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A method for preparing hydrogen storage magnesium-nickel alloy nanopowder based on polyol method

A technology of alloy nano and polyol method, applied in the field of materials, can solve the problems of high energy consumption, high cost, temperature rise, etc., and achieve the effect of simple process, low cost and high energy consumption

Active Publication Date: 2021-07-16
上海中海龙高新技术研究院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] 1. The existing technology for preparing nano-magnesium-nickel alloys has high energy consumption and high cost, and is not suitable for mass production;
[0008] 2. The existing technology for preparing nano-magnesium-nickel alloys is inconvenient to adjust the process parameters during the preparation process, and it is difficult to adjust the hydrogen storage performance of the prepared samples by adjusting the process parameters;
[0009] 3. Due to the high temperature generated during the preparation of hydrogen-absorbing materials by mechanical alloying ball milling technology, the high temperature will reduce the activity of the prepared material. Usually, it is necessary to stop for a period of time during the ball milling process to cool down before ball milling. Repeatedly, or by adding C To improve the activity of hydrogen absorbing materials, therefore, the mechanical alloying ball milling technology will cause the problem that the powder is difficult to activate due to the increase of temperature

Method used

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  • A method for preparing hydrogen storage magnesium-nickel alloy nanopowder based on polyol method
  • A method for preparing hydrogen storage magnesium-nickel alloy nanopowder based on polyol method
  • A method for preparing hydrogen storage magnesium-nickel alloy nanopowder based on polyol method

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example 1

[0042] 0.04mol magnesium acetate tetrahydrate (C 4 h 6 o 4 Mg·4H 2 O) and nickel acetate tetrahydrate (C 4 h 6 o 4 Ni·4H 2 O) mixture, dissolved in 500ml ethylene glycol (purity 99%), ethylene glycol acts as a weak reducing agent, wherein the amount of magnesium-nickel precursor is 0.02mol and 0.02mol, that is, Mg:Ni is 1:1. Dissolve 10 grams of polyvinylpyrrolidone (PVP) in another cup of 500ml ethylene glycol (purity 99%), and PVP acts as a protective agent. Finally, the above two cups of 500ml solutions were mixed and then stirred by magnetic force for 30 minutes. Put the mixed solution in an environment of 180°C for reflux, and when the temperature of the solution reaches 180°C, continue to reflux for 10 minutes. Then add containing 0.02mol PdCl 2 500ml of ethylene glycol solution, when the temperature of the solution reaches 180°C again, then continue to reflux for 1 hour to generate magnesium-nickel alloy nanopowder. Then pour the solution into a beaker, cool i...

example 2

[0046] 0.04mol magnesium acetate tetrahydrate (C 4 h 6 o 4 Mg·4H 2 O) and nickel acetate tetrahydrate (C 4 h 6 o 4 Ni·4H 2 O) mixture, dissolved in 500ml ethylene glycol (purity 99%), ethylene glycol acts as a weak reducing agent, wherein the amount of magnesium-nickel precursor is 0.02mol and 0.02mol, that is, Mg:Ni is 1:1. Dissolve 20 grams of polyvinylpyrrolidone (PVP) in another cup of 500 ml of ethylene glycol (purity 99%), and PVP acts as a protective agent. Finally, the above two cups of 500ml solutions were mixed and then stirred by magnetic force for 30 minutes. Put the mixed solution in an environment of 180°C for reflux, and when the temperature of the solution reaches 180°C, continue to reflux for 10 minutes. Then add containing 0.02molPdCl 2 500ml of ethylene glycol solution, when the temperature of the solution reaches 180°C again, then continue to reflux for 1 hour to generate magnesium-nickel alloy nanopowder. Then pour the solution into a beaker, coo...

example 3

[0050] 0.04mol magnesium acetate tetrahydrate (C 4 h 6 o 4 Mg·4H 2 O) and nickel acetate tetrahydrate (C 4 h 6 o 4 Ni·4H 2 O) mixture, dissolved in 500ml ethylene glycol (purity 99%), ethylene glycol acts as a weak reducing agent, wherein the amount of magnesium-nickel precursor is 0.02mol and 0.02mol, that is, Mg:Ni is 1:1. Dissolve 30 grams of polyvinylpyrrolidone (PVP) in another cup of 500 ml of ethylene glycol (purity 99%), and PVP acts as a protective agent. Finally, the above two cups of 500ml solutions were mixed and then stirred by magnetic force for 30 minutes. Put the mixed solution in an environment of 180°C for reflux, and when the temperature of the solution reaches 180°C, continue to reflux for 10 minutes. Then add containing 0.02mol PdCl 2 500ml of ethylene glycol solution, when the temperature of the solution reaches 180°C again, then continue to reflux for 1 hour to generate magnesium-nickel alloy nanopowder. Then pour the solution into a beaker, co...

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Abstract

The present invention provides a method for preparing hydrogen-storing magnesium-nickel alloy nanopowder based on a polyol method and a method thereof, comprising: step 1: dissolving magnesium acetate tetrahydrate and nickel acetate tetrahydrate in ethylene glycol to obtain solution I; step 2: dissolving Dissolve polyvinylpyrrolidone in ethylene glycol to obtain solution II; step 3: mix solution I and solution II and reflux after magnetic stirring; step 4: add 2 ethylene glycol solution, when the temperature of the solution reaches 180°C, it is refluxed, washed, and dried to finally generate magnesium-nickel alloy nanopowder. In this application, the polyol method is used to prepare nano-magnesium-nickel alloy powder, which has less energy consumption, low cost, and is suitable for mass production; the process is relatively simple, and the preparation can be controlled by changing the reaction temperature, reaction time, protective agent dosage and concentration. The particle size of the alloy powder.

Description

technical field [0001] The invention relates to the field of material technology, in particular to a method for preparing hydrogen-storing magnesium-nickel alloy nanopowder based on a polyol method. Background technique [0002] The increase in pollution and energy demand has promoted the development and research of high energy density and clean energy systems. Hydrogen storage energy system could address energy shortages and pollution from traditional fuels [1] , and thus attracts the most attention. However, hydrogen storage is still a big challenge. Many metals have the characteristics of reversible hydrogen absorption and desorption, among which magnesium is the most promising alloy. [2] . Magnesium and its alloys have gradually become the most concerned hydrogen storage alloy materials due to their low density, high hydrogen storage capacity, abundant raw materials, low cost, and low environmental pollution. [0003] In recent years, researchers have improved the hy...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F9/24B82Y40/00B82Y30/00
CPCB22F9/24B82Y30/00B82Y40/00
Inventor 刘守法
Owner 上海中海龙高新技术研究院
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