Porous carbon-graphene-metal oxide composite material and preparation method and application thereof

A composite material and porous material technology, applied in porous carbon-graphene-metal oxide composite materials and their preparation and application fields, can solve the problem of reducing the performance and product quality of supercapacitor devices, affecting the electrical conductivity of electrode materials, and the inconsistency of porous structures. Continuity and other problems, to achieve the effect of maintaining continuity and continuity, solving the discontinuity of specific surface area and structure, and improving specific surface area and electrical conductivity

Active Publication Date: 2016-08-31
XIHUA UNIV
View PDF2 Cites 18 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Traditional supercapacitors use activated carbon as the electrode material, which is characterized by large specific surface area, good electrical performance, and high capacity; however, the current porous activated carbon material will affect the conductivity of the electrode material while the specific

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] A method for preparing a porous carbon-graphene-metal oxide composite material, specifically comprising the following steps:

[0044] (1) After cleaning the loofah, freeze-dry at -50°C for 48 hours;

[0045] (2) The configuration concentration is 5mg. ml -1 The graphene oxide suspension, vigorously stirred to obtain a stable graphene oxide suspension;

[0046] Put the freeze-dried loofah into the graphene oxide solution, soak it for 2 hours, and then dry it at 60°C; repeat the above steps 5 times to ensure that the graphene completely enters the porous material of the loofah and adheres to the porous material surface, forming a porous-graphene composite;

[0047] In the above-mentioned steps, the mass ratio of graphene oxide and loofah is 1:40.

[0048] (3) Put the porous-graphene composite material into a tube furnace for heat treatment. The heat treatment temperature is 900°C and the treatment time is 2h. The porous material is carbonized and the graphene is reduced...

Embodiment 2

[0052] A method for preparing a porous carbon-graphene-metal oxide composite material, specifically comprising the following steps:

[0053] (1) After washing the aloe vera, freeze-dry it at -40°C for 24 hours;

[0054] (2) The configuration concentration is 10mg. ml -1 The graphene oxide suspension, vigorously stirred to obtain a stable graphene oxide suspension;

[0055] Put the freeze-dried loofah into the graphene oxide solution, soak it for 4 hours, and then dry it at 100°C; repeat the above steps 10 times to ensure that the graphene completely enters the aloe porous material and adheres to the surface of the porous material , forming a porous-graphene composite;

[0056] In the above steps, the mass ratio of graphene oxide to aloe is 1:30.

[0057] (3) Put the porous-graphene composite material into a tube furnace for heat treatment. The heat treatment temperature is 1000°C and the treatment time is 4h. The porous material is carbonized and graphene oxide is reduced ...

Embodiment 3

[0061] A method for preparing a porous carbon-graphene-metal oxide composite material, specifically comprising the following steps:

[0062] (1) Sand the shells first to remove the protein and pearl layer, after cleaning, decalcify the shells with EDTA decalcification solution, wash and dry;

[0063] (2) The configuration concentration is 8 mg. ml -1 The graphene oxide suspension, vigorously stirred to obtain a stable graphene oxide suspension;

[0064] Put the treated shells into the graphene oxide solution, soak them for 3 hours, and then dry them at 70°C; repeat the above steps 8 times to ensure that the graphene completely enters the shell porous material and adheres to the surface of the porous material to form a porous- Graphene composite materials;

[0065] In the above steps, the mass ratio of graphene oxide to shell is 1:50.

[0066] (3) Put the porous-graphene composite material into a tube furnace for heat treatment. The heat treatment temperature is 950°C and t...

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 discloses a porous carbon-graphene-metal oxide composite material and a preparation method and an application thereof. By the method, the porous carbon-graphene-metal oxide composite material is obtained by searching a substance with a porous material in the natural world, carrying out high-temperature thermal treatment on the substance and graphene oxide to obtain a porous carbon-graphene composite material and compounding a metal oxide on the composite material. By the porous carbon-graphene-metal oxide composite material, the contradictive problems that the artificially prepared porous material is discontinuous in specific surface area and structure and relatively high in internal resistance can be solved; the specific surface area and the conductivity of the porous material are further improved by a graphene material; and the characteristics of high specific surface area and high conductivity are unified on the same composite material. Meanwhile, the capacitive property of the composite material and the strength of the composite material can be further improved by addition of the metal oxide; the composite material can be applied to the aspects of a super capacitor electrode material and the like; the production process is simple and feasible; and the production cost is low.

Description

technical field [0001] The invention specifically relates to a porous carbon-graphene-metal oxide composite material and its preparation method and application. Background technique [0002] Supercapacitors (Supercapacitors), also known as electric double layer capacitors, is an electrochemical energy storage device, which has the characteristics of short charging time, long service life, good temperature characteristics, energy saving and environmental protection, and is widely used in automobiles, military , electronics and new energy fields; the stability and reliability of supercapacitors in the application process are superior to traditional batteries, and they are recognized as new energy storage components; with the continuous emergence of new energy industries and new energy related products, With its excellent electrical and power characteristics, supercapacitors have gradually become the main devices for large-scale energy storage. [0003] The supercapacitor capa...

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): H01G11/30H01G11/24H01G11/34H01G11/36H01G11/46H01G11/86
CPCY02E60/13H01G11/30H01G11/24H01G11/34H01G11/36H01G11/46H01G11/86
Inventor 姜丽丽
Owner XIHUA UNIV
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