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Solid hydrogen storage material for hydrogen refueling station and preparation method and application thereof

A hydrogen storage material and hydrogen refueling station technology, applied in chemical instruments and methods, hydrogen, inorganic chemistry, etc., can solve problems such as deviation of effective hydrogen storage, inability to refuel, and low decomposition pressure of hydrogen desorption balance, and achieve good cycle stability properties, excellent room temperature hydrogen absorption and desorption performance

Active Publication Date: 2021-08-06
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of the above-mentioned technical problems and the deficiencies in this field, the present invention provides a solid hydrogen storage material for a hydrogen refueling station, which is a TiCr-based high-entropy intermetallic compound high-pressure solid hydrogen storage material with a stable C14 Laves phase. It mainly solves the problem that the current hydrogen absorption and discharge platform pressure cannot effectively refuel solid-state hydrogen storage fuel cell vehicles under 10MPa hydrogen pressure
The present invention mainly starts from the configuration entropy control of the phase, and solves the problem of the TiCr base in the prior art by adding three specific ratios of metal elements Zr, Mn, and Fe in an equimolar ratio to the TiCr base. High-pressure solid-state hydrogen storage materials generally have problems such as low hydrogen desorption equilibrium decomposition pressure, too large hysteresis of hydrogen absorption and desorption pressure, and large deviation of effective hydrogen storage capacity.

Method used

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  • Solid hydrogen storage material for hydrogen refueling station and preparation method and application thereof
  • Solid hydrogen storage material for hydrogen refueling station and preparation method and application thereof
  • Solid hydrogen storage material for hydrogen refueling station and preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0033] The chemical composition of TiCr-based high-entropy intermetallic compounds is Ti 0.9 Zr 0.1 Cr 1.8 mn 0.1 Fe 0.1 , Calculate the addition amount of Ti, Zr, Cr, Mn, Fe elemental raw materials according to the above chemical formula. Among them, the purity of the Ti, Zr, Cr, Mn, and Fe elemental raw materials used is above 99%. The above raw materials are weighed according to the calculated addition amount after the surface is cleaned and dried. Put the weighed raw materials in the water-cooled copper crucible of the magnetic levitation induction melting furnace. After evacuating to a vacuum of 0.9 Zr 0.1 Cr 1.8 mn 0.1 Fe 0.1 Ingot casting of high-entropy intermetallic compounds.

Embodiment 2

[0035] The chemical composition of TiCr-based high-entropy intermetallic compounds is Ti 0.85 Zr 0.15 Cr 1.7 mn 0.15 Fe 0.15 , Calculate the addition amount of Ti, Zr, Cr, Mn, Fe elemental raw materials according to the above chemical formula. Among them, the purity of the Ti, Zr, Cr, Mn, and Fe elemental raw materials used is above 99%. The above raw materials are weighed according to the calculated addition amount after the surface is cleaned and dried. Put the weighed raw materials in the water-cooled copper crucible of the magnetic levitation induction melting furnace. After evacuating to a vacuum of 0.85 Zr 0.15 Cr 1.7 mn 0.15 Fe 0.15 Ingot casting of high-entropy intermetallic compounds.

[0036] The ingot XRD collection of illustrative plates of embodiment 1~2 is as figure 2 As shown, it can be found that the prepared Ti 1-x Zr x Cr 2-x mn x Fe x (x = 0.1, 0.15) high-entropy intermetallic compounds have a highly ordered single C14 Laves phase structure, ...

Embodiment 3

[0038] The MmNi of comparative example 1 and embodiment 1~2 5 Alloy, Ti 0.9 Zr 0.1 Cr 1.8 mn 0.1 Fe 0.1 、Ti 0.85 Zr 0.15 Cr 1.7 mn 0.15 Fe 0.15 The surface of the ingot is cleaned and polished, then mechanically pulverized and placed in a sealed container for evacuation for 1 hour, and then 100 bar high-purity hydrogen is filled into the container at room temperature (25°C) to absorb hydrogen for 0.5 hours to activate the ingot. The ingot is fully activated by hydrogen absorption and completely crushed into a powder sample to obtain a hydride sample; then vacuumized at 25°C for 15 minutes to obtain an active fully dehydrogenated material.

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Abstract

The invention discloses a solid hydrogen storage material for a hydrogen refueling station, a preparation method of the solid hydrogen storage material and application of the solid hydrogen storage material in the hydrogen refueling station with static hydrogen compression. The solid hydrogen storage material for the hydrogen refueling station is a TiCr-based high-entropy intermetallic compound with a stable C14 Laves phase, and the chemical general formula of the solid hydrogen storage material is Ti < 1-x > Zr < x > Cr < 2-x > Mn < x > Fe < x >, wherein x is greater than or equal to 0.1 and less than 0.2. The preparation method comprises the steps that a Ti < 1-x > Zr < x > Cr < 2-x > Mn < x > Fe < x > high-entropy intermetallic compound cast ingot is prepared, and hydrogen absorption state powder can be obtained through room-temperature hydrogen absorption activation.

Description

technical field [0001] The invention relates to the field of solid-state hydrogen storage, in particular to a hydrogen source device and hydrogen filling of a high-safety low-voltage solid-state hydrogen storage vehicle-mounted fuel cell. Background technique [0002] The development and utilization of hydrogen energy can effectively alleviate the shortage of fossil energy and environmental pollution. The development of hydrogen fuel cell vehicles is inseparable from the construction of basic supporting facilities for hydrogen refueling stations. The source of hydrogen in the hydrogen refueling station is mainly transported from the hydrogen production plant to the hydrogen refueling station through long-tube trailers, liquid hydrogen tank trucks or hydrogen pipelines. It is compressed by a hydrogen compressor and transported into a high-pressure hydrogen storage bottle for storage. The air engine is filled into hydrogen energy fuel cell vehicles for use. According to the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C30/00C22C1/02B22F9/02C01B3/00
CPCC22C30/00C22C1/02B22F9/023C01B3/0031Y02E60/32
Inventor 肖学章朴明远陈立新周盼盼曹子鸣詹刘军
Owner ZHEJIANG UNIV
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