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Preparation method for hydrogen storage alloy material

A technology for hydrogen storage alloys and raw materials, applied in hydrogen separation, using solid contact hydrogen separation, etc., can solve the problems of volatilization, difficult to avoid Mg, unable to meet battery performance requirements, etc., to reduce the number of cycles, reduce the pressure of hydrogen absorption and release, The effect of improving corrosion resistance and easy activation

Active Publication Date: 2019-08-23
YIBIN TIANYUAN GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The application found in the research that the currently prepared binary or multi-component magnesium-based alloys with hydrogen storage properties all have Mg 2 Ni hexagonal structure, which restricts the hydrogen absorption and desorption kinetics and oxidation resistance of the alloy, and it is difficult to avoid the volatilization of Mg during the alloy smelting process in the alloy preparation
The rise of hybrid vehicles in recent years has put forward higher requirements on the performance of batteries. The hydrogen storage alloy materials prepared according to the current method can no longer meet the performance requirements of hybrid vehicles for batteries.

Method used

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  • Preparation method for hydrogen storage alloy material
  • Preparation method for hydrogen storage alloy material
  • Preparation method for hydrogen storage alloy material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] (1) Get the raw materials according to the following mass fractions: lanthanum (purity 99.8%) 17.44% (calculation, the same below), yttrium (purity 99.9%) 5.90%, samarium (purity 99.9%) 9.41%, nickel (purity 99.0%) %) 62.99%, manganese (purity 99.9%) 3.51%, cerium (purity 99.6%) 0.75%;

[0032] (2) Put the measured raw materials into the high-frequency melting furnace with argon protection in sequence according to the feeding order of yttrium, lanthanum, cerium, manganese, samarium and nickel (argon purity ≥ 99.999%);

[0033] (3) Heat up to 120°C and keep the temperature constant for 10 minutes to remove the moisture in the material;

[0034] (4) Continue to heat up to 800°C and keep the temperature constant for 5 minutes to remove low-boiling volatiles;

[0035] (5) Continue to heat up to 1650°C and keep the temperature constant for 10 minutes to fully melt the raw materials to obtain a melt;

[0036] (6) After the melt is cooled to room temperature, it is quickly t...

Embodiment 2

[0040] (1) The raw materials are taken according to the following mass fractions: lanthanum (purity 99.8%) 16.78% (calculation, the same below), yttrium (purity 99.9%) 6.24%, samarium (purity 99.9%) 10.19%, nickel (purity 99.0%) %) 61.15%, manganese (purity 99.9%) 3.84%, cerium (purity 99.6%) 1.80%;

[0041] (2) Put the measured raw materials into the high-frequency melting furnace with argon protection in sequence according to the feeding order of yttrium, lanthanum, cerium, manganese, samarium and nickel (argon purity ≥ 99.999%);

[0042] (3) be heated up to 130 ℃, constant temperature 12min, to remove the moisture in the material;

[0043] (4) Continue to heat up to 820°C and keep the temperature constant for 7 minutes to remove low-boiling volatiles;

[0044] (5) Continue to heat up to 1680°C and keep the temperature constant for 12 minutes to fully melt the raw materials to obtain a melt;

[0045] (6) After the melt is cooled to room temperature, it is quickly transferr...

Embodiment 3

[0049] (1) Get raw materials according to the following mass fractions: lanthanum (purity 99.8%) 15.31% (calculated in hundreds, the same below), yttrium (purity 99.9%) 7.60%, samarium (purity 99.9%) 11.40%, nickel (purity 99.0%) %) 57.55%, manganese (purity 99.9%) 4.34%, cerium (purity 99.6%) 3.80%;

[0050] (2) Put the measured raw materials into the high-frequency melting furnace with argon protection in sequence according to the feeding order of yttrium, lanthanum, cerium, manganese, samarium and nickel (argon purity ≥ 99.999%);

[0051] (3) Heat up to 120°C and keep the temperature constant for 10 minutes to remove the moisture in the material;

[0052] (4) Continue to heat up to 800°C and keep the temperature constant for 5 minutes to remove low-boiling volatiles;

[0053] (5) Continue to heat up to 1650°C and keep the temperature constant for 10 minutes to fully melt the raw materials to obtain a melt;

[0054] (6) After the melt is cooled to room temperature, it is q...

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Abstract

The invention relates to a production technology for a nickel-hydrogen battery electrode material, and particularly discloses a preparation method for a hydrogen storage alloy material; the preparation method comprises the following steps of: a, measuring raw materials according to a proportion; b, sequentially inputting the raw materials into a smelting furnace with argon gas protection accordingto the feeding order of yttrium, lnthanum, cerium, manganese, samarium and nickel; c. removing moisture in the materials; d, removing low boiling point volatiles; e. fully melting the raw materials;f, repeatedly crushing and melting; g, inputting a product into the smelting furnace, wherein the temperature is raised to 850-920 DEG C, the temperature is kept for 5-10min, and then the temperatureis cooled to the normal temperature at a rate of 20-50 DEG C / min. The advantages are as follows: 1) solving the problem of Mg volatilization during alloy smelting; 2) greatly reducing the effect ofimpurities on the alloy; 3) making the internal crystal phase of the alloy more stable and increasing the number of cycles of the alloy; 4) improving the capacity of the alloy hydrogen storage material; expanding the applicable temperature of the alloy hydrogen storage material; reducing the hydrogen absorption and desorption pressure, and 5) making the alloy crystal phase more uniform.

Description

technical field [0001] The invention relates to the fields of inorganic materials and new energy sources, in particular to the production technology of nickel-hydrogen battery electrode materials. Background technique [0002] The energy crisis and environmental problems caused by the excessive consumption of traditional fossil fuels force us to urgently develop clean and renewable energy. Hydrogen energy has attracted widespread attention due to its many advantages such as clean and efficient, high energy density and wide range of sources. In all aspects of hydrogen production, storage, transportation, and application, hydrogen storage is the bottleneck that restricts the entire recycling of hydrogen energy. It is imperative to find economical, safe and efficient means of hydrogen storage. At present, hydrogen, as an ideal clean energy, has become a research and development hotspot all over the world, and has received widespread attention from all countries. Research on ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C19/03C22C1/02C01B3/56
CPCC01B3/56C22C1/023C22C19/03
Inventor 侯天武孙永贵杨连智
Owner YIBIN TIANYUAN GRP CO LTD
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