Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A low-temperature activated vanadium-based hydrogen storage alloy and its preparation method and application

A low-temperature activation and hydrogen storage alloy technology, applied in chemical instruments and methods, hydrogen, inorganic chemistry, etc., can solve the problems of troublesome processing and increased raw material costs, reduce the activation temperature, facilitate large-scale promotion and use, and have broad application prospects Effect

Active Publication Date: 2022-08-05
深圳国科氢源科技有限公司
View PDF10 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, although the activation method can achieve direct activation at 25°C, it requires ball milling and mixing of hydrogen storage alloy materials and metal hydrides (such as aluminum hydride), which is not only cumbersome to handle, but also increases the cost of raw materials

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A low-temperature activated vanadium-based hydrogen storage alloy and its preparation method and application
  • A low-temperature activated vanadium-based hydrogen storage alloy and its preparation method and application
  • A low-temperature activated vanadium-based hydrogen storage alloy and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0080] This embodiment provides a low-temperature activated vanadium-based hydrogen storage alloy, and the element composition of the low-temperature activated vanadium-based hydrogen storage alloy is Ti 0.05 Cr 0.15 V 0.8 Ce 0.02 ;

[0081] Prepared by the following preparation method:

[0082] (1) batching: according to the atomic ratio, weigh elemental metal with a purity of ≥99.9 wt.% and perform batching to obtain a mixture;

[0083] (2) smelting: the mixture described in step (1) is loaded into the water-cooled copper mold of the non-consumable vacuum arc furnace, then placed in the vacuum arc furnace and smelted under the protection of argon, the current in the smelting It is 200A, and the single melting time is 150s. After the single melting, let the alloy cool down to room temperature with the copper crucible, turn it over, and then carry out a new melting, and repeat the melting for 4 times to obtain the alloy ingot;

[0084] Wherein, the alloy ingot includes a ...

Embodiment 2

[0089] This embodiment provides a low-temperature activated vanadium-based hydrogen storage alloy, and the element composition of the low-temperature activated vanadium-based hydrogen storage alloy is Ti 0.05 Cr 0.15 V 0.8 Ce 0.01 That is, "x=0.02" in Example 1 is changed to "x=0.01", and other conditions are exactly the same as Example 1.

[0090] The XRD spectrum of the low-temperature activated vanadium-based hydrogen storage alloy described in this embodiment is as follows figure 1 As shown, the alloy includes the BCC phase and contains CeO 2 Components and VH 0.81 ;

[0091] Put the low-temperature activated vanadium-based hydrogen storage alloy described in this example into the stainless steel reaction vessel, and use the PCT hydrogen absorption and desorption test equipment to carry out the hydrogen absorption and desorption performance test: in the case of no activation, at 8MPa H 2 and the first hydrogen absorption at room temperature of 25 °C, at 0.1 MPa H 2 ...

Embodiment 3

[0093] This embodiment provides a low-temperature activated vanadium-based hydrogen storage alloy, and the element composition of the low-temperature activated vanadium-based hydrogen storage alloy is Ti 0.05 Cr 0.15 V 0.8 Ce 0.05 That is, "x=0.02" in Example 1 is changed to "x=0.05", and other conditions are exactly the same as Example 1.

[0094] The XRD spectrum of the low-temperature activated vanadium-based hydrogen storage alloy described in this embodiment is as follows figure 1 As shown, the alloy includes the BCC phase and contains CeO 2 Components and VH 0.81 ;

[0095] Put the low-temperature activated vanadium-based hydrogen storage alloy described in this example into the stainless steel reaction vessel, and use the PCT hydrogen absorption and desorption test equipment to carry out the hydrogen absorption and desorption performance test: in the case of no activation, at 8MPa H 2 and the first hydrogen absorption at room temperature of 25 °C, at 0.1 MPa H 2 ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
particle sizeaaaaaaaaaa
particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention relates to a low-temperature activated vanadium-based hydrogen storage alloy, a preparation method and application thereof. The element composition of the low-temperature activated vanadium-based hydrogen storage alloy is Ti a Cr b V c RE x ; wherein, RE includes one or a combination of at least two of La, Ce or Y, a=0.025-0.225, b=0.075-0.675, c=0.1-0.9, and a+b+c=1; x= 0.01-0.1, by adding rare earth element RE and controlling its content, the prepared vanadium-based hydrogen storage alloy can be directly activated at low temperature on the basis of ensuring high hydrogen absorption and desorption, without the need for high temperature or high pressure. activation process, and the preparation method has the characteristics of being simple, fast and effective.

Description

technical field [0001] The invention relates to the technical field of hydrogen storage alloys, in particular to a low-temperature activated vanadium-based hydrogen storage alloy and a preparation method and application thereof. Background technique [0002] Hydrogen energy has become the most ideal clean energy in the 21st century due to its high efficiency, non-polluting and renewable advantages. However, there are still some technical barriers in the preparation, storage and application of hydrogen energy, among which the high cost of hydrogen energy storage in use restricts the development of the hydrogen energy industry. Solid-state hydrogen storage is one of the effective ways to reduce the cost of hydrogen storage, and it can become the most promising development direction for the hydrogen storage part of the hydrogen fuel cell industry. [0003] Among many hydrogen storage alloys, titanium-vanadium-based solid solution has become one of the most promising high-capac...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C22C27/02C01B3/00C22C1/02
CPCC22C27/025C22C1/02C01B3/0052Y02E60/32
Inventor 陈庆军薛晓艺马传明
Owner 深圳国科氢源科技有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com