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

A kind of preparation method of graphite felt for liquid flow battery

A liquid flow battery and graphite felt technology, which is applied in fuel cells, battery electrodes, regenerative fuel cells, etc., can solve the problems of low battery efficiency and low carbon content in graphite felt, and achieve stable electrode quality, high electrochemical activity, The effect of improving the quality of finished products

Active Publication Date: 2020-10-13
DALIAN LONGTIAN TECH
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems of low carbon content and low battery efficiency in graphite felt in the prior art, the invention provides a preparation method of graphite felt for flow batteries

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
  • A kind of preparation method of graphite felt for liquid flow battery
  • A kind of preparation method of graphite felt for liquid flow battery
  • A kind of preparation method of graphite felt for liquid flow battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0027] A method for preparing a graphite felt for a flow battery, comprising the following steps:

[0028] S1 raw material preparation:

[0029] (1) First open the chopped pre-oxygen wire through the opening machine;

[0030] (2) Then, the chopped pre-oxygenated filaments after opening are laid into a net through a carding machine and an air-laying machine to form a pre-oxygenated wire mesh tire;

[0031] (3) Finally, the pre-oxygen wire mesh tire is needled by a needle punching machine to form a pre-oxygen silk felt;

[0032] S2 high temperature heating:

[0033] (1) Put the pre-oxidized silk felt prepared by S1 into the high-temperature carbonization and graphitization furnace, raise the temperature from normal temperature to 400°C in 2 hours, and then raise the temperature to 1200°C in 2 hours, all of which are heated at a constant rate;

[0034] (2) Incubate for 4 hours at 1200°C;

[0035] (3) Continue to heat up to 2000°C and keep warm for 4 hours;

[0036] (4) Cool ...

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
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention belongs to the technical field of the preparation of carbon fiber felts, and particularly relates to a preparation method of a graphite felt for a flow battery. The preparation method comprises the following steps: preparing raw materials, heating at a high temperature, and activating. A pre-oxidized felt raw material is adopted, so that the erosion caused by the excessively high local temperature can be avoided, and the production cost can be reduced; the high-temperature treatment and activation process is optimized, the production period is shortened, and the production efficiency is improved; the pre-oxidized felt of the specific specification is selected, and the quality of a finished product is improved; the electrode porosity of a finished product obtained by using themethod of the invention is high, the specific surface area is large, the electrode quality is stable, and the service life is long; and the flow battery prepared by using the electrode is small in resistance value, high in electrochemical activity and excellent in battery performance.

Description

technical field [0001] The invention belongs to the technical field of carbon fiber felt preparation, and particularly relates to a preparation method of a graphite felt for a flow battery. Background technique [0002] Flow battery is a new type of clean energy storage device. Compared with lead-acid batteries and nickel-metal hydride batteries, it has obvious technical advantages such as high power, long life, support for frequent high current charging and discharging, green and pollution-free, and is mainly used in renewable energy. Grid-connected power generation, urban power grid energy storage, remote power supply and other fields. With the continuous consumption of natural energy (petroleum and coal), the problem of air quality degradation caused by fossil fuels is becoming more and more prominent. The development and promotion of solar energy, wind energy, geothermal energy and other clean energy sources, emphasizing new energy and renewable energy sources, are of gr...

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 Patents(China)
IPC IPC(8): H01M4/86H01M4/88H01M4/96H01M8/18
CPCH01M4/8605H01M4/8875H01M4/96H01M8/188Y02E60/50
Inventor 战丽姝樊志勇谭毅王登科
Owner DALIAN LONGTIAN TECH
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