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

Production of nickel-hydrogen diaphragm and products thereof

A battery separator and nickel-metal hydride battery technology, which is applied in the field of preparation of nickel-metal hydride battery separators, can solve problems such as inability to industrially implement, strength damage, and shrinkage of the diaphragm base cloth, and achieve easy industrial implementation, easy process control, and reliable product performance. Effect

Inactive Publication Date: 2006-03-15
TIANJIN POLYTECHNIC UNIV
View PDF5 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Although the aforementioned U.S. Patent US6355375, Japanese Patent JP2001011761 and Japanese Patent JP2000277085 all mentioned the sulfonation treatment of the battery diaphragm, they did not clearly provide specific sulfonation process, such as sulfonation agent, sulfonation temperature, sulfonation time, etc., cannot be implemented industrially
The sulfonation temperature and time are just the important process parameters in the sulfonation process. If the sulfonation temperature is too low or the time is insufficient, the sulfonation effect will not be achieved. If the sulfonation temperature is too high or the time is too long, the diaphragm base fabric will shrink severely. The strength is destroyed, and the hydrophilicity decreases
In the Japanese patent JP2001222989 and Japanese patent JP2002141043, although the sulfonating agent and the sulfonation temperature are given, the sulfonation time is also not given, and the specific applicable fiber raw materials and post-sulfonation treatment are not given. methods, etc., while the given sulfonation temperature range is wide, and the quality control of industrial applications is inconvenient

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] (1) Using ES fibers with a low-density polyethylene content of 52% to produce a non-woven fabric base fabric for separators.

[0027] (2) Sulfonation treatment: select 98% concentrated sulfuric acid as the sulfonation agent, immerse the base cloth in the high-temperature concentrated sulfuric acid treatment solution for sulfonation treatment, and apply a tension force of 30N / 50mm; the sulfonation process conditions are: The sulfonation temperature is 130°C, and the sulfonation time is 78s.

[0028] (3) Post-sulfonation treatment: After sulfonation, wash the cloth once with 70% sulfuric acid solution, once with 30% sulfuric acid solution, and twice with pure water. It can be obtained after ironing at 85°C.

[0029] According to Japanese nickel-metal hydride battery diaphragm test standard, the performance of test embodiment 1 product is as follows:

[0030] Gram weight g / m 2 60

[0031] Tensile strength (longitudinal) N / 50mm 323

[0032] Suc...

Embodiment 2

[0038] (1) With embodiment 1.

[0039] (2) Sulfonation treatment: select 93% concentrated sulfuric acid as the sulfonation agent, immerse the base cloth in the high-temperature concentrated sulfuric acid treatment solution for sulfonation treatment, and apply a tension force of 26N / 50mm; the sulfonation process conditions are: The sulfonation temperature is 144°C, and the sulfonation time is 10.5s.

[0040] (3) Post-sulfonation treatment: After sulfonation, wash the cloth once with 65% sulfuric acid solution, once with 25% sulfuric acid solution, and twice with pure water, each washing time is 5 minutes; after cleaning, dry at 80°C for 70 minutes , Iron at 80°C to make it flat.

[0041] According to Japanese nickel-metal hydride battery diaphragm test standard, the performance of test embodiment 2 product is as follows

[0042] Gram weight g / m 2 65

[0043] Tensile strength (longitudinal) N / 50mm 220

[0044] Suction speed mm / 30min 89

[0045] Li...

Embodiment 3

[0050] (1) With embodiment 1.

[0051] (2) Sulfonation treatment: select 95% concentrated sulfuric acid as the sulfonation agent, immerse the base cloth in the high-temperature concentrated sulfuric acid treatment solution for sulfonation treatment, and apply a tension force of 10N / 50mm; the sulfonation process conditions are: The sulfonation temperature is 142°C, and the sulfonation time is 12s.

[0052] (3) Post-sulfonation treatment: After sulfonation, wash the cloth once with 50% sulfuric acid solution, once with 20% sulfuric acid solution, and twice with pure water, each washing time is 4 minutes, and dry at 85°C for 1 hour after cleaning , Iron it flat at 90°C.

[0053] According to Japanese nickel-metal hydride battery diaphragm test standard, the performance of test embodiment 3 product is as follows:

[0054] Gram weight g / m 2 70

[0055] Tensile strength (longitudinal) N / 50mm 330

[0056] Suction speed mm / 30min 90

[0057] Liquid reten...

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
diameteraaaaaaaaaa
voidageaaaaaaaaaa
Login to View More

Abstract

The process for preparation of Ni-MH battery separator includes following steps: ú¿1ú® polyolefine Fiber made of low density polyethylene is used to make battery separator base fabric; (2) the battery separator base fabric is treated with sulphonation that is: select 93-98% oil of vitriol as sulphonation agent, 129-144 Deg C. sulphonation temperature, 10-80 S sulphonation time; meantime apply 0-30 N / 50mm tension on the battery separator base fabric;(3) 50-70% vitriol and 20-30% vitriol are separately used to wash it one time; pure water is used to wash it two times; then under 80í¬90 Deg C. and for 50-70 min , make it drying.

Description

technical field [0001] The invention relates to battery manufacturing technology, specifically a method for preparing a Ni-MH battery diaphragm and its product technology, and the international patent classification number is intended to be Int.C1 7 H01M 2 / 14. Background technique [0002] As people pay more attention to environmental protection, Ni-MH battery has attracted people's attention as a pollution-free "green battery". In particular, due to the pollution of fuel vehicles and the constraints of petroleum resources, high-performance power Ni-MH batteries for electric vehicles have become a research and development hotspot in batteries. [0003] The battery separator is an inorganic or organic film that separates the positive and negative electrodes of the battery to prevent the positive and negative electrodes from directly contacting and short-circuiting. Among the various components of the battery, the separator undoubtedly plays a pivotal role. The quality of ...

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): H01M2/14H01M50/403H01M50/417H01M50/44
CPCY02E60/10
Inventor 程博闻焦晓宁杨文娟任元林刘亚李建耿鸣明
Owner TIANJIN POLYTECHNIC UNIV
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