Zr-Ti-Cr-V complex phase hydrogen storage alloy and preparing method thereof

A zr-ti-cr-v, hydrogen storage alloy technology, applied in the field of hydrogen storage materials, can solve the problem of rarely being able to have both, achieves a fast hydrogen absorption rate, is conducive to nucleation and hydrogen diffusion, increase The effect of lattice distortion

Active Publication Date: 2018-08-17
江西新节氢能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Although the researchers were concerned about the AB 2 Extensive studies have been carried out on Zr-based Laves phase hydrogen storage alloys, showing that alloying can improve the hydrogen absorption kinetics and increase the hydrogen absorption capacity, but the two are rarely achieved at the same time.

Method used

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  • Zr-Ti-Cr-V complex phase hydrogen storage alloy and preparing method thereof
  • Zr-Ti-Cr-V complex phase hydrogen storage alloy and preparing method thereof
  • Zr-Ti-Cr-V complex phase hydrogen storage alloy and preparing method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The design alloy composition is ZrTi 0.2 Cr 0.2 V 2 , The ratio is an atomic ratio; the purity of the Zr, Ti, Cr and V raw materials used in the experiment are 99.4%, 99.97%, 99.7% and 99.5% respectively.

[0028] The preparation process of this embodiment is:

[0029] Step 1, vacuum melting. Put Zr, Ti, Cr and V raw materials into a vacuum arc melting furnace at an atomic ratio of 1:0.2:0.2:2 for melting, fill the melting furnace with argon as a protective atmosphere, and apply magnetic stirring during the melting process to make the ingredients uniform; The solidified ingot is turned up and down, and the alloy ingot is obtained after repeated melting 3 times;

[0030] Step 2, vacuum packaging. Put the obtained alloy ingot into a quartz tube, use argon to purge the inside of the quartz tube, and at the same time evacuate the quartz tube until the vacuum degree reaches 1×10 -3 Complete the sealing of the quartz tube at Pa;

[0031] Step 3, heat treatment. Put th...

Embodiment 2

[0034] The design alloy composition is ZrTi 0.4 Cr 0.1 V 1.8 , The ratio is an atomic ratio; the purity of the Zr, Ti, Cr and V raw materials used in the experiment are 99.4%, 99.97%, 99.7% and 99.5% respectively.

[0035] The preparation process of this embodiment is:

[0036] Step 1, vacuum melting. Put Zr, Ti, Cr and V raw materials into a vacuum arc melting furnace at an atomic ratio of 1:0.4:0.1:1.8 for melting, fill the melting furnace with argon as a protective atmosphere, and apply magnetic stirring during the melting process to make the ingredients uniform; The solidified ingot is turned up and down, and the alloy ingot is obtained after repeated melting 5 times;

[0037] Step 2, vacuum packaging. Put the obtained alloy ingot into a quartz tube, use argon to purge the inside of the quartz tube, and at the same time evacuate the quartz tube until the vacuum degree reaches 1×10 -3 Complete the sealing of the quartz tube at Pa;

[0038] Step 3, heat treatment. Pu...

Embodiment 3

[0041] The design alloy composition is ZrTi 0.6 Cr 0.2 V 1.9 , The ratio is an atomic ratio; the purity of the Zr, Ti and V raw materials used in the experiment are 99.4%, 99.97% and 99.5% respectively.

[0042] The preparation process of this embodiment is:

[0043] Step 1, vacuum melting. Put Zr, Ti, Cr and V raw materials into a vacuum arc melting furnace at an atomic ratio of 1:0.6:0.2:1.9 for melting, fill the melting furnace with argon as a protective atmosphere, and apply magnetic stirring during the melting process to make the ingredients uniform; The solidified ingot is turned up and down, and the alloy ingot is obtained after repeated melting 5 times;

[0044] Step 2, vacuum packaging. Put the obtained alloy ingot into a quartz tube, use argon to purge the inside of the quartz tube, and at the same time evacuate the quartz tube until the vacuum degree reaches 1×10 -3 Complete the sealing of the quartz tube at Pa;

[0045] Step 3, heat treatment. Put the vacuu...

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Abstract

The invention discloses a Zr-Ti-Cr-V complex phase hydrogen storage alloy and a preparing method thereof. The hydrogen storage alloy is composed of Zr, Ti, Cr and V; the atomic ratio is 1:0.2-0.6:0.1-0.6:1.8-2.1. Through component design of the non-stoichiometric ratio, through vacuum heat treatment, a C15 type Laves phase, V-rich solid solution and Zr-rich solid solution coexistence complex phasestructure with the specific proportion can be formed in the alloy. The alloy room temperature hydrogen absorbing amount can reach 2.80wt%, and the excellent hydrogen absorbing dynamics property can be achieved.

Description

technical field [0001] The invention relates to the field of hydrogen storage materials, in particular to a Zr-Ti-Cr-V hydrogen storage alloy. Background technique [0002] The safe and efficient storage of hydrogen is an important part of the development and utilization of hydrogen energy. Hydrogen storage methods include high-pressure gaseous hydrogen storage, liquid hydrogen storage, and hydrogen storage using hydrogen storage materials. Among them, the gaseous hydrogen storage method has a low hydrogen storage density and low safety; the liquid hydrogen storage method has high energy consumption, high cost, and high requirements for the insulation of the storage tank; and the use of hydrogen storage materials to absorb hydrogen through physical or chemical reactions It is an emerging hydrogen storage method. Due to the advantages of high hydrogen storage density, reversible hydrogen absorption and desorption, safety and reliability, hydrogen storage alloys are a type o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C30/00C22C1/02C22F1/02
CPCC22C1/02C22C27/025C22C30/00C22F1/02
Inventor 张云龙李若琳卢雅琳于赟李小平陈逸程亮
Owner 江西新节氢能源科技有限公司
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