Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Composite material for supercapacitor and preparation method thereof

A technology of supercapacitors and composite materials, which is applied in the manufacture of hybrid/electric double layer capacitors and electrodes of hybrid capacitors, etc. It can solve the problems of few reports and achieve the effect of wide source of raw materials and simple preparation process

Active Publication Date: 2014-01-29
一汽资产经营管理有限公司
View PDF5 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are not many reports on composite metal oxides for 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
  • Composite material for supercapacitor and preparation method thereof
  • Composite material for supercapacitor and preparation method thereof
  • Composite material for supercapacitor and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Such as Figure 1-3 As shown, weigh manganese carbonate, citric acid, zinc carbonate and activated carbon, manganese carbonate and citric acid are mixed uniformly in deionized water by magnetic stirring, add activated carbon water dispersion liquid with 20% manganese mass dispersed by ultrasound, and heat up to 60 °C , constant temperature reaction for 50min, add zinc carbonate, continue to stir for 2h, the ratio of manganese carbonate to zinc carbonate is 1:6. After cooling to room temperature, the obtained product was precipitated and filtered, washed with deionized water, and vacuum-dried at 60°C to constant weight; the obtained product was calcined at 700°C for 2 hours to obtain a composite material of zinc-manganese composite metal oxide and activated carbon. Composite materials, binder PTFE, and conductive agent VGCF are used to make positive electrodes, and activated carbon, binder PTFE, and conductive agents are used to make negative electrodes. The middle is se...

Embodiment 2

[0021] Weigh ferric oxide, activated carbon and zinc oxide in equal amounts and put them into a ball mill tank with a material to ball mass ratio of 1:20, and ball mill for 4 hours to obtain a composite material precursor. The precursor was calcined at 700°C for 2 hours to obtain a composite material of zinc-iron composite metal oxide and activated carbon. Composite materials, binder PTFE, and conductive agent VGCF are used to make positive electrodes, and activated carbon, binder PTFE, and conductive agents are used to make negative electrodes. The middle is separated by a diaphragm, and 1M zinc sulfate electrolyte is added to make a supercapacitor.

Embodiment 3

[0023] Weigh zinc nitrate and cobalt nitrate to make an aqueous solution according to the metering ratio, stir and mix with activated carbon dispersion liquid with 30% cobalt mass, and stir for 2 hours in a nitrogen atmosphere, then add sodium hydroxide, and control the reaction time for 5 minutes. The product was washed and dried, and the obtained composite material precursor was calcined at 600° C. for 1 hour to obtain a composite material of zinc-cobalt composite metal oxide and activated carbon. Composite materials, binder PTFE, and conductive agent VGCF are used to make positive electrodes, and activated carbon, binder PTFE, and conductive agents are used to make negative electrodes. The middle is separated by a diaphragm, and 1M zinc sulfate electrolyte is added to make a supercapacitor.

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 composite material for a supercapacitor and a preparation method thereof. The composite material for the supercapacitor is characterized in that the composite material comprises composite metallic oxide ZnMxOy (M=Fe, Co, Mn, 0<x<3, the ratio of the x and the y is 1:1 to 1:4) and active carbon. The preparation method comprises the following steps that (1) active carbon dispersion liquid is added to metal salt solutions containing the M to obtain mixed liquid, and the mass of the active carbon is 10%-60% of that of the M; (2) the mixed liquid of the step (1) is stirred continuously, metal salt solutions containing Zn is added to the mixed liquid, reaction is carried out for 2 to 8 hours under the temperature of 60 DEG C to 80 DEG C, and the ratio of the amount of substance of the metal salt solutions containing the Zn and the metal salt solutions containing the M is 1:2 to 1:7; (3) products obtained in the step (2) are washed and dried to constant weight and are used as precursor of the composite material, and reaction is carried out on the precursor for 1 to 6 hours under the temperature of 500 DEG C to 900 DEG C to obtain the composite material. Raw materials are wide in source, and the preparation technology is simple. The composite material can serve as the electrode active material of the supercapacitor.

Description

technical field [0001] The invention relates to a composite material, in particular to a composite material for a supercapacitor and a preparation method thereof, belonging to the field of new energy. Background technique [0002] The increasingly serious energy crisis and environmental pollution have promoted the continuous development of energy-saving and new energy vehicles. As one of the core components of energy-saving and new energy vehicles, power batteries have attracted the attention of various car companies. The energy density of the power supply currently used is low, and the mileage of the car is short; the power density is small, the performance of starting, climbing and accelerating the car is poor; the weight is large and the installation is inconvenient; the service life is short, and it cannot be the same as the whole car; the cost of the battery High, the comprehensive cost of the whole vehicle remains high; the working temperature range is narrow, and the...

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): H01G11/46H01G11/32H01G11/86
CPCY02E60/13
Inventor 荣常如韩金磊陈书礼张克金魏晓川
Owner 一汽资产经营管理有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
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