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A kind of preparation 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., and achieve simple process, convenient operation, The effect of low material requirements

Inactive Publication Date: 2019-03-08
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 kind of preparation method of 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 blocks, the pressure range is 10 tons;

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

[0028] Weigh 0.3g 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 kind of preparation method of 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 blocks, the pressure range is 10 tons;

[0038] 3) Put the product of step 2) into an airtight container and let it stand in an argon atmosphere at 300° C. for 10 h; then cool with ice water for 5 h to obtain a silicon / alkali metal hydrogen production material.

[0039] Weigh 0.3g sample and put it into hot water at 50°C, the hydrog...

Embodiment 3

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

[0042] 9) Lithium-silicon alloy (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 kind of preparation method of 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 blocks, the pressure range is 10 tons;

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

[0049] Weigh 0.3g sample and put it...

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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 worsening 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 apply hydrogen energy is fuel cells. Fuel cells have the advantages of high power generation efficiency, clean and pollution-free, and high power density, and have made great progress in the past 30 years. Proton exchange membrane fuel cells that use hydrogen as fuel have mild operating conditions and are widely used in the fields of automobiles and electronic products. However, proton exchange membrane fuel cells still face problems such as hydrogen storage safety, leakage and low storage density. Portable hydrogen sources based on on-site hydrogen production are an effect...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B3/06C01B3/08
CPCY02E60/36
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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