High-capacity and stable-circulation electrochemical lithium storage composite electrode and preparation method

A composite electrode and electrochemical technology, applied in the direction of battery electrodes, electrode manufacturing, non-aqueous electrolyte battery electrodes, etc., to achieve the effect of strong hydrophobicity and strong electrostatic interaction

Active Publication Date: 2014-10-15
ZHEJIANG UNIV
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, so far, with MoS 2 Nanowatt / graphene composite nanomaterials as electrochemically active materials for electrochemical lithium storage composite electrodes and their preparation have not been reported yet

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
  • High-capacity and stable-circulation electrochemical lithium storage composite electrode and preparation method
  • High-capacity and stable-circulation electrochemical lithium storage composite electrode and preparation method
  • High-capacity and stable-circulation electrochemical lithium storage composite electrode and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] 1) Disperse 2.5 mmol of graphene oxide ultrasonically in 60 mL of deionized water, then add 0.8 mmol of gemini surfactant N-dodecyl propylene diamine bis bromide, and stir well, then add 0.76 g in turn (6.25 mmol) L-cysteine ​​and 0.3 g (1.25 mmol) sodium molybdate (Na 2 MoO 4 ·2H 2 O), and keep stirring to completely dissolve L-cysteine ​​and sodium molybdate, adjust the volume to about 80 mL with deionized water;

[0026] 2) Transfer the obtained mixture to a 100 mL hydrothermal reactor, put the reactor in a constant temperature oven, and after hydrothermal reaction at 230℃ for 24 h, let it cool to room temperature naturally, and collect the solid by centrifugation The product was thoroughly washed with deionized water, dried in vacuum at 100°C, and the obtained solid product was heat-treated in a nitrogen / hydrogen mixed atmosphere at 800°C for 2h, and the volume fraction of hydrogen in the mixed gas was 10%. MoS was prepared 2 Nano-watt / graphene composite nano-materials,...

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 high-capacity and stable-circulation electrochemical lithium storage composite electrode and a preparation method thereof. An active electrochemical lithium storage matter of the composite electrode adopts MoS2 nano tile/graphene composite nanomaterial, the substance ratio of MoS2 nano tile to graphene in the composite nanomaterial is (1:1)-(1:3), the MoS2 nano tile adopts a layered structure with a few layers, and the average number of layers is four; and the composite electrode comprises components in percentage by mass as follows: 80%-85% of the MoS2 nano tile/graphene composite nanomaterial, 5%-10% of acetylene black and 5%-10% of polyvinylidene fluoride. The preparation method comprises steps as follows: the MoS2 nano tile/graphene composite nanomaterial is firstly prepared, the prepared composite nanomaterial, acetylene black and polyvinylidene fluoride are mixed into paste, a copper foil is coated with the paste, the paste is dried, and the electrode is obtained through rolling. The electrochemical lithium storage composite electrode has high electrochemical lithium storage capacity and wide application prospect.

Description

technical field [0001] The invention relates to an electrochemical lithium storage electrode and a preparation method thereof, in particular to the use of MoS 2 Nanowatt / graphene is a high-capacity and cycle-stable composite electrode prepared as an electrochemically active substance and a preparation method thereof, belonging to the field of new energy materials and their application technologies. Background technique [0002] Lithium-ion batteries have excellent properties such as high specific energy, no memory effect, and environmental friendliness, and have been widely used in portable mobile appliances such as mobile phones and notebook computers. As a power battery, lithium-ion batteries also have broad application prospects in electric bicycles, electric vehicles and smart grids. At present, graphite materials (such as: graphite microspheres, natural modified graphite and artificial graphite, etc.) are mainly used as negative electrode materials for lithium-ion batt...

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): H01M4/58H01M4/136H01M4/1397
CPCY02E60/122B82Y30/00H01M4/0404H01M4/13H01M4/139H01M4/366H01M4/5815H01M4/587Y02E60/10
Inventor 陈卫祥王臻黄国创马琳叶剑波
Owner ZHEJIANG 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