Zirconium-vanadium based hydrogen storage alloy thin strip and preparation method thereof

A hydrogen storage alloy, zirconium vanadium-based technology, applied in chemical instruments and methods, hydrogen, reversible hydrogen absorption, etc., can solve the problems of poor hydrogen absorption kinetics, limited application range, high activation temperature, etc., and achieve excellent hydrogen absorption Kinetics, satisfying the effect of rapid hydrogen absorption and high hydrogen storage capacity

Inactive Publication Date: 2019-03-15
JIANGSU UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, ZrV 2 The kinetics of hydrogen absorption is not good, and the activation temperature is high (600°C), so it cannot be used in a special vacuum environment with a low heating temperature, which limits its application range to a certain extent.

Method used

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  • Zirconium-vanadium based hydrogen storage alloy thin strip and preparation method thereof
  • Zirconium-vanadium based hydrogen storage alloy thin strip and preparation method thereof
  • Zirconium-vanadium based hydrogen storage alloy thin strip and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Step 1, smelting. The raw materials zirconium sponge, metal vanadium, titanium sponge and electrolytic manganese sheet (purity not less than 99.5%) according to the molecular formula ZrV 2 Ti 0.1 mn 0.1 The proportion of prepared, placed in a water-cooled copper crucible in a vacuum non-consumable arc melting furnace (Mn is placed at the bottom of the crucible). Vacuum the furnace to 6×10 -3 Below Pa, fill it with argon to 0.07MPa as a protective atmosphere. The tungsten pole in the vacuum non-consumable arc melting furnace is energized to start the arc, the current is gradually increased and the magnetic stirring function is turned on for 5 minutes for melting. The upper and lower surfaces of the cooled ingot are turned over, and the above-mentioned process of energizing arc ignition-stirring smelting-cooling and solidification is repeated three times to obtain an alloy ingot with uniform composition.

[0023] Step 2, preparing thin alloy strips. Part of the samp...

Embodiment 2

[0027] Step 1, smelting. The raw materials zirconium sponge, metal vanadium, titanium sponge and electrolytic manganese sheet (purity not less than 99.5%) according to the molecular formula ZrV 2 Ti 0.2 mn 0.1 The proportion of prepared, placed in a water-cooled copper crucible in a vacuum non-consumable arc melting furnace (Mn is placed at the bottom of the crucible). Vacuum the furnace to 6×10 -3 Below Pa, fill it with argon to 0.07MPa as a protective atmosphere. The tungsten pole in the vacuum non-consumable arc melting furnace is energized to start the arc, the current is gradually increased and the magnetic stirring function is turned on for 5 minutes for melting. The upper and lower surfaces of the cooled ingot are turned over, and the above-mentioned process of energizing arc ignition-stirring smelting-cooling and solidification is repeated three times to obtain an alloy ingot with uniform composition.

[0028] Step 2, preparing thin alloy strips. Part of the samp...

Embodiment 3

[0032] Step 1, smelting. The raw materials zirconium sponge, metal vanadium, titanium sponge and electrolytic manganese sheet (purity not less than 99.5%) according to the molecular formula ZrV 2 Ti 0.3 mn 0.1 The proportion of prepared, placed in a water-cooled copper crucible in a vacuum non-consumable arc melting furnace (Mn is placed at the bottom of the crucible). Vacuum the furnace to 6×10 -3 Below Pa, fill it with argon to 0.07MPa as a protective atmosphere. The tungsten pole in the vacuum non-consumable arc melting furnace is energized to start the arc, the current is gradually increased and the magnetic stirring function is turned on for 5 minutes for melting. The upper and lower surfaces of the cooled ingot are turned over, and the above-mentioned process of energizing arc ignition-stirring smelting-cooling and solidification is repeated three times to obtain an alloy ingot with uniform composition.

[0033] Step 2, preparing thin alloy strips. Part of the samp...

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Abstract

The invention belongs to the technical field of hydrogen storage alloy materials, and particularly relates to a zirconium-vanadium based hydrogen storage alloy thin strip and a preparation method thereof. The alloy consists of Zr, V, Ti and Mn, and has a molecular formula of ZrV2TixMny, wherein x is equal to 0.1-0.4, y is equal to 0.1-0.2; and the alloy has a complex-phase structure which takes aC15type Laves phase as the principal thing, and takes V-based sosoloid, and a Zr-based sosoloid as well as Zr3V3O phase as auxiliary things. The prepared alloy thin strip has a relatively low activation temperature, is simple in activation process, has excellent hydrogen absorption kinetics and relatively high hydrogen storage amount, and can meet quick hydrogen absorption needs.

Description

technical field [0001] The invention belongs to the technical field of hydrogen storage alloy materials, and in particular relates to a zirconium vanadium-based hydrogen storage alloy strip and a preparation method thereof. Background technique [0002] With the increasingly serious environmental pollution and the depletion of fossil energy, it has become a global consensus to use hydrogen energy, a clean energy source, to replace existing energy sources based on fossil fuels. The safe and efficient storage and release of hydrogen is the key to the utilization of hydrogen energy one. Compared with the low weight ratio and safety of gaseous hydrogen storage and the high cost and energy consumption of liquid hydrogen storage, the advantages of hydrogen storage alloys are high hydrogen storage density, safety and reliability. Many alloy series such as rare earth series, titanium series, zirconium series and magnesium series have been developed. Zirconium-based hydrogen storag...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C27/02C22C30/00C22C1/02B22D11/06C01B3/00
CPCB22D11/062C01B3/0031C01B3/0084C22C1/02C22C27/025C22C30/00Y02E60/32
Inventor 张云龙李若琳李小平于赟陈逸程亮卢雅琳
Owner JIANGSU UNIV OF TECH
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