Check patentability & draft patents in minutes with Patsnap Eureka AI!

Preparation method for NiCo2O4/MnO2/AC water system asymmetric super capacitor

A supercapacitor, asymmetric technology, applied in the direction of hybrid/electric double layer capacitor manufacturing, hybrid capacitor electrodes, etc., can solve the problem of low energy density, achieve high energy density, increase the voltage window, and improve the effect of energy density

Inactive Publication Date: 2014-02-26
DONGHUA UNIV
View PDF3 Cites 17 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a NiCo 2 o 4 / MnO 2 / AC water-based asymmetric supercapacitor preparation method, this invention aims at the defects of low energy density of traditional capacitors, and provides an assembly method for asymmetric supercapacitors to improve the voltage window and further increase the energy density

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 for NiCo2O4/MnO2/AC water system asymmetric super capacitor
  • Preparation method for NiCo2O4/MnO2/AC water system asymmetric super capacitor
  • Preparation method for NiCo2O4/MnO2/AC water system asymmetric super capacitor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] 1) NiCo 2 o 4 / MnO 2 Preparation of:

[0029] A Put the foam nickel of appropriate size into a solution containing 1M hydrochloric acid for ultrasonic cleaning, the purpose is to remove the nickel oxide on the surface of the foam nickel.

[0030] B takes by weighing raw material nickel nitrate hexahydrate (Ni(NO 3 ) 2 ·6H 2 O), cobalt nitrate hexahydrate (Co(NO 3 ) 2 ·6H 2 O) and urea were dissolved in water and stirred to obtain a mixed solution in which Ni(NO 3 ) 2 ·6H 2 O and Co(NO 3 ) 2 ·6H 2 O molar ratio is 1:2, urea quality is 0.6g

[0031] C pour the above mixed solution into the polytetrafluoroethylene hydrothermal reaction kettle, keep 80% filling degree, and put a piece of cleaned foamed nickel, put the hydrothermal reaction kettle into the blast drying box, 90 React under hydrothermal conditions at -150°C for 3-12 hours, then cool the reactor to room temperature.

[0032] D Take out the pink nickel foam, wash it with deionized water and ethan...

Embodiment 2

[0038] 1) NiCo 2 o 4 / MnO 2 Preparation of:

[0039] A Put the foam nickel of appropriate size into a solution containing 1M hydrochloric acid for ultrasonic cleaning, the purpose is to remove the nickel oxide on the surface of the foam nickel.

[0040] B takes by weighing raw material nickel nitrate hexahydrate (Ni(NO 3 ) 2 ·6H 2 O), cobalt nitrate hexahydrate (Co(NO 3 ) 2 ·6H 2 O) and urea were dissolved in water and stirred to obtain a mixed solution in which Ni(NO 3 ) 2 ·6H 2 O and Co(NO 3 ) 2 ·6H 2 The ratio of O moles is 1:2, and the quality of urea is 1.5g.

[0041] C pour the above mixed solution into the polytetrafluoroethylene hydrothermal reaction kettle, keep 80% filling degree, and put a piece of cleaned foamed nickel, put the hydrothermal reaction kettle into the blast drying box, 90 React under hydrothermal conditions at -150°C for 3-12 hours, then cool the reactor to room temperature.

[0042] D Take out the pink nickel foam, wash it with deioni...

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 relates to a preparation method for a NiCo2O4 / MnO2 / AC water system asymmetric super capacitor. The method comprises: taking a NiCo2O4 / MnO2 core shell nano wire array growing on foam nickel as a super capacitor cathode material, coating AC on the foam nickel to obtain a super capacitor cathode material, adding a diaphragm, and taking a NaOH solution as an electrolyte to assemble the asymmetric super capacitor. The asymmetric super capacitor prepared by using the method provided by the invention has a voltage window of 1.5 V, and has the advantages of high energy intensity, use safety, low cost, environment friendliness, high cycle stability and the like.

Description

technical field [0001] The invention belongs to the field of preparation of supercapacitors, in particular to a NiCo 2 o 4 / MnO 2 / AC water system asymmetric supercapacitor preparation method. Background technique [0002] Due to the advantages of high power density, long cycle life, safety, and environmental friendliness, supercapacitors have great application prospects in portable electronic devices, hybrid electric vehicles and a large number of micro devices. However, to meet the energy density requirements of next-generation supercapacitors, the energy density of supercapacitors needs to be increased without sacrificing power density and cycle life. According to the following energy density formula: E=0.5C 2 , where C is the specific capacitance, and ΔV is the voltage window. An effective way to increase energy density is to increase the specific capacitance and voltage window. Although the organic electrolyte can effectively improve the voltage window, the weak io...

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): H01G11/32H01G11/46H01G11/84
CPCY02E60/13
Inventor 胡俊青徐开兵邹儒佳李博安磊
Owner DONGHUA UNIV
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com