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Hydrogen storing apparatus of metal hydrides and manufacturing method thereof

A hydride and hydrogen storage technology, applied in the field of transportation and compression, hydrogen storage, can solve the problems of excessive accumulation, poor thermal conductivity of metal hydride powder, slow hydrogen absorption and desorption speed, etc., to prevent flow and local accumulation, long-term operation Safe and reliable, the effect of improving heat transfer performance

Active Publication Date: 2009-04-22
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The existing problems are: on the one hand, due to the poor thermal conductivity of the metal hydride powder itself (equivalent to that of glass and sandstone), it is impossible to input heat into the hydrogen storage device or output heat from the hydrogen storage device in time, so that When hydrogen is inhaled, the temperature of the hydrogen storage alloy rises sharply, and when the hydrogen is released, the temperature of the hydrogen storage alloy drops rapidly, which causes the speed of hydrogen absorption and desorption to slow or even stop; on the other hand, the fluidity of the hydrogen storage alloy fine powder is good, and the During the operation, due to the drive of the hydrogen flow, it is easy to form excessive local accumulation in the hydrogen storage device, which will cause deformation or damage to the container
Hydrogen storage alloys can still undergo reversible hydrogen absorption and desorption reactions in such organic solvents, the heat transfer performance is improved, and the container will not swell. However, due to the addition of a large amount of organic solvents that do not absorb hydrogen, the unit weight of the hydrogen storage device and the hydrogen storage density per unit volume are greatly reduced

Method used

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  • Hydrogen storing apparatus of metal hydrides and manufacturing method thereof
  • Hydrogen storing apparatus of metal hydrides and manufacturing method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0029] The non-hydrogen-absorbing foamed metal substrate in the metal hydride hydrogen storage device adopts a foamed aluminum substrate with a porosity of 91% and a thickness of 15 mm. The cylindrical shell of the hydrogen storage device is made of aluminum alloy with an inner diameter of 80 mm; the hydrogen storage alloy is a rare earth hydrogen storage alloy Mm 0.8 Ca 0.2 Ni 5 , where Mm is a mixed rare earth metal. Mm 0.8 Ca 0.2 Ni 5 The alloy is crushed to form a powder with a particle size not greater than 0.2 mm; then Mm 0.8 Ca 0.2 Ni 5 Mix the alloy powder with a 3% PVA aqueous solution (the amount added is one-tenth of the weight of the hydrogen storage alloy powder) to form a paste, then smear it into the pores of the foamed aluminum substrate, and heat it at 30 ° C. Completely dry to form a hydrogen storage material sheet; then cut the dried hydrogen storage material sheet into a disc with an outer diameter of 80 mm, and make a circular hole with a diameter ...

Embodiment 2

[0032] The non-hydrogen-absorbing foamed metal substrate in the metal hydride hydrogen storage device adopts a foamed copper substrate with a porosity of 95% and a thickness of 10 mm. The shell of the hydrogen storage device is made of stainless steel with an inner diameter of 63 mm; the hydrogen storage alloy is titanium-based TiFe 0.85 mn 0.15 alloy. TiFe 0.85 mn 0.15 The alloy is crushed to form a powder with a particle size of no more than 0.2 mm, and then mixed with a CMC aqueous solution with a mass concentration of 1.5% (the amount added is one tenth of the weight of the alloy powder) to make a paste, and then smeared and filled into the foamed copper substrate In the pores, and completely dried at 50 ℃ to form a hydrogen storage material sheet; then the dried hydrogen storage material sheet is cut into many discs with an outer diameter of 63 mm, and a hole diameter of 6 mm is made in the center of the disc. Round holes; then stack the hydrogen storage material shee...

Embodiment 3

[0034] The non-hydrogen-absorbing foamed metal substrate in the metal hydride hydrogen storage device adopts a foamed nickel substrate with a porosity of 98% and a thickness of 2 mm. The shell of the hydrogen storage device is made of stainless steel, with an inner diameter of 50 mm; the hydrogen storage alloy is titanium vanadium BCC alloy Ti 0.16 Cr 0.22 V 0.52 Fe 0.05 Zr 0.05 . Ti first 0.16 Cr 0.22 V 0.52 Fe 0.05 Zr 0.05 The alloy is crushed to form a powder with a particle size of no more than 0.15 mm, and then mixed with a PVA aqueous solution with a mass concentration of 3% (the amount added is one tenth of the weight of the alloy powder) to make a paste, and then smeared and filled into the foamed nickel substrate The pores of the hydrogen storage material are completely dried at 60°C to form a hydrogen storage material sheet; then the dried hydrogen storage material sheet is cut into many discs with an outer diameter of 50 mm, and a hole diameter of 3 mm is m...

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Abstract

The invention relates to a metal hydride hydrogen storage device and a preparation method thereof; wherein, the device comprises a shell which is filled in superposed hydrogen-storage material sheet which consists of a spumescent metal substrate which absorbs no hydrogen and mixture of hydrogen-storage alloy powder and adhesive which are filled in the gap of the spumescent metal substrate; the hydrogen-storage material sheet is provided with a central hole which is coincident to the central hole of the shell head and is connected with the central hole of the head by a filter sheet which is embedded in the head; the central hole of the head is fixed with a joint pipe which is provided with a valve. The hydrogen storage device can effectively improve the heat transmission performance of the hydrogen storage alloy and hydride powder, effectively prevents the flowing and accumulating of the hydrogen-storage alloy and the hydride, solves the hydrogen absorption expansion problem of the hydrogen storage alloy powder, thus having the advantages of high-efficiency running, safety and reliability and being suitable for the production of meta hydride hydrogen-storage devices applied to various sites.

Description

technical field [0001] The invention relates to a metal hydride hydrogen storage device and a manufacturing method thereof, belonging to the technical field of hydrogen storage, transportation and compression. Background technique [0002] Hydrogen is an ideal clean fuel and an important secondary energy source in the future. At present, there are mainly three methods of hydrogen storage and transportation in practical application: hydrogen storage in high-pressure containers, hydrogen storage in liquid hydrogen storage tanks, and solid-state hydrogen storage in hydride hydrogen storage devices. The outstanding advantages of using metal hydride hydrogen storage devices to store and transport hydrogen are good safety, and the hydrogen storage density per unit weight is much higher than that of high-pressure containers and liquid hydrogen storage tanks. [0003] A metal hydride hydrogen storage device can be formed by putting the metal hydride hydrogen storage alloy into a co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F17C11/00
CPCY02E60/321Y02E60/32
Inventor 陈立新陈长聘肖学章杭州明王新华李寿权
Owner ZHEJIANG UNIV
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