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Preparation of hydrogen gas used for fuel cell

A fuel cell and hydrogen technology, applied in the production of hydrogen, etc., can solve the problems of hydrophilic materials losing the role of guiding fluid, difficult to control the reaction speed, and reducing the hydrogen production rate of solid hydrides

Inactive Publication Date: 2008-08-27
HANERGY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

And because it contains a catalyst, it is not easy to control the reaction rate
And during the reaction process, borate is formed to settle at the junction of the hydrophilic material area and the solid hydride area, so that the hydrophilic material loses the role of guiding the fluid, hinders the further reaction of the solid hydride, and reduces the hydrogen production of the solid hydride Rate

Method used

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  • Preparation of hydrogen gas used for fuel cell
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Examples

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Effect test

Embodiment 1

[0032] Hydrogen storage materials: 100g sodium borohydride, 25g sodium hydroxide, 18g pullulanase hydrogel, 1000g water;

[0033] Preparation method: mix sodium borohydride, sodium hydroxide and water absorbing material uniformly; pour water into the above mixture of sodium borohydride, sodium hydroxide and water absorbing material. Sodium borohydride and sodium hydroxide are preferentially dissolved in water to generate alkaline boron Sodium hydride solution, the water-absorbing material absorbs alkaline sodium borohydride solution to form a gel-like hydrogen storage material.

[0034] The method for preparing hydrogen by using the hydrogen storage material: inserting a support made of nickel metal wire and containing Raney nickel on the surface into the hydrogen storage material, and the sodium borohydride is hydrolyzed to generate hydrogen. The hydrogen desorption rate can be adjusted by the number of catalyst supports and the depth of insertion. When it is necessary to stop th...

Embodiment 2

[0037] Hydrogen storage materials: 50g sodium borohydride, 50g potassium borohydride, 1g sodium hydroxide, 2g cellulose xanthate superabsorbent material, 1000g water;

[0038] Preparation method: mix sodium borohydride, potassium borohydride, sodium hydroxide and water absorbing material uniformly; pour water into the mixture of sodium borohydride, potassium borohydride, sodium hydroxide and water absorbing material, sodium borohydride, potassium borohydride And sodium hydroxide are preferentially dissolved in water to generate alkaline sodium borohydride and potassium borohydride solutions, and the water-absorbing material absorbs alkaline sodium borohydride and potassium borohydride solutions to form a gel-like hydrogen storage material.

[0039] The method for preparing hydrogen using the hydrogen storage material: inserting a support made of nickel metal wire and containing Raney nickel on the surface into the hydrogen storage material, sodium borohydride and potassium borohyd...

Embodiment 3

[0042] Hydrogen storage materials: 100g sodium borohydride, 2g calcium hydroxide, 25g cellulose grafted acrylamide super absorbent material, 1000g water;

[0043] Preparation method: Mix sodium borohydride, calcium hydroxide and water-absorbing material uniformly; pour water into the above-mentioned mixture of sodium borohydride, calcium hydroxide and water-absorbing material, sodium borohydride and calcium hydroxide are preferentially dissolved in water to generate alkaline boron Sodium hydride solution, the water-absorbing material absorbs alkaline sodium borohydride solution to form a gel-like hydrogen storage material.

[0044] The method for preparing hydrogen by using the hydrogen storage material: inserting a support made of nickel metal sheet and containing Raney nickel on the surface into the hydrogen storage material, and the sodium borohydride is hydrolyzed to produce hydrogen. The hydrogen desorption rate can be adjusted by the number of catalyst supports and the depth...

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Abstract

The invention discloses a method for preparing fuel cells hydrogen, which belongs to the field of fuel cells. The method includes adding water after uniformly mixing borohydride, hydroxide and water absorption materials, leading water absorption materials to absorb an alkaline borohydride solution to form a gel-like hydrogen storage material, adding a catalyst to the hydrogen storage material, then the borohydride hydrolyzes and hydrogen is produced. The hydrogen storage material provided by the invention has the advantages of stable property, easy storage and portability, which can control hydrogen releasing speed without filtering prepared hydrogen.

Description

Technical field [0001] The invention relates to a method for preparing hydrogen for fuel cells, in particular to a method for preparing hydrogen for fuel cells with a controllable release rate. Background technique [0002] Sodium borohydride is a commonly used complex hydride. It was first synthesized by Schlesinger et al. in 1942. Due to its excellent reducibility and wide range of uses, it has been widely used in European and American markets for industrial production, but in my country The scope of application is still very small, and there is room for expansion. [0003] The US patent US 6358488 reported a method of using nickel, cobalt or hydrogen storage alloy powder to catalyze the hydrolysis of sodium borohydride to generate hydrogen. The reaction equation is as follows: [0004] NaBH 4 +2H 2 O→4H 2 +NaBO 2 [0005] This hydrogen supply method has the following advantages: (1) Sodium borohydride hydrogen storage fuel is an environmentally friendly substance, and the ent...

Claims

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Application Information

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IPC IPC(8): C01B3/06
CPCY02E60/36
Inventor 刘宾虹李洲鹏侯晓峰肖钢
Owner HANERGY TECH
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