Preparation method and application of modified carbon cloth

A technology for modifying carbon and carbon cloth, which is used in fuel cells, regenerative fuel cells, electrical components, etc., to achieve the effects of easy operation, simple equipment, and improved conductivity.

Active Publication Date: 2021-01-15
中海储能科技(北京)有限公司
View PDF7 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the main application fields of existing carbon cloth do not include electrode materials. Carbon cloth manufacturers are mainly committed to the improv

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
  • Preparation method and application of modified carbon cloth
  • Preparation method and application of modified carbon cloth
  • Preparation method and application of modified carbon cloth

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0041]Example 1

[0042]This embodiment provides a method for preparing modified carbon cloth, including:

[0043]Commercially available carbon cloth is pre-treated: soaked in a concentrated sulfuric acid solution for 10 hours, then washed and dried.

[0044]1) The zinc salt and the surfactant are made into a zinc salt aqueous solution, and the carbon cloth is immersed in the zinc salt aqueous solution.

[0045]The proportion of zinc salt aqueous solution is: According to 30g Zn(CH3COO)2·2H2O and 10g polyethylene glycol (PEG400) were added to 100g of water to prepare a solution, ultrasonic for 15 minutes to obtain a zinc salt aqueous solution, carbon cloth was immersed in the zinc salt aqueous solution and allowed to stand for 2 hours before taking it out.

[0046]2) Step 1) The obtained carbon cloth is dried and calcined; the calcining temperature is 280° C. for 1.5 hours.

[0047]The modified carbon cloth of this embodiment is used to assemble a single battery, and the battery structure is the same...

Example Embodiment

[0049]Example 2

[0050]This example provides a method for preparing modified carbon cloth. The pretreatment and step 1) are basically the same as those in Example 1, except that 40g Zn(CH3COO)2·2H2O and 10g polyethylene glycol (PEG400) are added to 100g water to prepare zinc salt aqueous solution.

[0051]Using the modified carbon cloth of this embodiment to assemble a single battery, the battery structure is the same as the test example; the internal resistance of the battery is 1.3 milliohms.

Example Embodiment

[0052]Example 3

[0053]This embodiment provides a method for preparing modified carbon cloth. The pretreatment and step 1) are basically the same as those in embodiment 1, except that 20g Zn(CH3COO)2·2H2The ratio of O and 10g polyethylene glycol (PEG400) into 100g water is made into zinc salt aqueous solution.

[0054]The modified carbon cloth of this embodiment is used to assemble a single battery, and the battery structure is the same as the test example; the internal resistance of the battery is 1.4 milliohms.

[0055]Comparing the results of Examples 1-3, it is preferable that the ratio of the zinc salt aqueous solution is 30g Zn(CH3COO)2·2H2O and 10g polyethylene glycol (PEG400) are added into 100g water to prepare.

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
Apertureaaaaaaaaaa
Internal resistanceaaaaaaaaaa
Internal resistanceaaaaaaaaaa
Login to view more

Abstract

The invention provides a preparation method and application of modified carbon cloth. The preparation method comprises the following steps: 1) preparing a zinc salt aqueous solution from zinc salt anda surfactant, and immersing carbon cloth into the zinc salt aqueous solution; 2) drying and roasting the carbon cloth obtained in the step 1) at the roasting temperature of 150-400 DEG C, and 3) modifying the carbon cloth obtained in the step 2) with a Nafion solution. According to the preparation method of the modified carbon cloth provided by the invention, zinc salt and the Nafion solution areused for modifying the carbon cloth, so that the conductivity of the carbon cloth serving as an electrode material is improved, and the internal resistance of a battery is reduced.

Description

technical field [0001] The invention belongs to the technical field of energy materials, and in particular relates to the preparation and application of an electrode material. Background technique [0002] Redox flow battery is a new type of battery that has attracted much attention in recent years. The battery uses liquid electrolyte as the electrode active material. The structural materials of the battery can be carbon materials, engineering plastics, etc., and the price is low; the battery can be extremely Large capacity and safety are guaranteed; because the power and capacity of the battery are designed independently of each other, charging and discharging, and capacity adjustment are very flexible. [0003] The main key materials of flow batteries include electrodes, separators and electrolytes. At present, the main electrode material is carbon felt (such as patent CN201310115553.7-the treatment method of carbon felt electrode of vanadium battery, CN201610738841.1-ele...

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): H01M4/88H01M4/86H01M4/96H01M8/18
CPCH01M4/8673H01M4/8803H01M4/96H01M8/188Y02E60/50
Inventor 不公告发明人
Owner 中海储能科技(北京)有限公司
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