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

Method for manufacturing a zinc electrode by wet process

A zinc electrode and manufacturing method technology, applied in the field of electrochemical cells, can solve the problems of complex electrode manufacturing method, inability to effectively limit the formation of dendrites, etc.

Pending Publication Date: 2020-06-30
ELECTRICITE DE FRANCE
View PDF11 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the solution proposed in this application requires specific tools, which complicates the fabrication method of the electrodes
In addition, calcium zincate is not always uniformly distributed within the electrode, which cannot effectively limit the formation of dendrites

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
  • Method for manufacturing a zinc electrode by wet process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0119] Zinc electrodes were prepared by the method according to the invention.

[0120] In the case of this example, the reagent amounts shown in Table 1 were used.

[0121] [Table 1]

[0122] Reagent quantity ZnO 150g Ca(OH) 2

30g Deionized water 30mL PTFE 20mL ethanol 30mL

[0123] Zinc oxide powder (Merck Emsure) was mechanically mixed with calcium hydroxide (Merck) in a mixer at 23°C for 5 minutes. While keeping the mixer running, add deionized water to the mixture at a constant rate over about 30 seconds while providing good mixture homogeneity. Adding water will form calcium zincate crystals.

[0124] The mixture was kept under stirring for 3 minutes. Then, a 60% strength aqueous suspension of PTFE (Aldrich) was added within 1 minute.

[0125] The mixture was kept stirring again for 5 minutes, during which time calcium zincate crystals continued to form and grow.

[0126] The maturation reaction was interrupted b...

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

Disclosed is a production method for a zinc electrode with in situ formation of calcium zincate crystals. The method includes notably the steps of preparation of a mixture, growth of crystals, slowingof the growth and production of the electrode.

Description

technical field [0001] The present invention relates to the field of electrochemical cells, and more particularly to methods of production of specific zinc electrodes. Background technique [0002] Metallic zinc negative electrodes are particularly attractive for batteries because they have high gravimetric capacity (820 Ah / kg Zn), can be cycled charge and discharge in aqueous electrolytes, and are made from abundant, nontoxic, and low-cost raw materials. . [0003] Zinc electrodes are used in several types of batteries that use alkaline electrodes. For example, zinc electrodes can be used in zinc-manganese dioxide batteries (commonly called "alkaline batteries") or zinc-air batteries (for example in hearing aids). These two example batteries are not designed to be rechargeable, and their zinc-based anodes work by electrochemically converting metallic zinc to zinc oxide (reaction according to Equation 1) or to zincate [Zn(OH) 4 ] 2- while working (reaction according to E...

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): H01M4/08H01M4/1395H01M10/30H01M6/06
CPCH01M4/08H01M4/1395H01M10/30H01M6/06H01M2004/027H01M4/0435H01M4/244H01M4/623H01M4/0497Y02E60/10H01M4/043H01M10/36
Inventor 菲利普·史蒂文斯格韦纳埃勒·陶萨因特
Owner ELECTRICITE DE FRANCE
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