Unlock instant, AI-driven research and patent intelligence for your innovation.

A method for in-situ oxidation of aniline on the surface of manganese dioxide electrode

A manganese dioxide electrode and in-situ oxidation technology, which is applied in the manufacture of hybrid capacitor electrodes, hybrid/electric double layer capacitors, etc., can solve the problems of complex process and high cost, and achieve the advantages of easy preparation, high specific capacitance and improved cycle performance Effect

Active Publication Date: 2018-08-21
GUANGXI UNIV
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the method of synthesizing conductive polyaniline composite electrode material is generally to use electrodeposition method, which is complicated in process and high in cost, such as CN201110271799, CN201410195022, and there is no patented method to directly use the surface of manganese dioxide electrode to in-situ oxidize aniline

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
  • A method for in-situ oxidation of aniline on the surface of manganese dioxide electrode
  • A method for in-situ oxidation of aniline on the surface of manganese dioxide electrode

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A method for in-situ oxidation of aniline on the surface of manganese dioxide electrode includes the following steps:

[0029] (1) The electrochemically active MnO 2 , Conductive agent and binder are prepared into electrode slurry; the MnO 2 The conductive agent is acetylene black, the binder is PVDF, and the MnO 2 , The mass ratio of conductive agent and binder is 15:1:4;

[0030] (2) Evenly smear the electrode slurry obtained in step (1) on the graphite paper, the smearing area is 1cm 2 Made into electrodes;

[0031] (3) Prepare an acidic solution with a concentration of 0.5M; the acidic solution is an aqueous mineral acid solution; the inorganic acid is sulfuric acid;

[0032] (4) Take the aniline monomer and add it to the acidic solution obtained in step (3), stir to dissolve the aniline monomer to obtain an acidic solution containing aniline; the added amount of the aniline monomer is 0.1 mL; the aniline monomer The volume ratio with acidic solution is 1:20;

[0033] (5) So...

Embodiment 2

[0035] A method for in-situ oxidation of aniline on the surface of manganese dioxide electrode includes the following steps:

[0036] (1) The electrochemically active MnO 2 , Conductive agent and binder are prepared into electrode slurry; the conductive agent is carbon fiber, the binder is PF acid-resistant binder, and the MnO 2 The mass ratio of conductive agent and binder is 11:0.1:2.5;

[0037] (2) Use the electrode slurry obtained in step (1) to make an electrode;

[0038] (3) Prepare an acidic solution with a concentration of 1M; the acidic solution is an aqueous solution of an organic acid; the organic acid is acetic acid;

[0039] (4) Take the aniline monomer and add it to the acidic solution obtained in step (3), stir to dissolve the aniline monomer to obtain an acidic solution containing aniline; the added amount of the aniline monomer is 1.5 mL; the aniline monomer The volume ratio with acidic solution is 1:2;

[0040] (5) Immerse the electrode obtained in step (2) in the aci...

Embodiment 3

[0041] Example 3 : A method for in-situ oxidation of aniline on the surface of manganese dioxide electrode, including the following steps:

[0042] (1) The electrochemically active MnO 2 , A conductive agent and a binder are prepared into electrode slurry; the conductive agent is Ketjenblack EC300J, the binder is polytetrafluoroethylene (PTFE), the MnO 2 , The mass ratio of conductive agent and binder is 19:1.4:7;

[0043] (2) Use the electrode slurry obtained in step (1) to make an electrode;

[0044] (3) Prepare an acidic solution with a concentration of 0.5M; the acidic solution is an aqueous inorganic acid solution; the inorganic acid is nitric acid;

[0045] (4) Take the aniline monomer and add it to the acidic solution obtained in step (3), stir to dissolve the aniline monomer to obtain an acidic solution containing aniline; the added amount of the aniline monomer is 1.0 mL; the aniline monomer The volume ratio with acidic solution is 1:10;

[0046] (5) Immerse the electrode ob...

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 method of carrying out in-situ oxidation for aniline on a surface of a manganese dioxide electrode. The method comprises the following steps of (1) preparing electrode slurry by using MnO2 with electrochemical activity, a conductive agent and a binder; (2) preparing an electrode by using the electrode slurry obtained in the step (1); (3) preparing an acid solution with the concentration of 0.3-1 M; (4) taking an aniline monomer, adding the aniline monomer into the acid solution obtained in the step (3) and dissolving the aniline monomer by mixing to obtain an aniline-containing acid solution; and (5) soaking the electrode obtained in the step (2) into the aniline-containing acid solution obtained in the step (4) for 0-60 s, then taking out the electrode, drying the electrode in a drying oven for 0.17-6 h, then taking out the electrode, soaking the electrode again, then drying, and repeating the operations mentioned in the step (5) for 1-8 times to obtain the electrode with high specific capacitance. The super-capacitor electrode material prepared by the method has relatively high specific capacitance.

Description

Technical field [0001] The invention belongs to the technical field of electrode material preparation, and specifically relates to a method for in-situ oxidation of aniline on the surface of a manganese dioxide electrode to improve specific capacitance performance. Background technique [0002] Electrochemical supercapacitors are widely regarded as an important energy storage device. The charge storage mechanism is a reversible charge and discharge process, which can be divided into two types: electric double layer capacitance and pseudocapacitance. Flexible solid supercapacitors have high power density, long cycle life and higher energy density, and have broad development prospects in the field of portable energy storage devices. Recently, some people have used electrodeposition methods to deposit active materials (such as RuO 2 , MnO 2 , V 2 O 5 , NiOH or graphene nanosheets) are attached to the conductive fiber supercapacitors to obtain high-performance flexible supercapacitor...

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 Patents(China)
IPC IPC(8): H01G11/86H01G11/30H01G11/46H01G11/48
CPCY02E60/13
Inventor 叶晴岚王凡许雪棠
Owner GUANGXI UNIV