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Novel transition metal aluminum hydride and preparation method thereof

A transition metal, aluminum hydride technology, applied in the field of new transition metal aluminum hydride and its preparation, can solve the problems of low reversible hydrogen storage capacity, difficulty in reaching the target, etc., and achieve high hydrogen storage capacity, low cost and easy operation. Effect

Active Publication Date: 2020-09-25
NINGXIA UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In order to develop hydrogen storage materials that meet the requirements of the vehicle-mounted composite hydrogen storage system, researchers have carried out research on the modification of various hydrogen storage materials in recent years, mainly including TiCr 2 base and ZrFe 2 Base AB 2 Type hydrogen storage alloys and V-based BCC type hydrogen storage alloys, however, the reversible hydrogen storage capacity of these alloys under a specific hydrogen pressure is often low (<2wt%), and it is difficult to achieve 3-4wt% hydrogen storage materials for vehicle-mounted composite hydrogen storage systems The goal

Method used

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  • Novel transition metal aluminum hydride and preparation method thereof
  • Novel transition metal aluminum hydride and preparation method thereof
  • Novel transition metal aluminum hydride and preparation method thereof

Examples

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Effect test

Embodiment 1

[0031] In a glove box protected by an argon atmosphere, the YbCl 3 and LiAlH 4 According to the molar ratio of 1:3, it is mixed with stainless steel balls and put into the ball mill tank, the ball-to-material ratio is 40:1; the gas in the ball mill tank is pumped out by a vacuum pump and then filled with hydrogen. This process is repeated three times, and then filled with 5MPa Hydrogen: put the ball mill tank filled with hydrogen into the planetary ball mill, the program is to stop for 10 minutes after every 30 minutes of ball milling, and obtain Yb(AlH 4 ) 3 .

Embodiment 2

[0033] In a glove box protected by an argon atmosphere, the YbCl 3 and LiAlH 4 According to the molar ratio of 1:3, it is mixed with stainless steel balls and put into the ball mill tank, the ball-to-material ratio is 40:1; the gas in the ball mill tank is pumped out by a vacuum pump and then filled with hydrogen. This process is repeated three times, and then filled with 8MPa Hydrogen: put the ball mill tank filled with hydrogen into the planetary ball mill, the program is to stop for 10 minutes after every 30 minutes of ball milling, and obtain Yb(AlH 4 ) 3 .

Embodiment 3

[0035] In a glove box protected by an argon atmosphere, the YbCl 3 and LiAlH 4 According to the molar ratio of 1:3, it is mixed with stainless steel balls and put into the ball milling tank, the ball-to-material ratio is 40:1; the gas in the ball milling tank is pumped out by a vacuum pump and then filled with hydrogen. This process is repeated three times, and then filled with 10MPa Hydrogen: put the ball mill tank filled with hydrogen into the planetary ball mill, the program is to stop for 10 minutes after every 30 minutes of ball milling, and obtain Yb(AlH 4 ) 3 .

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Abstract

The invention discloses a novel transition metal aluminum hydride and a preparation method thereof, belonging to the technical field of solid hydrogen storage materials. The transition metal aluminumhydride is ytterbium aluminum hydride. The preparation method comprises the following steps: mixing ytterbium chloride and lithium aluminum hydride according to a certain molar ratio, and carrying outsufficient ball milling in a hydrogen atmosphere. The prepared transition metal aluminum hydride has the advantages of being high in hydrogen storage capacity, low in hydrogen desorption temperatureand high in hydrogen desorption rate; and the preparation method is simple in preparation process, low in cost and suitable for large-scale production.

Description

technical field [0001] The invention relates to the technical field of solid hydrogen storage materials, in particular to a novel transition metal aluminum hydride and a preparation method thereof. Background technique [0002] Hydrogen storage technology is a key link in the large-scale application of hydrogen energy. At present, hydrogen storage technologies mainly include three categories: high-pressure gaseous hydrogen storage, liquid hydrogen storage and solid-state hydrogen storage. The mass hydrogen storage density of high-pressure gaseous hydrogen storage is relatively high, but the cost is high and the safety hazard is great, so it is not suitable for long-distance transportation; Hydrogen is extremely volatile, which is not conducive to long-term use; solid-state hydrogen storage materials have high volumetric hydrogen storage density and good safety, and are currently one of the most promising hydrogen storage methods. However, high-capacity hydrogen storage mate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01F17/30C01F17/10C01B3/00
CPCC01F17/30C01F17/10C01B3/001C01P2002/72C01P2002/88Y02E60/32
Inventor 曹志杰李丽江马晓波
Owner NINGXIA UNIVERSITY
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