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Ultrahigh pressure metal hydride hydrogen compression material

A hydride and ultra-high pressure technology, which is applied in the field of hydrogen compressor materials and ultra-high pressure metal hydride hydrogen compression materials, can solve the problems of large hydrogen absorption and desorption hysteresis, difficult activation, and failure to meet requirements, and achieve hydrogen absorption and desorption hysteresis Small, easy to activate, avoiding the effect of energy consumption

Inactive Publication Date: 2016-07-13
GENERAL RESEARCH INSTITUTE FOR NONFERROUS METALS BEIJNG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the pressure target of the on-board hydrogen storage system has been developed from 35MPa to 70MPa, and the hydrogen supply pressure of 45MPa is obviously unable to meet the requirements. Therefore, it is necessary to develop metal hydride hydrogen compression materials with higher hydrogen release pressure.
ZrFe 2 The hydrogen release pressure of the alloy hydride can reach 65MPa at 45°C, but its hydrogen absorption and release hysteresis is relatively large, and its activation is difficult. The comprehensive hydrogen compression performance of the material can be improved by alloying it

Method used

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  • Ultrahigh pressure metal hydride hydrogen compression material
  • Ultrahigh pressure metal hydride hydrogen compression material
  • Ultrahigh pressure metal hydride hydrogen compression material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Preparation of ZrFe 2.05 Alloy (the alloy composition is the atomic percentage, at.%, the same below): the starting material is the commercial metal element zirconium sponge and rod iron, the element purity is higher than 99%, according to the nominal composition ZrFe 2.05 After being formulated into an alloy, it is repeatedly smelted three times in a high-frequency suspension melting furnace protected by a high-purity Ar (99.999%) atmosphere to produce an alloy ingot with a weight of about 30 g. The alloy ingot was sealed into an argon-protected quartz tube and annealed at 800°C for 72h. Then quench the quartz tube into cold water, and take out the alloy ingot after cooling.

[0028] The alloy ingot is mechanically crushed, and about 1 g of sample is taken, which is mechanically ground into powder below 300 mesh and analyzed by X-ray diffraction. The X-ray diffraction spectrum is as follows: figure 1 (a) shows that the alloy is a single C15 type Laves phase structure...

Embodiment 2

[0030] Preparation of Zr 0.9 Ti 0.1 Fe 1.95 V 0.1 Mmm 0.015Alloy: starting materials are commercial metal elements sponge titanium, sponge zirconium, rod iron, granular vanadium and massive cerium-rich rare earth Mm, the element purity is higher than 99%, and the composition of cerium-rich rare earth Mm is: Ce52.5%, La30 .4%, Nd11.4%, Pr4.5%, other elements 1.2%. Formulated to a nominal composition of Zr 0.9 Ti 0.1 Fe 1.95 V 0.1 Mmm 0.015 The alloy is smelted into a flake alloy with a weight of about 10kg in an intermediate frequency induction melting furnace protected by a high-purity Ar (99.999%) atmosphere, and the alloy material is placed in a vacuum heat treatment furnace, annealed at 900 ° C for 24 hours, and cooled Then remove the alloy material.

[0031] Carry out X-ray imaging diffraction analysis to alloy sample, analysis method is the same as embodiment 1. Its X-ray diffraction spectrum is as figure 1 As shown in (b), the main phase in the alloy is a C15...

Embodiment 3

[0034] Preparation of Zr 0.85 Ti 0.15 Fe 1.95 V 0.1 Mmm 0.015 Alloy: starting materials are commercial metal elements sponge titanium, sponge zirconium, rod iron, granular vanadium and massive cerium-rich rare earth Mm, the element purity is higher than 99%, and the composition of cerium-rich rare earth Mm is: Ce52.5%, La30 .4%, Nd11.4%, Pr4.5%, other elements 1.2%, formulated to have a nominal composition of Zr 0.85 Ti 0.15 Fe 1.95 V 0.1 Mmm 0.015 alloy, and then smelted into an alloy ingot with a weight of about 30g. The alloy ingot smelting method, heat treatment method, X-ray diffraction analysis method, activation method and hydrogen absorption and desorption PCT curve test method are the same as in Example 2. Its X-ray diffraction spectrum is as figure 1 As shown in (c), the main phase in the alloy is a C15-type Laves phase structure, and contains a small amount of C14-type Laves phase structure.

[0035] The test results show that the alloy can be fully activ...

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Abstract

The invention discloses an ultrahigh pressure metal hydride hydrogen compression material. The material is a hydrogen storage alloy, and the chemical composition of the material is ZrxTiyFezMwMmy, wherein M is Ni, V, Mn, Cu, Co or a combination thereof; and x, y, z and w respectively represent the atom ratios of Zr, Ti, Fe and M, v is the molar content of cerium-rich rare earth Mm in the alloy, x is 0.5-1.0, y is 0-0.5, z is 1.5-2.5, w is 0-0.5, and v is 0-0.05. The metal hydride hydrogen compression material has the advantages of easy activation, small hydrogen absorption and release hysteresis, good alloy dynamics performances, realization of hydrogen absorption saturation within 100s, and good alloy efflorescence resistance. The metal hydride hydrogen compression material provides a product hydrogen pressure of 110MPa at 95DEG C or below, provides a product hydrogen pressure of 150MPa at 110DEG C or below, and can effectively utilize solar energy and industrial waste heat to provide heat required by hydrogen release of the material in order to avoid energy consumed by electric heating.

Description

technical field [0001] The invention relates to a material used in a hydrogen compressor, in particular to an ultra-high pressure metal hydride hydrogen compression material, which belongs to the technical field of metal hydride hydrogen compression. Background technique [0002] Hydrogen is an ideal clean fuel and an important secondary energy source in the future. With the rapid development of hydrogen-fueled fuel cells and electric vehicles, the research and construction of vehicle-mounted hydrogen storage technology and hydrogen energy infrastructure have attracted widespread attention in various countries, but the traditional mechanical hydrogen compressor has the disadvantages of large volume and mass. The disadvantages of heavy weight, high power consumption, high water consumption, and low energy efficiency make it difficult to meet the requirements of efficient on-board hydrogen storage technology. Therefore, metal hydride hydrogen compression technology has become ...

Claims

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Application Information

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IPC IPC(8): C22C38/14
Inventor 郭秀梅涂有龙李志念叶建华袁宝龙王树茂刘晓鹏蒋利军
Owner GENERAL RESEARCH INSTITUTE FOR NONFERROUS METALS BEIJNG
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