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

Preparation method of asymmetric supercapacitor

A supercapacitor, asymmetric technology, applied in the field of preparation of asymmetric supercapacitors, can solve problems such as low energy density, and achieve the effect of improving energy density and power density, large surface area, and wide voltage range

Active Publication Date: 2017-05-17
吴中区穹窿山倪源交通器材经营部
View PDF3 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Low energy density has been the Achilles' heel of supercapacitors

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 asymmetric supercapacitor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A preparation method for an asymmetric supercapacitor, comprising the following steps:

[0022] (1) Take 2mL of CuCl with a concentration of 0.1M 2 solution, take 1 mL of KOH solution with a concentration of 2M and add it to 40 mL of deionized water, stir for 30 s, add 1 mL of ascorbic acid solution with a concentration of 0.2 M, stir for 20 min, centrifuge the brick red precipitate, wash, and vacuum dry at 60 ° C for 2 h to obtain For cuprous oxide powder, add 60mg of cuprous oxide and 850mg of PVP to a mixed solution of 50mL of water and ethanol in turn, after ultrasonication for 5min, add CoCl 2 solution, stirred for 5min, and added 20mL of 1.0M Na 2 S 2 o 3 solution, after stirring for 30 minutes, the product was centrifuged, washed, and dried at 60°C for 2 hours to obtain pink cobalt hydroxide;

[0023] (2) Adding cobalt hydroxide to 50mL Na with a concentration of 0.02M 2 In the S solution, after the ultrasonic dispersion was uniform, it was transferred into ...

Embodiment 2

[0028] A preparation method for an asymmetric supercapacitor, comprising the following steps:

[0029] (1) Take 1mL of CuCl with a concentration of 0.1M 2 Solution, take 1.5mL KOH solution with a concentration of 2M and add it to 40mL deionized water, stir for 60s, add 1mL ascorbic acid solution with a concentration of 0.1M, stir for 15min, centrifuge the brick red precipitate, wash, and vacuum dry at 50°C for 5h. To obtain cuprous oxide powder, add 60mg of cuprous oxide and 800mg of PVP to the mixed solution of 50mL of water and ethanol in turn, after ultrasonication for 15min, add CoCl 2 solution, stirred for 5min, and added 20mL of 1.0M Na 2 S 2 o 3 solution, after stirring for 20 minutes, the product was centrifuged, washed, and dried at 50°C for 2 hours to obtain pink cobalt hydroxide;

[0030] (2) Add cobalt hydroxide to 50mL Na with a concentration of 0.04M 2 In the S solution, after the ultrasonic dispersion was uniform, it was transferred into a 60mL autoclave, h...

Embodiment 3

[0035] A preparation method for an asymmetric supercapacitor, comprising the following steps:

[0036] (1) Take 1 mL of CuCl with a concentration of 0.2M 2 solution, add 2 mL of KOH solution with a concentration of 1.5M into 35 mL of deionized water, stir for 90 s, add 2 mL of ascorbic acid solution with a concentration of 0.1 M, stir for 15 min, centrifuge the orange precipitate, wash, and vacuum dry at 50 °C for 2 h to obtain For cuprous oxide powder, add 50mg of cuprous oxide and 800mg of PVP to a mixed solution of 50mL of water and ethanol in turn, after ultrasonication for 20min, add CoCl 2 solution, stirred for 10min, and added 20mL of 1.0M Na 2 S 2 o3 solution, after stirring for 10 minutes, the product was centrifuged, washed, and dried at 80°C for 2 hours to obtain pink cobalt hydroxide;

[0037] (2) Adding cobalt hydroxide to 50mL Na with a concentration of 0.05M 2 In the S solution, after the ultrasonic dispersion was uniform, it was transferred into a 60mL auto...

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
Concentrationaaaaaaaaaa
Concentrationaaaaaaaaaa
Concentrationaaaaaaaaaa
Login to View More

Abstract

The invention provides a preparation method of an asymmetric supercapacitor, wherein the preparation method relates to the technical field of supercapitors. According to the preparation method, cuprous oxide is used for preparing a sacrificial template; cobaltous hydroxide is obtained through normal-temperature mixing; and sulfuration is performed on the cobaltous hydroxide according to a hydrothermal method for obtaining hollow cobaltous sulfide powder. The hollow structure can reduce diffusion distance of ions and improves utilization rate of active substances, thereby improving specific capacitance of a material. The cobaltous sulfide powder is used as an anode and a porous carbon material is used as a cathode, and the asymmetric supercapacitor is obtained through assembling. The supercapacitor has a wide potential window. Furthermore energy density and power density of the supercapacitor are improved.

Description

technical field [0001] The invention relates to the technical field of supercapacitors, in particular to a method for preparing an asymmetric supercapacitor. Background technique [0002] Supercapacitors, also known as electrochemical capacitors, have the characteristics of both lithium-ion batteries and traditional electrolytic capacitors. They can be charged and discharged in an instant, and can meet special requirements such as high-power or even ultra-high fields. They have a long cycle life and high safety and reliability. , in transportation, mobile communications, information technology, aerospace and defense technology and other fields, has a huge application prospect. According to the different energy storage mechanisms, the electrode materials used for supercapacitors can be divided into two categories: one is based on the electric double layer electrode material with a high specific surface area carbon material and the electrolyte interface to store charges; the o...

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): H01G11/86H01G11/30H01G11/24H01G11/32
CPCY02E60/13H01G11/86H01G11/24H01G11/30H01G11/32
Inventor 潘虹
Owner 吴中区穹窿山倪源交通器材经营部
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