrument with a power of 80-160W, then put it into a 50mL round bottom flask, and stir at room temperature.

[0038] ② Measure 100μL ([M] / [I]=10) of trifluoroacetic acid and dissolve it in 4.43mL of dichloromethane, stir well to make it evenly mixed, and slowly add the solution dropwise to the solution containing tetrathiophene In the round-bottomed flask of oxysilane, add it dropwise in about half an hour.

[0039] ③Set up the condensation reflux device, and heat and stir the twin monomers added with the catalyst at 90°C for 2.5 hours to obtain the product A mixture, then take out the product A, let it stand at room temperature, and add a large amount of dichloromethane after cooling After extraction, the lower layer of the cloudy liquid...

Embodiment 3

[0045] Preparation of a composite material of titanium dioxide and sulfur-doped carbon by twinning polymerization is carried out as follows;

[0046] ① Measure 4.5 g of highly purified 1,2,3,4-tetrathienyloxycyclotetratitanium and perform ultrasonic treatment for 15 minutes in an ultrasonic instrument with a power of 80-160W, then put it into a 50mL round bottom flask, and Stir at room temperature.

[0047] ②Using 1,2,3,4-tetrathienyloxycyclotetratitanium as a monomer and trifluoromethanesulfonic anhydride as an initiator, take 510 μL of trifluoromethanesulfonic anhydride ([M] / [I]=5) to dissolve and Disperse evenly in 10mL of toluene, then slowly add the solution dropwise into the round bottom flask filled with 1,2,3,4-tetrathienyloxycyclotetratitanium, and the dropwise addition is completed in about half an hour.

[0048] ③Stir the twin monomer with the catalyst added at room temperature for 16 hours to obtain a product A mixture, then take out the product A, add a large amo...

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Abstract

The invention discloses a method for preparing electrode material by using twin polymerization. Twin monomers are used as raw materials, acid is added for catalysis, the twin monomers are polymerized to obtain a mixture in which two polymers are interlaced with each other together, and after being extracted and dried, the mixture is subjected to carbonization in an anaerobic environment to obtain a composite electrode material composed of carbon materials and metal oxides, or the mixture is subjected to calcination in an aerobic environment to remove carbon elements so as to obtain a pure metal oxide electrode material; The twin monomers are formed by chemical bonding of organic polymer precursors and inorganic oxide precursors. The composite electrode material composed of the carbon materials and the metal oxides and prepared by the method has the advantages of being large in specific capacitance, good in rate performance, good in electrical conductivity, good in cycle performance and the like, and has good prospects for development in the field of electrochemistry. The metal oxides in the composite electrode material can also be removed to obtain the pure carbon materials, or the composite electrode material can be carbonized in air to obtain pure metal oxides.

Description

technical field [0001] The invention relates to a method for preparing electrode materials, in particular to a method for preparing electrode materials by twin polymerization. Background technique [0002] With the depletion of fossil energy such as oil and coal, energy pollution is approaching, and the problem of energy crisis is becoming more and more serious. In such a background, it is urgent to request the development of new energy materials. In particular, electrochemical energy storage and conversion technology, as an emerging technology to deal with the energy crisis, has attracted attention due to its environmental friendliness and high efficiency. The core of electrochemical energy storage and conversion technology lies in electrochemical devices, and the core of electrochemical devices lies in electrode materials. [0003] Electrode materials mainly include inorganic oxide electrode materials, conductive polymer electrode materials and carbon materials. Among t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/86H01G11/24H01G11/30H01G11/34H01G11/36H01G11/44H01G11/46C01B32/05
CPCY02E60/13H01G11/86C01P2004/04C01P2006/16H01G11/24H01G11/30H01G11/34H01G11/36H01G11/44H01G11/46
Inventor 杨应奎陆贇李冉高鹏远张爱清
Owner SOUTH CENTRAL UNIVERSITY FOR NATIONALITIES