Hydrogen storage alloy for vehicle-mounted energy storage

A hydrogen storage alloy and energy storage technology, applied in the field of alloy materials, can solve the problems of slow hydrogen absorption/desorption, high hydrogen release temperature, poor reaction kinetic performance, etc., and achieve large discharge capacity, hydrogen storage capacity, and discharge capacity. Excellent effect of high, retention and residual magnetization properties

Active Publication Date: 2017-12-29
浙江蓝能氢能科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing magnesium-based hydrogen storage alloys have poor electrochemical cycle stability, poor reaction kinetics, slow hydrogen absorption / desorption rate and high hydrogen release temperature, which limit the commercialization of magnesium-based hydrogen storage alloys. There is an urgent need to modify existing magnesium-based hydrogen storage alloys

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A hydrogen storage alloy for vehicle-mounted energy storage, characterized in that, in the crystal structure of the finished hydrogen storage alloy, AB 2 Structure and A 5 B 19 The sum of the constituent ratios of the structure is 40%. The preparation steps are as follows: (1) Vacuum the intermediate frequency melting furnace, and when the vacuum reaches 0.1~1Pa, argon gas is introduced; (2) press La 0.2 Ce 0.5 Ti 1.5 Mg 3.7 Ni 0.2 co 2.2 Carry out batching, put the prepared alloy raw material into the furnace body of step (1); (3) after the alloy raw material in step (2) in the furnace is energized and melted, add argon gas into the furnace again to make the pressure reach 500Pa , and stabilize the temperature of the melt at 1200°C; (4) pour the melt in step (3) into a pressure casting holding furnace filled with nitrogen for heat preservation, and then pour the melt in the holding furnace into a water-cooled copper mold , before pouring, the mold should be preh...

Embodiment 2

[0024] A hydrogen storage alloy for vehicle-mounted energy storage, characterized in that, in the crystal structure of the finished hydrogen storage alloy, AB 2 Structure and A 5 B 19 The sum of the constituent ratios of the structure is 60%. The preparation steps are as follows: (1) Vacuum the intermediate frequency melting furnace, and when the vacuum degree reaches 0.1~1Pa, argon gas is introduced; (2) press La 0.5 Ce 1.5 Ti 2.1 Mg 3.5 Ni 1.1 co 1.4Carry out batching, put the prepared alloy raw material into the furnace body of step (1); (3) after the alloy raw material in step (2) in the furnace is energized and melted, add argon gas into the furnace again to make the pressure reach 600Pa , and stabilize the temperature of the melt at 1300°C; (4) pour the melt in step (3) into a pressure casting holding furnace filled with nitrogen for heat preservation, and then pour the melt in the holding furnace into a water-cooled copper mold , before pouring, the casting mold ...

Embodiment 3

[0026] A hydrogen storage alloy for vehicle-mounted energy storage, characterized in that, in the crystal structure of the finished hydrogen storage alloy, AB 2 Structure and A 5 B 19 The sum of the constituent ratios of the structure is 45%. The preparation steps are as follows: (1) Vacuumize the intermediate frequency melting furnace, and when the vacuum reaches 0.1~1Pa, argon gas is introduced; (2) press La 0.2 Ce 0.2 Ti 0.5 Mg 2.7 Ni 2 co 2.2 Carry out batching, put the prepared alloy raw material into the furnace body of step (1); (3) after the alloy raw material in step (2) in the furnace is energized and melted, add argon gas into the furnace again to make the pressure reach 500Pa , and stabilize the temperature of the melt at 1350°C; (4) pour the melt in step (3) into a pressure casting holding furnace filled with nitrogen for heat preservation, and then pour the melt in the holding furnace into a water-cooled copper mold , before pouring, the casting mold shoul...

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Abstract

The invention discloses a hydrogen storage alloy for vehicle-mounted energy storage. The crystal structure of the alloy is changed through component adjustment and a heat treatment process for the hydrogen storage alloy; the obtained finished product has the characteristic that the sum of the composition proportions of an AB2 structure and an A5B19 structure is more than 40%; and an AB2-type hydrogen storage alloy and an A5B19-type hydrogen storage alloy have the characteristics of being high in discharge capacity, long in cycle life, easy to activate, and the like, so that the finished hydrogen storage alloy product disclosed by the invention has higher discharge capacity and hydrogen storage amount than a product in the prior art, and moreover, the hydrogen absorption / desorption capacity retention ratio and the residual magnetization performance are also excellent.

Description

technical field [0001] This patent relates to the field of alloy materials, specifically, to a hydrogen storage alloy for vehicle-mounted energy storage. Background technique [0002] At present, the Chinese auto market is undergoing a transformation from traditional power vehicles to new energy vehicles. The mainstream new energy vehicle technology is based on electric vehicle technology, which can be divided into hybrid vehicles, pure electric vehicles and fuel cell vehicles. Among them, the hybrid electric vehicle is optimized and reformed on the basis of the traditional internal combustion locomotive, and the internal combustion engine technology and the electric motor technology are organically combined to make the vehicle meet people's requirements for fuel consumption and the environment. Hybrid vehicles rely heavily on advanced internal combustion engine technology. Pure electric vehicles get rid of the dependence on the advanced technology of traditional power pla...

Claims

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Application Information

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IPC IPC(8): C22C30/00C22C1/02C22F1/00
CPCC22C1/02C22C30/00C22F1/002
Inventor 王增琪
Owner 浙江蓝能氢能科技股份有限公司
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