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

Nitride substituted graphene oxide electrode and preparation method thereof

A fossil and graphene technology, applied in the field of electrochemical energy, can solve the problems of reduced specific surface area, reduced performance of supercapacitors and lithium-ion batteries, reduced specific capacity, etc. control effect

Active Publication Date: 2012-07-25
OCEANS KING LIGHTING SCI&TECH CO LTD +1
View PDF1 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, due to the fact that graphene materials and their derivatives are prone to agglomeration, the specific surface area is reduced, so that when it is used as a supercapacitor electrode material, the specific capacity is reduced, and ultimately the performance of the resulting supercapacitor and lithium-ion battery the reduction,

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
  • Nitride substituted graphene oxide electrode and preparation method thereof
  • Nitride substituted graphene oxide electrode and preparation method thereof
  • Nitride substituted graphene oxide electrode and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0019] The preparation process of the above-mentioned graphene oxide nitrogen electrode is as follows:

[0020] Graphite → graphite oxide → graphene oxide → graphene oxide electrode → graphene nitrogen oxide electrode → passivated graphene oxide nitrogen electrode.

[0021] Such as figure 1 As shown, the preparation process steps of graphene oxide nitrogen electrode are as follows:

[0022] Step 1, preparation of graphite oxide: utilize graphite flakes, such as natural flake graphite with a purity of 99.5%, to prepare graphite oxide by the Hummers method (extracted from JACS, 1958, 80, 1339);

[0023] Step 2, preparation of graphene oxide: adding the prepared graphite oxide into water for ultrasonic dispersion to form a graphene oxide solution uniformly dispersed in a single layer, filtering and drying to obtain graphene oxide;

[0024] Step 3, preparation of graphene oxide electrode: Add graphene oxide to a container filled with water or NMP (N-methylpyrrolidone) and a meta...

Embodiment 1

[0036] The preparation technological process of graphene oxide nitrogen electrode among the present invention is as follows:

[0037] Graphite→Graphene Oxide→Graphene Oxide Electrode→Nitrided Graphene Oxide Electrode

[0038] (1) Graphite: purity 99.5%;

[0039] (2) Graphene oxide: Utilize graphite with a purity of 99.5%, to obtain graphene oxide through the improved Hummers method (extracted from JACS, 1958, 80, 1339);

[0040] (3) Ultrasonic disperse the prepared graphene oxide into water, place a current collector aluminum foil at the bottom of the container, stand still and deposit for 12 hours, take out the pole piece, dry, and obtain a graphene oxide electrode;

[0041] (4) Nitrided graphene oxide electrode: the graphene oxide electrode obtained in (3) is passed through with N 2 React to obtain a nitrided graphene oxide electrode; put the dried graphene oxide electrode into the reactor and pass through dry ammonia gas for 0.5h, then pass through argon gas and react wit...

Embodiment 2

[0044] The preparation technological process of graphene oxide nitrogen electrode among the present invention is as follows:

[0045] Graphite→Graphene Oxide→Graphene Oxide Electrode→Nitrided Graphene Oxide Electrode

[0046] (1) Graphite: purity 99.5%;

[0047] (2) Graphene oxide: with embodiment 1;

[0048] (3) Graphene oxide electrode: ultrasonically disperse the prepared graphene oxide into water, place a current collector aluminum foil at the bottom of the container, stand still and deposit for 48 hours, take out the pole piece, and dry;

[0049] (4) Nitrided graphene oxide electrode: put the dried graphene oxide electrode into the reactor and pass through dry ammonia gas for 0.5h, then pass through argon gas and react with graphene oxide at 300°C for 6h, that is Nitrided graphene oxide can be obtained; the gas that continues to pass into the reactor is a mixed gas of argon and ammonia; wherein, ammonia in the reactor accounts for 5% (volume ratio) of the mixed gas, and...

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
breaking strengthaaaaaaaaaa
Login to View More

Abstract

The invention belongs to the field of electrochemistry energy sources, and discloses a nitride substituted graphene oxide electrode and a preparation method thereof. The preparation method of the electrode comprises the following steps: adding graphene oxide into a container which is filled with water and the bottom of which is provided with a metal concentrate body, stirring, then standing and carrying out deposition treatment, then taking out the metal concentrate body of the concentrate graphene oxide and drying, thereby obtaining the graphene oxide electrode; and placing the graphene oxide electrode in a reactor, and then introducing the mixed gas of ammonia and argon to the reactor for substitution reaction, thereby obtaining the nitride substituted graphene oxide electrode. The preparation method of the nitride substituted graphene oxide electrode provided by the invention is simple in preparation process, and parameters can be controlled; the application cost is low, and the using is wide; and meanwhile, the normally used coating technology used in the prior art is omitted, fluorination is realized by one step in the process of preparing the electrode sheet, and multiple complex flows in the material fluorination process are omitted.

Description

technical field [0001] The invention relates to the field of electrochemical energy, in particular to a nitrogen-substituted graphene oxide electrode and a preparation method thereof. Background technique [0002] Andre K. Geim (Andre K.Geim) of the University of Manchester in the United Kingdom prepared graphene materials in 2004, and it has received widespread attention due to its unique structure and photoelectric properties. Single-layer graphite is considered an ideal material due to its large specific surface area, excellent electrical and thermal conductivity, and low thermal expansion coefficient. Such as: 1, high strength, Young's molar weight, (1,100GPa), breaking strength: (125GPa); 2, high thermal conductivity, (5,000W / mK); 3, high electrical conductivity, carrier transport rate, ( 200,000cm 2 / V*s); 4, high specific surface area, (theoretical calculation value: 2,630m 2 / g). In particular, its high conductivity, large specific surface properties and its two-...

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): H01M4/1393H01M4/133
CPCY02E60/122Y02E60/10
Inventor 周明杰刘大喜潘军王要兵
Owner OCEANS KING LIGHTING SCI&TECH CO LTD
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