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

Technological method for electro-deposition of MnO2 on graphite substrate with cyclic voltammetry

A technology of cyclic voltammetry and process method is applied in the field of supercapacitor preparation, which can solve the problems of difficult to control sintering temperature, high cost of thermal decomposition, harm to the environment, etc., and achieves the effects of low solution cost, low price and fast deposition speed.

Inactive Publication Date: 2015-01-21
SHENYANG POLYTECHNIC UNIV
View PDF2 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The thermal decomposition method has the disadvantages of high cost, complex process, difficult control of sintering temperature and environmental hazards

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
  • Technological method for electro-deposition of MnO2 on graphite substrate with cyclic voltammetry
  • Technological method for electro-deposition of MnO2 on graphite substrate with cyclic voltammetry
  • Technological method for electro-deposition of MnO2 on graphite substrate with cyclic voltammetry

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] Electrodeposition of MnO on Graphite Substrates by Cyclic Voltammetry 2 Process method, the steps are as follows:

[0051] Step 1. Acetone degreasing: remove the oil from the graphite matrix without changing the size of the graphite, use acetone to clean the graphite surface, and then use distilled water to clean;

[0052] Step 2. Activation: The composition of the activation solution is: the graphite activation solution is nitric acid with a mass percentage of 32%, the graphite is completely immersed in the activation solution, and the activation time is 4h;

[0053] Step 3. Activation: Submerge the activated substrate in the activation solution using a three-electrode system. The composition of the activation solution is: sulfuric acid 0.15mol / L; the temperature is 20°C, the scan rate is 0.10V / s, and the scan potential is -1.1~2.2 V, the number of cycles is 60 times;

[0054] Step 4. Deposition: After activation, place in the electrodeposition solution, the composit...

Embodiment 2

[0060] Electrodeposition of MnO on Graphite Substrates by Cyclic Voltammetry 2 Process method, the steps are as follows:

[0061] Step 1. Acetone degreasing: remove the oil from the graphite matrix without changing the size of the graphite, use acetone to clean the graphite surface, and then use distilled water to clean;

[0062] Step 2. Activation: The composition of the activation solution is: the graphite activation solution is nitric acid with a mass percentage of 32%, the graphite is completely immersed in the activation solution, and the activation time is 4h;

[0063] Step 3. Activation: Submerge the activated substrate in the activation solution using a three-electrode system. The composition of the activation solution is: sulfuric acid 0.15mol / L; the temperature is 30°C, the scan rate is 0.10V / s, and the scan potential is -1.1~2.2 V, the number of cycles is 60 times;

[0064] Step 4. Deposition: After activation, place in the electrodeposition solution, the composit...

Embodiment 3

[0070] Electrodeposition of MnO on Graphite Substrates by Cyclic Voltammetry 2 Process method, the steps are as follows:

[0071] Step 1. Acetone degreasing: remove the oil from the graphite matrix without changing the size of the graphite, use acetone to clean the graphite surface, and then use distilled water to clean;

[0072] Step 2. Activation: The composition of the activation solution is: the graphite activation solution is nitric acid with a mass percentage of 32%, the graphite is completely immersed in the activation solution, and the activation time is 4h;

[0073] Step 3. Activation: Submerge the activated substrate in the activation solution using a three-electrode system. The composition of the activation solution is: sulfuric acid 0.15mol / L; the temperature is 25°C, the scan rate is 0.10V / s, and the scan potential is -1.1~2.2 V, the number of cycles is 60 times;

[0074] Step 4. Deposition: After activation, place in the electrodeposition solution, the composit...

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

PropertyMeasurementUnit
Capacitanceaaaaaaaaaa
Login to View More

Abstract

The invention relates to a technological method for electro-deposition of MnO2 on a graphite substrate with cyclic voltammetry, and belongs to the technical field of super-capacitor manufacturing. The technical steps are that acetone oil removal is performed firstly, excitation is performed then, activation is performed after excitation, and then electro-deposition is performed after activation. The bonding force of a manufactured material and the phase homogeneity are higher, grains are fine and dense, the method has the advantages that the preparation is easy, the conditions are mild and the like, the MnO2 electro-deposition technology is low in cost, environment-friendly and harmless and has a wide application prospect.

Description

technical field [0001] The invention belongs to the technical field of supercapacitor preparation, in particular to a method of electrodepositing MnO on a graphite substrate by cyclic voltammetry 2 process method. Background technique [0002] Supercapacitor, also known as electrochemical capacitor, is a new type of energy storage device between conventional capacitors and secondary batteries. It has both high power density of conventional capacitors and high energy density of secondary batteries, high power, and long cycle life. safety and environmental friendliness. It can be widely used in various high-tech fields such as information technology, aerospace, national defense technology, and energy use. For example, a supercapacitor and a rechargeable battery form a composite power system, which can meet the high power requirements of electric vehicles when starting, speeding up, and climbing. It can also prolong the cycle life of the battery and realize the optimization ...

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
IPC IPC(8): H01G9/042
Inventor 孙雅茹张代乐赵帅张薇薇李海全
Owner SHENYANG POLYTECHNIC UNIV
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