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

Low cost hydrogen storage alloy, preparation method and application thereof

A hydrogen storage alloy, low-cost technology, applied in the field of hydrogen storage alloy and its preparation, can solve the problem of high cost

Active Publication Date: 2009-12-30
XIAMEN TUNGSTEN
View PDF1 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the content of Co and Ni in this patent is lower than that of conventional hydrogen storage alloys, the cost is still high, in which Co is higher than 0.1 and Ni is higher than 0.41

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
  • Low cost hydrogen storage alloy, preparation method and application thereof
  • Low cost hydrogen storage alloy, preparation method and application thereof
  • Low cost hydrogen storage alloy, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The design composition is La 0.62 Ce 0.27 PR 0.03 Nd 0.08 Ni 3.955 co 0.075 mn 0.52 Al 0.2 Cu 0.5 , according to the weight percentage of the composition shown, the prepared raw materials are placed in a vacuum induction quenching furnace, vacuumed and then filled with argon for protection, and then induction heating and melting is carried out at a melting temperature of 1300-1600 ° C, followed by casting Rapid cooling is carried out on a high-speed rotating copper roller with internal cooling water to obtain alloy flakes with a thickness of 0.1-0.3mm. The obtained alloy flakes are kept at 1000°C for 6.5 hours. After cooling, alloy powders with a particle size of less than 140 mesh are produced.

Embodiment 2

[0044] The design composition is La 0.634 Ce 0.257 PR 0.027 Nd 0.082 Ni 3.805 co 0.075 mn 0.52 Al 0.25 Cu 0.6 , except that the design components are different from embodiment 1, other are the same as embodiment 1.

Embodiment 3

[0056] The design composition is La 0.634 Ce 0.257 PR 0.027 Nd 0.082 Ni 3.675 co 0.075 mn 0.65 Al 0.05 Cu 0.8 , heat treatment process is 960 ℃ of insulation 6.5 hours, except that, others are the same as embodiment 1.

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
Granularityaaaaaaaaaa
Login to View More

Abstract

The invention discloses a low cost hydrogen storage alloy which is AB5 type alloy with the general formula of Laa M(1-a) Nib Coc Mnd Ale Cuf, wherein M is at least one in Ce, Pr, Nd, Pm, Sm, Dy, Y, Zr and Ti; a, b, c, d, e and f represent mole ratio with the number range: a is more than or equal to 0.3 and less than or equal to 0.8, b is more than 3.6 and less than or equal to 4.1, c is more than 0 and less than or equal to 0.15, d is more than or equal to 0.3 and less than or equal to 0.65, e is more than or equal to 0.04 and less than or equal to 0.35, f is more than or equal to 0.3 and less than or equal to 1.0, and the sum of b, c, d, e and f is more than or equal to 5.1 and less than or equal to 5.35. The hydrogen storage alloy has CaCu5 crystal structure, and the ratio (c / a) of lengths of c axis and an axis of the CaCu5 crystal structure is more than or equal to 0.81. The invention also discloses a preparation method of the hydrogen storage alloy as well as the application thereof in negative pole material of a nickel-metal hydride battery. The hydrogen storage alloy has low cost, good activation performance, large discharge capacity and long cycle life.

Description

technical field [0001] The invention relates to a hydrogen storage alloy and a preparation method thereof, and relates to the application of the alloy in negative electrode materials of nickel-hydrogen batteries. Background technique [0002] With the improvement of small Ni / MH battery capacity, environmental protection and pollution-free, and better safety, Ni / MH batteries have become the most powerful competitors in the secondary power supply market, especially in the field of digital product supporting applications in the past two years. , has highlighted a strong growth momentum. Hydrogen storage alloys are key materials that determine the performance of Ni / MH batteries. Hydrogen storage alloy is a new type of functional material, which uses the voids of the crystal to store a large amount of hydrogen atoms. This alloy has reversible hydrogen absorption and desorption capabilities at room temperature. It can store hydrogen equivalent to thousands of times the volume 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
IPC IPC(8): C22C19/03C22C1/02B22D11/06C22F1/10H01M4/38H01M4/24
CPCY02E60/124Y02E60/10
Inventor 张鹏杨金洪钱文连张永健蒋义淳陈永刚陈跃辉林建雄
Owner XIAMEN TUNGSTEN
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