Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of Zr base laves phase hydrogen storage alloy and preparation method thereof

A hydrogen storage alloy, zr-ti-v-al technology, which is applied in the field of hydrogen storage alloy materials, can solve the problems of excessive stability of hydride, hysteresis effect, and difficult decomposition, and achieve low equipment requirements, strong ultimate vacuum capability, and low cost low effect

Inactive Publication Date: 2015-11-18
NORTHWESTERN POLYTECHNICAL UNIV
View PDF5 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the hydrogen absorption kinetics of zirconium-based Laves phase hydrogen storage alloys are better than those of magnesium-based and lanthanum-based alloys, further improvement is needed, and their hydrides are too stable to decompose, and there is an obvious hysteresis effect when absorbing and releasing hydrogen.

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
  • A kind of Zr base laves phase hydrogen storage alloy and preparation method thereof
  • A kind of Zr base laves phase hydrogen storage alloy and preparation method thereof
  • A kind of Zr base laves phase hydrogen storage alloy and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] This embodiment is a Zr-Ti-V-Al hydrogen storage alloy, the Zr-Ti-V-Al hydrogen storage alloy is composed of a nuclear-grade sponge Zr block with a purity of 99.4%, a Ti plate of 99.97% and a Ti plate of 99.5%. V crystal, according to the chemical formula Zr 0.9 Ti0.1 (V 0.98 Al 0.02 ) 2 Prepared, the ratio is the atomic ratio.

[0031] This embodiment also proposes a method for preparing the Zr-Ti-V-Al hydrogen storage alloy, the specific process is:

[0032] Step 1, smelting. Put the weighed raw materials into a water-cooled copper crucible, and melt the weighed raw materials according to the conventional method. During smelting, vacuumize to 6×10 -3 , the alloy was smelted in a vacuum non-consumable arc melting furnace under the protection of argon atmosphere. In order to ensure that the alloy composition of the obtained as-cast hydrogen storage alloy ingot was uniform, the obtained hydrogen storage alloy ingot was turned over and remelted 4 times.

[0033] St...

Embodiment 2

[0039] This embodiment is a Zr-Ti-V-Al hydrogen storage alloy, the Zr-Ti-V-Al hydrogen storage alloy is composed of a nuclear-grade sponge Zr block with a purity of 99.4%, a Ti plate of 99.97% and a Ti plate of 99.5%. V crystal, according to the chemical formula Zr 0.9 Ti 0.1 (V 0.95 Al 0.05 ) 2 Prepared, the ratio is the atomic ratio.

[0040] This embodiment also proposes a method for preparing the Zr-Ti-V-Al hydrogen storage alloy, the specific process is:

[0041] Step 1, smelting. Put the weighed raw materials into a water-cooled copper crucible, and melt the weighed raw materials according to the conventional method. During smelting, vacuumize to 6×10 -3 , the alloy was smelted in a vacuum non-consumable arc melting furnace under the protection of argon atmosphere, and the as-cast hydrogen storage alloy ingot was obtained. In order to ensure the uniform composition of the alloy, the obtained hydrogen storage alloy ingot was turned over and remelted 4 times.

[00...

Embodiment 3

[0048] This embodiment is a Zr-Ti-V-Al hydrogen storage alloy, the Zr-Ti-V-Al hydrogen storage alloy is composed of a nuclear-grade sponge Zr block with a purity of 99.4%, a Ti plate of 99.97% and a Ti plate of 99.5%. V crystal, according to the chemical formula Zr 0.9 Ti 0.1 (V 0.9 Al 0.1 ) 2 Prepared, the ratio is the atomic ratio.

[0049] This embodiment also proposes a method for preparing the Zr-Ti-V-Al hydrogen storage alloy, the specific process is:

[0050] Step 1, smelting. Put the weighed raw materials into a water-cooled copper crucible, and melt the weighed raw materials according to the conventional method. During smelting, vacuumize to 6×10 -3 , the alloy was smelted in a vacuum non-consumable arc melting furnace under the protection of argon atmosphere, and the as-cast hydrogen storage alloy ingot was obtained. In order to ensure the uniform composition of the alloy, the obtained hydrogen storage alloy ingot was turned over and remelted 4 times.

[0051...

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

The invention discloses a Zr-based Laves phase hydrogen storage alloy and a preparation method thereof. The Zr-based Laves phase hydrogen storage alloy comprises 30 at. percent of Zr, 3.33 at. percent of Ti, totally 66.67 at. percent of V and Al including 1.33-16.67 at. percent of Al, and the balance of vanadium. The chemical formula of the Zr-based Laves phase hydrogen storage alloy is Zr0.9Ti0.1(V(1-x)Alx)2(x=0.02, 0.05, 0.10, 0.15 and 0.25) and is prepared through melting and vacuum annealing. On the basis of an AB2 ZrV2 alloy, a Ti element replaces A-side Zr element, and Al replaces a B-side V element; a uniform Laves phase is prepared from the alloy through the vacuum annealing; due to the Al element, the stability of an alloy hydride is lowered, the hysteresis effect of the hydrogen storage alloy in a hydrogen absorption and desorption process is improved, and the performance of the alloy is improved. The Zr-based Laves phase hydrogen storage alloy also has the characteristics of simple and feasible technology, high efficiency, low equipment requirement and low cost.

Description

technical field [0001] The invention relates to the technical field of hydrogen storage alloy materials, in particular to an ultra-low equilibrium pressure AB 2 Type Zr-Ti-V-Al hydrogen storage alloy and its preparation method. Background technique [0002] As a new type of functional material and energy source, hydrogen storage materials have the characteristics of large hydrogen storage capacity, low energy consumption, good environmental compatibility, low working pressure, and convenient use. Since the discovery of LaNi in the mid-1960s 5 Since the reversible hydrogen storage effect of intermetallic compounds such as FeTi, hydrogen storage alloys and their applications have been developed rapidly. In recent years, it has been widely used in the storage and transportation of hydrogen, the separation of hydrogen isotopes, temperature and pressure sensors, nickel-metal hydride rechargeable batteries and other fields. [0003] Hydrogen isotopes tritium and deuterium are w...

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 Patents(China)
IPC IPC(8): C22C16/00C22C1/02C22F1/18
Inventor 李金山张铁邦薛祥义吴天栋胡锐寇宏超
Owner NORTHWESTERN POLYTECHNICAL UNIV