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

Preparation method of supercapacitor cobaltous oxide electrode material

A technology for supercapacitors and electrode materials, which is applied in the fields of electrochemical science and energy, can solve problems such as limiting capacitance performance, and achieve the effects of stable working window, low manufacturing cost, and good stability

Inactive Publication Date: 2013-10-23
SHANGHAI UNIV
View PDF2 Cites 20 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the improvement of the capacitance performance is limited to a certain extent.

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 supercapacitor cobaltous oxide electrode material
  • Preparation method of supercapacitor cobaltous oxide electrode material
  • Preparation method of supercapacitor cobaltous oxide electrode material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Example 1: Using absolute ethanol as a solvent to prepare a cobalt oxide electrode and evaluate its capacitance performance

[0039] Cobalt nitrate and cetyltrimethylammonium bromide are mixed according to the mass ratio of 10:1, dissolved in 15ml of absolute ethanol; the solution is poured into a reaction kettle with a capacity of 25ml, and simultaneously in the reaction kettle Put in the foamed nickel substrate; put the reactor into a constant temperature oven at a temperature of 160°C, and the solvent heating time is 24 hours; after the solvent thermal reaction is completed, take out the black foamed nickel electrode from the reactor and rinse it with deionized water Clean; dry the cleaned electrode in a constant temperature oven at a temperature of 80°C for 6 hours to obtain a cobalt oxide electrode.

[0040]The cobalt oxide electrode was electrochemically tested, and the prepared cobalt oxide electrode was used as the working electrode, the saturated calomel electr...

Embodiment 2

[0041] Embodiment 2: Change the solvothermal time to the evaluation of the capacitive performance of cobalt oxide electrode

[0042] According to the preparation process of Example 1, cobalt nitrate and cetyltrimethylammonium bromide are in a mass ratio of 10:1, using absolute ethanol as a solvent, the temperature is 160 ° C, and the solvent heating time is 12 hours, and the same can be A cobalt oxide electrode was prepared. With 5mol / L KOH aqueous solution as the electrolyte, when the current density is 2A / g, the specific capacitance reaches 595.11F / g.

Embodiment 3

[0043] Example 3: Preparation of Cobalt Oxide Electrode and Evaluation of Capacitance Performance Using Isopropanol as Solvent

[0044] The solvent in the preparation process of Example 1 was replaced by isopropanol instead of absolute ethanol as the solvent, cobalt nitrate and cetyltrimethylammonium bromide in a mass ratio of 10:1, the temperature was 160°C, and the time For 24 hours, a cobalt oxide electrode was prepared. With 5mol / L KOH aqueous solution as the electrolyte, when the current density is 2A / g, the specific capacitance reaches 857.5F / g.

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
Current densityaaaaaaaaaa
Specific capacitanceaaaaaaaaaa
Specific capacitanceaaaaaaaaaa
Login to View More

Abstract

The invention discloses a preparation method of supercapacitor cobaltous oxide electrode material, belonging to the technical fields of electrochemical science and energy. The preparation method is characterized by taking foamed nickel as a substrate, cobalt nitrate and surface active agent as raw materials, and ethyl alcohol or isopropyl alcohol as a solvent, and the cobaltous oxide electrode material can be prepared by a solvothermal method. The preparation method has the advantages of being simple in production technology and equipment and low in preparation cost; the obtained cobaltous oxide electrode material has good stability and high specific capacitance.

Description

technical field [0001] The invention relates to a preparation method of a cobalt oxide electrode material for a supercapacitor, belonging to the field of electrochemical science and energy technology. Background technique [0002] In recent years, with the rapid development of various electronic digital products, people have put forward higher and higher requirements for the capacity and high-current discharge performance of batteries. Supercapacitors, also known as electrochemical capacitors, are a new type of energy storage element between traditional capacitors and batteries that have attracted widespread attention in recent years. It has the advantages of high power density of conventional capacitors and high energy density of rechargeable batteries. It can release large currents instantly, charge and discharge quickly, and has high charging efficiency, long cycle life, no memory effect, and no pollution to the environment. With the development of research on the power ...

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): C01G51/04H01G11/46
CPCY02E60/13
Inventor 陈益钢朱涛郑斯佳陈银儿
Owner SHANGHAI 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