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

Cathode material for graphene battery and preparation method thereof

A cathode material, graphene technology, applied in battery electrodes, circuits, electrical components, etc., can solve the problems of low specific capacity and poor cycle life, and achieve the effect of high specific capacity, improved cycle life, and large specific capacity

Active Publication Date: 2018-11-13
山东科思姆特种材料技术开发有限公司
View PDF9 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when graphene is used to make electrodes in batteries, the specific capacity is low and the cycle life is poor.

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
  • Cathode material for graphene battery and preparation method thereof
  • Cathode material for graphene battery and preparation method thereof
  • Cathode material for graphene battery and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0033] The present invention also provides above-mentioned a kind of preparation method for the cathode material of graphene battery, comprises the following steps:

[0034] a) In a vacuum environment in a vacuum glove box, add carbon black, titanium, platinum, tungsten, molybdenum, and lithium to the polyimide conductive adhesive and stir evenly, then smear it on the surface of the substrate, and dry it to obtain the primary cathode substrate material;

[0035] b) oxidizing the graphite into graphite oxide, and dispersing the graphite oxide in deionized medium, adding a reducing agent to obtain a pre-reduced graphene solution;

[0036] c) coating the pre-reduced graphene solution obtained in step b) on the surface of the primary cathode substrate, and performing laser irradiation and drying to obtain the cathode material for the graphene battery.

[0037] In the above technical scheme, by first coating the mixture of carbon black, titanium, platinum, tungsten, molybdenum, li...

Embodiment 1

[0044] Weigh 5g of particle size as 300 mesh flake graphite and 2gNaNO 3 For relaxation, add 120mL of concentrated sulfuric acid and place in an ice-water bath for stirring. After 30min, add 20g of KMnO 4 , after reacting for 60 minutes, move it into a warm water bath at 40°C and continue to react for 30 minutes, then slowly add 230mL deionized water, and keep the reaction temperature at 98°C, stir for 5 minutes, add an appropriate amount of hydrogen peroxide until no bubbles are generated, filter while hot, and use deionized Wash with water and 5% hydrochloric acid several times until neutral, and after centrifugation, fully dry in a vacuum oven at 60°C to obtain graphite oxide.

Embodiment 2

[0046] For the cathode material of graphene battery, comprise the raw material of following parts by weight:

[0047]85g carbon rod, 2.2g polyimide conductive glue, 1g carbon black, 0.12g titanium, 0.11g platinum, 0.07g tungsten, 0.026g molybdenum, 0.13g lithium;

[0048] A preparation method for a cathode material of a graphene battery, comprising the following steps:

[0049] a) In a vacuum environment in a vacuum glove box, add carbon black, titanium, platinum, tungsten, molybdenum, and lithium to the polyimide conductive adhesive and stir evenly, then smear it on the surface of the carbon rod, and obtain the primary cathode base after drying. material;

[0050] B) disperse in the graphite oxide that 1.5g embodiment 1 makes in deionization, add reducing agent, obtain pre-reduced graphene solution;

[0051] c) coating the pre-reduced graphene solution obtained in step b) on the surface of the primary cathode substrate, and performing laser irradiation and drying to obtain ...

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 cathode material for a graphene battery and a preparation method thereof. By doping titanium, platinum, tungsten, molybdenum and lithium in conductive graphite, not only is the high specific capacity of the cathode material ensured, but also the conductivity of the cathode material is improved. The cathode material consists of three structures, including a substrate, a mixture of the conductive graphite, the titanium, the platinum, the tungsten, the molybdenum and the lithium and the grapheme sequentially from the inside to the outside. The cathode material of the structure has high conductivity and specific capacity, and maintains the high cathode specific capacity after multiple charge / discharge cycles, so that the cycle life of the graphene battery is prolonged. In addition, the preparation method of the cathode material for the graphene battery is simple in process, low in raw material cost and suitable for industrial production.

Description

technical field [0001] The invention relates to the battery field, in particular to a cathode material for a graphene battery and a preparation method thereof. Background technique [0002] Graphene is a honeycomb planar film formed by sp2 hybridization of carbon atoms. It is a quasi-two-dimensional material with only one atomic layer thickness, so it is also called monoatomic layer graphite. Andre Geim and Konstantin Novoselov, physicists at the University of Manchester in the United Kingdom, successfully separated graphene from graphite by micromechanical exfoliation, so they jointly won the 2010 Nobel Prize in Physics. The common powder production methods of graphene are mechanical exfoliation method and redox method, and the film production method is chemical vapor deposition method. Due to its very good strength, flexibility, electrical conductivity, thermal conductivity, and optical properties, it has been greatly developed in the fields of physics, materials science,...

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): H01M4/36H01M4/38H01M4/62
CPCH01M4/364H01M4/38H01M4/625Y02E60/10
Inventor 陈胜绪李增昆马志远
Owner 山东科思姆特种材料技术开发有限公司
Features
  • Generate Ideas
  • 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