Porous sulfide/graphene composite electrode material for super capacitor and preparation method thereof

A composite material and graphene technology, which is applied in the fields of environmental protection, electrochemistry, energy storage, materials, and chemical industry, can solve the problems of low specific surface area of ​​electrode materials, poor electrochemical performance of composite materials, and low capacitance, etc., and achieve uniform, stable and reliable controlled synthesis, good electrical conductivity, and large specific surface area

Active Publication Date: 2016-08-17
FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
View PDF3 Cites 19 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Graphene / CuCo has also been done in this prior art 2 S 4 Electrode material, according to its report, the specific surface area of ​​the electrode material is very low, only 12.849m 2 g -1 , and the electrochemical performance of the electrode material is better than that of graphene / carbon nanotube / CuCo 2 S 4 Composite materials are worse and have lower capacitance (J.Shen, J.Tang, P.Dong, Z.Zhang, J.Ji, R.Baines, M.Ye, Construction of Three-Dimensional CuCo 2 S 4 / CNT / graphene Nanocomposite for High Performance Supercapacitors, RSCAdvances., 2016, 6, 13456-13460.)

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
  • Porous sulfide/graphene composite electrode material for super capacitor and preparation method thereof
  • Porous sulfide/graphene composite electrode material for super capacitor and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Prepare graphene oxide in advance (or synthesize graphene oxide with graphite powder or graphite oxide) or reduce graphene oxide for later use.

[0029] First disperse 45mg graphene oxide in 15ml deionized water. 0.5mmol Cu(OAC)·H 2 O,1mmol Co(OAC)·4H 2 O was dissolved in 15ml of absolute ethanol and ultrasonically treated for 30min. The above metal salt solution was slowly added dropwise into the graphene oxide dispersion. After magnetic stirring for 30min, 72mgNa was added dropwise 2 CO 3 (dissolved in 2ml deionized water), continue to stir for 30min, and then add 1.0-2.0ml (1.5ml is a better value) triethylamine dropwise. After 1 h, the mixed solution was transferred to a polytetrafluoroethylene reactor for hydrothermal synthesis reaction, and heated at 180° C. for 12 h. After the reactor was naturally cooled to room temperature, the obtained samples were washed with deionized water and absolute ethanol, and dried at 70°C for 3 hours to obtain a graphene-copper...

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
mesoporeaaaaaaaaaa
microporeaaaaaaaaaa
Login to view more

Abstract

The invention discloses a porous sulfide/graphene composite electrode material for a super capacitor and a preparation method thereof, and relates to a nanometer strip-shaped porous CuCo2S4/graphene composite material and a preparation method thereof. The preparation method comprises the following steps: (1) mixing a Cu-containing metal salt, a Co-containing metal salt, oxidized graphene or reduced oxidized graphene or graphene dispersion liquid, a weakly-alkaline substance and amine, and performing a hydrothermal reaction on the mixed solution to obtain a graphene-copper-cobalt hydroxide precursor; (2) heating the graphene-copper-cobalt hydroxide precursor obtained in the step (1) at a high temperature to obtain a graphene-copper-cobalt oxide precursor; (3) dissolving the graphene-copper-cobalt oxide precursor obtained in the step (2) into water, and performing a hydrothermal reaction with NaS.9H2O to obtain a CuCo2S4/graphene composite material. The composite material is taken as an electrode material of the super capacitor, and has high electrochemical energy-storing performance.

Description

technical field [0001] The invention relates to a porous sulfide / graphene composite electrode material and a preparation method thereof. The material is used for supercapacitors, batteries and catalysts, and belongs to the fields of materials, electrochemistry, energy storage, chemical industry and environmental protection. Background technique [0002] Supercapacitor is a new type of energy storage device that can store high energy, and has attracted more and more attention due to its fast charging and discharging speed, high power density, long cycle life and good stability. In general, supercapacitors can be divided into electrochemical double layer supercapacitors and Faraday pseudocapacitors according to their energy storage mechanism. Among these two types of capacitors, metal oxides, metal sulfides, and conductive polymers with pseudocapacitive properties can provide higher theoretical specific capacitance and energy density. Transition metal oxides, hydroxides, and ...

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
Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/30H01G11/32H01G11/86B82Y30/00B82Y40/00
CPCY02E60/13H01G11/30B82Y30/00B82Y40/00H01G11/32H01G11/86
Inventor 陶有胜刘立乐
Owner FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap