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Preparing method of silicon/alkali metal hydrogen production material

An alkali metal and metal technology, applied in the field of silicon/alkali metal hydrogen production materials, can solve the problems of user hazards, strong alkali corrosion, high material requirements for hydrogen generators, etc., to achieve simple process, convenient operation, The effect of low material requirements

Inactive Publication Date: 2017-09-22
CHINA JILIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, strong alkali is highly corrosive and requires high material requirements for hydrogen generators, which may also cause potential harm to users, which greatly limits the development and utilization of silicon hydrogen production materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Composition design of a silicon / alkali metal hydrogen production material:

[0020] 1) Silicon, 3g; Lithium, 0.2g; Aluminum chloride, 0.05g;

[0021] 2) Silicon, 3g; Lithium, 0.1g; Aluminum chloride, 0.1g;

[0022] 3) Silicon, 3g; Lithium, 0.3g; Aluminum chloride, 0.02g;

[0023] 4) Silicon, 3g; Lithium, 0.05g; Aluminum chloride, 0.2g;

[0024] A preparation method of a silicon / alkali metal hydrogen production material comprises:

[0025] 1) Weigh a certain mass of silicon, lithium metal and aluminum chloride, and perform mechanical ball milling in an argon atmosphere for 10 hours;

[0026] 2) pressing the product of step 1) into a block, and the pressure range is 10 tons;

[0027] 3) Put the product of step 2) into a closed container, and set aside in an argon atmosphere at 400° C. for 5 hours; then cool with ice water for 2 hours to obtain a silicon / alkali metal hydrogen production material.

[0028] Weigh 0.3g of the sample and put it into hot water at 50°C, the...

Embodiment 2

[0030] Composition design of a silicon / alkali metal hydrogen production material:

[0031] 5) silicon, 3g; sodium, 0.2g; aluminum chloride, 0.05g;

[0032] 6) Silicon, 3g; Potassium, 0.2g; Aluminum chloride, 0.05g;

[0033] 7) Silicon, 3g; Sodium, 0.1g; Aluminum chloride, 0.1g;

[0034] 8) Silicon, 3g; Potassium, 0.1g; Aluminum chloride, 0.1g;

[0035] A preparation method of a silicon / alkali metal hydrogen production material comprises:

[0036] 1) Weigh a certain mass of silicon, lithium metal and aluminum chloride, and perform mechanical ball milling in an argon atmosphere for 20 hours;

[0037] 2) pressing the product of step 1) into a block, and the pressure range is 10 tons;

[0038] 3) The product of step 2) is put into a closed container, and the argon atmosphere is set aside at 300° C. for 10 hours; then, it is cooled with ice water for 5 hours to obtain a silicon / alkali metal hydrogen production material.

[0039] Weigh 0.3g of the sample and put it into hot wat...

Embodiment 3

[0041] Composition design of a silicon / alkali metal hydrogen production material:

[0042] 9) Lithium-silicon alloy (the mass ratio of lithium-silicon is 1:4), 3g; aluminum bromide, 0.1g;

[0043] 10) sodium-silicon alloy (sodium-silicon mass ratio is 1:4), 3g; aluminum bromide, 0.1g;

[0044] 11) Potassium-silicon alloy (sodium-silicon mass ratio is 1:4), 3g; aluminum bromide, 0.1g;

[0045] A preparation method of a silicon / alkali metal hydrogen production material comprises:

[0046] 1) Weigh a certain mass of silicon, lithium metal and aluminum chloride, and perform mechanical ball milling in an argon atmosphere for 5 hours;

[0047] 2) pressing the product of step 1) into a block, and the pressure range is 10 tons;

[0048] 3) Put the product of step 2) into a closed container, and set aside in an argon atmosphere at 500° C. for 10 hours; then cool with ice water for 2 hours to obtain a silicon / alkali metal hydrogen production material.

[0049] Weigh 0.3g of the samp...

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Abstract

The invention relates to a preparing method of a silicon / alkali metal hydrogen production material. In a silicon hydrogen production material, silicon and alkali metal or silicon / alkali metal alloy are adopted as a precursor, the precursor and metal haloid salt are mechanically mixed, briquetting and hot treatment are conducted, and then rapid cooling is conducted to obtain the silicon / alkali metal hydrogen production material. The mass of alkali metal is 0-30 wt% that of silicon, and the mass of haloid salt is 0.01-20 wt% that of silicon; alkali metal is one or two of lithium, sodium, and potassium, silicon / alkali metal alloy is one of lithium silicon alloy, sodium silicon alloy and potassium silicon alloy, the metal haloid salt anion is one of chlorine, bromine and iodised salt, and the metal haloid salt cation is one of aluminum, zinc, bismuth, stannum, copper and plumbum. The silicon / alkali metal hydrogen production material has great hydrolysis performance, and has a great application prospect in the field of portable hydrogen production.

Description

technical field [0001] The invention belongs to the field of hydrogen production, and in particular relates to a preparation method of a silicon / alkali metal hydrogen production material. Background technique [0002] With the deterioration of environmental pollution and the improvement of people's awareness of environmental protection, hydrogen energy has attracted more and more attention. The best way to use hydrogen energy is with fuel cells. Fuel cells have the advantages of high power generation efficiency, cleanliness and pollution-free, and high power density, and have developed rapidly in the past 30 years. Proton exchange membrane fuel cells using hydrogen as fuel have mild operating conditions and are widely used in automobiles, electronic products and other fields. However, proton exchange membrane fuel cells still face the problems of storage safety, leakage and low storage density of hydrogen. The portable hydrogen source based on on-site hydrogen production ...

Claims

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Application Information

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IPC IPC(8): C01B3/06C01B3/08
CPCY02E60/36C01B3/06C01B3/08
Inventor 陈鑫范美强申屠宏伟奚诚巧邹文珍尹天楚
Owner CHINA JILIANG UNIV
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