Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Preparation method of MnO<2>/Ti<3>C<2>T<x>Mxene flexible supercapacitor electrode material

A technology for supercapacitors and electrode materials, applied in hybrid capacitor electrodes, nanotechnology for materials and surface science, nanotechnology, etc., can solve problems such as poor conductivity, limited energy density and durability, and achieve good conductivity, Effect of high energy density and excellent cycle stability

Pending Publication Date: 2018-11-13
重庆化工职业学院 +1
View PDF6 Cites 13 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the invention is to solve the problem of MnO 2 As an electrode material for supercapacitors, there are problems of poor conductivity, limited energy density and durability

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparation method of MnO&lt;2&gt;/Ti&lt;3&gt;C&lt;2&gt;T&lt;x&gt;Mxene flexible supercapacitor electrode material
  • Preparation method of MnO&lt;2&gt;/Ti&lt;3&gt;C&lt;2&gt;T&lt;x&gt;Mxene flexible supercapacitor electrode material
  • Preparation method of MnO&lt;2&gt;/Ti&lt;3&gt;C&lt;2&gt;T&lt;x&gt;Mxene flexible supercapacitor electrode material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] 1)Ti 3 C 2 T x Preparation of:

[0030] 1.1) Add 2g LiF to 20ml HCl and stir until clear to prepare corrosion solution.

[0031] 1.2) Add 2g Ti to the solution in step 1.1) 3 AlC 2 powder, the solution was heated to 40°C for 24 hours, then washed 5 times with deionized water, and centrifuged until the pH of the supernatant was about 6.

[0032] 1.3) The centrifuged solid in step 1.2) was vacuum-dried at 60°C for 12 hours to obtain Ti 3 C 2 Tx powder.

[0033] 2) MnO 2 / Ti 3 C 2 T x Preparation of composite materials:

[0034] 2.1) Weigh 0.36mmol MnCl 2 4H 2 O, 50 mg Ti from step 1) 3 C 2 T x , Disperse the two in 50ml of isopropanol, sonicate for 1-3h to obtain a stable suspension, stir and heat the suspension to 80-100°C.

[0035] 2.2) 0.24 mmol KMnO 4 Dissolve in 5ml deionized water to make the reacted MnO 2 and Ti 3 C 2 T x The theoretical mass ratio is 1.0; then quickly added to the suspension in step 2.1), condensed and refluxed for 20-40min,...

Embodiment 2

[0038] Change MnCl 2 4H 2 The amount of O is 0.086mmol, KMnO 4 The amount is 0.057mmol, so that the reacted MnO 2 and Ti 3 C 2 T x The theoretical mass ratio is 0.25; other conditions are the same as in Example 1, the obtained MnO 2 / Ti 3 C 2 T x The electrode material is made into a flexible supercapacitor for electrochemical performance measurement, and the measured specific capacitance is 8.5mF cm -2 .

Embodiment 3

[0040] Change MnCl 2 4H 2 The amount of O is 0.17mmol, KMnO 4 The amount is 0.12mmol, so that the MnO after the reaction 2 and Ti 3 C 2 T x The theoretical mass ratio is 0.5; other conditions are the same as in Example 1, the obtained MnO 2 / Ti 3 C 2 T x The electrode material was made into a flexible supercapacitor for electrochemical performance measurement, and the measured specific capacitance was 9.2mF cm -2 .

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a preparation method of a MnO<2>/Ti<3>C<2>T<x>Mxene flexible supercapacitor electrode material, and belongs to the technical field of energy storage materials. According to thepreparation method, MnO<2>and Ti<3>C<2>T<x>Mxene are combined to prepare the flexible supercapacitor electrode material with high electrochemical performance and mechanical property. Specifically, LiF and HCl are used as corrosive liquids, and an Al layer of Ti<3>AlC<2> is corroded to obtain Ti<3>C<2>T<x>; then MnCl<2>.4H<2>O and Ti<3>C<2>T<x> are mixed and heated at a certain mass ratio to be subjected to a redox reaction under the effect of KMnO<4> to enable the generated MnO<2> nano rods to be deposited on Ti<3>C<2>T<x>; and finally, washing and drying are carried out to obtain the flexible supercapacitor electrode material. According to the invention, MnO<2>with excellent specific capacitance is utilized, and specific to the defect that the conductive performance thereof is poor, an in-situ deposition method is adopted; the MnO<2> nano rods are deposited on the Ti<3>C<2>T<x>Mxene material with excellent conductivity to obtain the flexible MnO<2>/Ti<3>C<2>T<x>Mxene composite electrode material, so that not only rapid transmission of electrons is ensued, but also the resistance of the system is lowered; and the capacitor prepared by the electrode material has the characteristicsof high flexibility, excellent cycling stability, high energy density and the like.

Description

technical field [0001] The present invention relates to a kind of MnO 2 / Ti 3 C 2 T x The invention discloses a method for preparing an Mxene supercapacitor electrode material, which belongs to the technical field of energy storage materials, and in particular relates to a method for preparing a flexible supercapacitor electrode material. The technical feature of this method is that the MnO with high theoretical specific capacitance 2 Material and Ti with good conductivity and good flexibility 3 C 2 T x Mxene materials are compounded to prepare flexible supercapacitors with excellent performance. Background technique [0002] As a new type of energy storage device between batteries and traditional capacitors, supercapacitors have the characteristics of high power density, high charge and discharge efficiency, good cycle stability, and environmental protection, so they are widely used in various fields. However, the low energy density has become an important factor re...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/30H01G11/46H01G11/24B82Y30/00B82Y40/00
CPCH01G11/24H01G11/30H01G11/46B82Y30/00B82Y40/00Y02E60/13
Inventor 唐成黎江寒梅张莉梅董立春魏顺安谭陆西秦莉晓
Owner 重庆化工职业学院
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com