Composite material of conducting high polymers/alloy for nickel-hydrogen battery and preparation thereof
What is Al technical title?
Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A conductive polymer and composite material technology, applied in the field of alloy composite materials for nickel-hydrogen batteries, can solve problems such as affecting the performance of alloy electrodes, poor cycle stability, alloy powdering, etc. Effect
Inactive Publication Date: 2008-10-22
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
View PDF0 Cites 10 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
However, nickel-metal hydride batteries have certain requirements for the maximum discharge capacity of the alloy electrode and the stability of the charge-discharge cycle. Improving the charge-discharge performance of the alloy electrode is one of the research purposes of the alloy electrode material; During the discharge cycle, alloy powdering and corrosion are prone to occur, which affects the performance of alloy electrodes. This is also the purpose of research on alloy electrode materials.
[0003] AB used in the past 3 Alloy electrodes, although the discharge capacity is lower than industrially produced AB 5 Alloy electrodes have a large discharge capacity, but are limited by poor cycle stability and cannot really replace AB 5 Alloy electrodes, and used in large-scale industrial production
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
Click on the blue label to locate the original text in one second.
Reading with bidirectional positioning of images and text.
Smart Image
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0028] Take 0.5ml of double-distilled aniline monomer and dissolve it in 10mL of deionized water, then add 2.6mL of 2mol / L hydrochloric acid, and after stirring for about 30min, add dropwise an aqueous solution of ammonium persulfate (2.56g of ammonium persulfate dissolved in 11mL of water ), the average rate of addition is 20drop / min, after all the dropwise addition, then stir and react for 12h, the product obtained is washed and filtered by methanol and water (polyaniline is washed with methanol to remove unreacted aniline monomer, polyaniline has better conductivity), baked in a vacuum oven at 60°C for 24 hours, and set aside.
[0029] AB 3Alloy according to La 0.7 Mg (0.3-x) Ti x Ni y co 3.5-y (x = 0.02 ~ 0.06, y = 2.9 ~ 3.2), put each metal into a high-temperature melting furnace, protect it with argon, heat up and smelt, repeat 3 times, and obtain evenly smelted AB 3 alloy, the AB 3 The alloy block is crushed, ground, passed through a 300-mesh sieve, and set aside...
Embodiment 2
[0039] The difference from Example 1 is that polypyrrole is prepared by injecting 1 mL of pyrrole monomer that has been distilled 4 times into 100 mL of an acidic aqueous solution of ammonium persulfate (ammonium persulfate is 3.12 g). The reaction was carried out under stirring for 12 hours, and the obtained product was washed and filtered with methanol and water (polypyrrole was washed with methanol to remove unreacted aniline monomer, polyaniline has better electrical conductivity), and baked in a vacuum oven at 60°C for 24 hours ,spare.
[0040] AB 3 Alloy according to La 0.7 Mg (0.3-x) Ti x Ni y co 3.5-y (x=0~0.02, y=3.3~3.5) proportioning, smelting preparation conditions are the same as embodiment 1. Will AB 3 The alloy block is smashed, ground, and passed through a 200-300 mesh sieve, and the intermediate product is taken for later use.
[0041] Take 1g of AB through 200-300 mesh sieve 3 The alloy is mixed with 0.01g of polypyrrole, put into an agate ball mill ...
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
Login to view more
Abstract
The invention relates to conductive high molecular polymer / alloy composite material for nickel-hydrogen batteries and a preparation method thereof. The composite material is compositely formed by a metal AB3 alloy and a conductive high molecular polymer, and is a material that the conductive high molecular polymer is coated on the surface of the metal alloy; the mixture ratio of the metal AB3 alloy is La 0.7 Mg 0.3-x Ti x Ni y Co 3.5-y, wherein, x is equal to 0-0.15, and y is equal to 2.0-3.5; and the mass mixture ratio of the metal alloy and the conductive high molecular polymer is 100:1-4. The composite material can be prepared according to the following steps: 1) an organic monomer with conductivity is evoked by acid conditions and oxidant to polymerize to obtain the conductive high molecular polymer; 2) the metal alloy is prepared through a high-temperature smelting furnace, and then undergoes ball milling with the conductive high molecular polymer to obtain the even composite material. The preparation method has simple process and low cost, and can effectively improve the stability of charge / discharge circulation of alloy electrodes by compounding the conductive high molecular polymer and the metal alloy, thereby providing effective protection for alloy electrodes. The material is suitable for applications such as the protection of electrode materials, fuel batteries and so on.
Description
technical field [0001] The invention relates to alloy composite materials for nickel-hydrogen batteries, in particular to a conductive high-molecular polymer / alloy composite material for nickel-hydrogen batteries and its preparation, which combines conductive high-molecular polymers with improved electrode cycle stability and metal alloys Composite preparation of new composite materials for nickel metal hydride batteries. Background technique [0002] As a kind of electrode materials, metal alloys are widely used in the field of fuel cells. The typical application of this material is on nickel-metal hydride batteries. The reaction on the positive and negative electrodes of nickel-hydrogen batteries belongs to the solid-state transition mechanism. The electrode material itself does not involve any dissolution and deposition processes, while metal hydride electrodes only involve hydrogen atoms. The transfer and electrochemical reaction lead to a higher utilization rate of the...
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
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to view more 
Login to view more