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Polypyrrole nanosphere@titanium carbide composite material as well as preparation method and application thereof

A polypyrrole nanometer and composite material technology, applied in the direction of hybrid capacitor electrodes, etc., can solve the problems of affecting the cyclic stability of materials, easy transformation of materials as insulators, expansion and contraction of polymers, etc. Environmentally friendly, full contact effect

Inactive Publication Date: 2020-11-03
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But it also has disadvantages: when the voltage window is higher than a certain amount, the material is likely to face degradation; when it is lower than a certain potential window, the material is easily transformed into an insulator
Moreover, it is easy to cause the expansion and contraction of the polymer during the ion deintercalation process, which affects the cycle stability of the material and limits its application.

Method used

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  • Polypyrrole nanosphere@titanium carbide composite material as well as preparation method and application thereof
  • Polypyrrole nanosphere@titanium carbide composite material as well as preparation method and application thereof
  • Polypyrrole nanosphere@titanium carbide composite material as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Step 1, lamellar Ti 3 C 2 preparation of

[0043] Weigh 2g of LiF and dissolve it in a 50mL polytetrafluoroethylene beaker containing 20mL of 9M HCl (15mL of concentrated HCl+5mL of water), stir for 10min to make it evenly mixed, and slowly add 2g of Ti to the above mixture 3 AlC 2 , magnetically stirred for 24h. After the reaction, centrifuge and wash to pH > 6, dissolve the centrifuged precipitate in 300mL of ultrapure water, carry out vacuum deoxygenation for 2 hours, after completion of ultrasonication for 1 hour, centrifuge for 1 hour, and freeze-dry the supernatant for 48 hours to obtain ultra-thin Ti 3 C 2 Powder.

[0044] Step two, Ti 3 C 2 Preparation of @PPY composite nanospheres

[0045] Weigh 0.1g of polyvinyl alcohol (PVA) and 0.1g of sodium p-toluenesulfonate dissolved in 40mL of ultrapure water and mix evenly, then add 500mL of Py monomer to the above solution, stir at low temperature for 30min; then add 1.14g of persulfuric acid The APS solution...

Embodiment 2

[0047] Step 1, lamellar Ti 3 C 2 preparation of

[0048] Weigh 2g of LiF and dissolve it in a 50mL polytetrafluoroethylene beaker containing 20mL of 9M HCl (15mL of concentrated HCl+5mL of water), stir for 10min to make it evenly mixed, and slowly add 2g of Ti to the above mixture 3 AlC 2 , magnetically stirred for 24h. After the reaction, centrifuge and wash to pH > 6, dissolve the centrifuged precipitate in 300mL of ultrapure water, carry out vacuum deoxygenation for 2 hours, after completion of ultrasonication for 1 hour, centrifuge for 1 hour, and freeze-dry the supernatant for 48 hours to obtain ultra-thin Ti 3 C 2 Powder.

[0049] Step two, Ti 3 C 2 Preparation of @PPY composite nanospheres

[0050] Weigh 0.1g of polyvinyl alcohol (PVA) and 0.1g of sodium p-toluenesulfonate dissolved in 40mL of ultrapure water and mix evenly, then add 500mL of Py monomer to the above solution, stir at low temperature for 30min; then add 1.14g of persulfuric acid The APS solution...

Embodiment 3

[0055] Step 1, lamellar Ti 3 C 2 preparation of

[0056] Weigh 2g of LiF and dissolve it in a 50mL polytetrafluoroethylene beaker containing 20mL of 9M HCl (15mL of concentrated HCl+5mL of water), stir for 10min to make it evenly mixed, and slowly add 2g of Ti to the above mixture 3 AlC 2 , magnetically stirred for 24h. After the reaction, centrifuge and wash to pH > 6, dissolve the centrifuged precipitate in 300mL of ultrapure water, carry out vacuum deoxygenation for 2 hours, after completion of ultrasonication for 1 hour, centrifuge for 1 hour, and freeze-dry the supernatant for 48 hours to obtain ultra-thin Ti 3 C 2 Powder.

[0057] Step two, Ti 3 C 2 Preparation of @PPY composite nanospheres

[0058] Weigh 0.1g of polyvinyl alcohol (PVA) and 0.1g of sodium p-toluenesulfonate dissolved in 40mL of ultrapure water and mix evenly, then add 500mL of Py monomer to the above solution, stir at low temperature for 30min; then add 1.14g of persulfuric acid The APS solution...

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Abstract

The invention also discloses a polypyrrole nanosphere@titanium carbide composite material as well as a preparation method and application thereof. According to the preparation method, PPy and ultrathin titanium carbide are compounded by using a low-temperature chemical oxidation method to obtain a Ti3C2@PPy composite nanosphere material serving as an electrode material of a supercapacitor. An in-situ polymerization method is simple to operate, is environment-friendly and efficient, the nano spherical PPy and the layered ultrathin Ti3C2 are compounded, so that the nano spherical PPy and the layered ultrathin Ti3C2 can be in more sufficient contact, the specific surface area is larger, the particle transmission and diffusion are better facilitated, and the application performance is improved. According to the present invention, the Ti3C2@PP Ti3C2 nanospheres are mainly prepared by adopting a low-temperature chemical oxidation method, the preparation method is simple, convenient, efficient, green and environment-friendly, the Ti3C2@PPy with a spherical structure has the larger specific surface area, the electron transmission and ion diffusion are better facilitated, and the application range is wider; and the precursor is prepared for the further development and application in the fields of supercapacitors, lithium ion batteries, electronic induction products and the like.

Description

【Technical field】 [0001] The invention belongs to the field of supercapacitor materials, and in particular relates to a polypyrrole nanosphere@titanium carbide composite material and its preparation method and application. 【Background technique】 [0002] In recent years, with the intensification of environmental problems and severe energy consumption, people are eager to develop green and clean renewable energy. In order to ensure the continuity of these renewable energy, the research and development of new energy storage equipment is urgent. Among many energy storage devices, supercapacitors are favored by scientific researchers because of their advantages such as high safety, outstanding cycle stability, simple assembly, high power performance, and good reversibility. At present, supercapacitors have been widely used in many fields such as industrial power, electronic sensors, hydrogen storage systems, portable products, memory storage systems, and energy management. There...

Claims

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Application Information

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IPC IPC(8): H01G11/24H01G11/30H01G11/48
CPCH01G11/24H01G11/30H01G11/48Y02E60/13
Inventor 武文玲柴玉梅卫丹朱建锋方园方媛王雷张彪
Owner SHAANXI UNIV OF SCI & TECH
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