Preparation of hydrogen-storage material used for fuel cell

A technology of hydrogen storage materials and fuel cells, which is applied in the production of hydrogen, etc., can solve the problems of difficult control of reaction speed, loss of the role of hydrophilic materials in guiding fluid, and reduction of hydrogen production rate of solid hydrides, so as to avoid precipitation and improve conversion rate effect

Inactive Publication Date: 2008-08-27
HANERGY TECH
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  • Description
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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-storage material used for fuel cell
  • Preparation of hydrogen-storage material used for fuel cell

Examples

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Effect test

Embodiment 1

[0028] Hydrogen storage material: sodium borohydride 100g, sodium hydroxide 25g, pullulanase hydrogel 18g, water 1000g;

[0029] Preparation method: mix sodium borohydride, sodium hydroxide and water-absorbing material evenly; inject 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.

[0030] The method for preparing hydrogen by using the hydrogen storage material: inserting a support body made of nickel metal wire with Raney nickel on the surface into the hydrogen storage material, and hydrolyzing sodium borohydride to generate hydrogen. The hydrogen desorption rate can be adjusted by the number of catalyst supports and the insertion depth. When it is necessary to stop the hydrolysi...

Embodiment 2

[0033] Hydrogen storage material: sodium borohydride 50g, potassium borohydride 50g, sodium hydroxide 1g, cellulose xanthate superabsorbent material 2g, water 1000g;

[0034]Preparation method: mix sodium borohydride, potassium borohydride, sodium hydroxide and water-absorbing material evenly; inject water into the above mixture of sodium borohydride, potassium borohydride, sodium hydroxide and water-absorbing material, sodium borohydride, potassium borohydride It is preferentially dissolved in water with sodium hydroxide to form 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.

[0035] The method for preparing hydrogen by utilizing the hydrogen storage material: a support body made of nickel metal wire containing Raney nickel on the surface is inserted into the hydrogen storage material, and sodium borohydride an...

Embodiment 3

[0038] Hydrogen storage material: sodium borohydride 100g, calcium hydroxide 2g, cellulose grafted acrylamide super absorbent material 25g, water 1000g;

[0039] Preparation method: Mix sodium borohydride, calcium hydroxide and water-absorbing material evenly; inject water into the 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.

[0040] The method for preparing hydrogen by using the hydrogen storage material: inserting a support body made of nickel metal sheet with Raney nickel on the surface into the hydrogen storage material, and hydrolyzing sodium borohydride to generate hydrogen. The hydrogen desorption rate can be adjusted by the number of catalyst supports and the insertion depth. When it is ...

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PUM

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Abstract

The invention discloses a method for preparing hydrogen storage materials for fuel cells, which belongs to the field of fuel cells. The method includes uniformly mixing borohydride, hydroxide and water absorption materials, filling water in the mixture of the borohydride, hydroxide and water absorption materials. The borohydride and hydroxide dissolve and form an alkaline solution, the water absorption materials absorbs the alkaline solution to form a gel-like hydrogen storage material. Hydrogen storage materials prepared according to the method provided by the invention have 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 a hydrogen storage material for a fuel cell, in particular to a method for preparing a hydrogen storage material for a fuel cell capable of controlling the release rate of hydrogen. Background technique [0002] Sodium borohydride is a commonly used complex hydride, which 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 industrial production in the European and American markets, but in my country The scope of use is still very small, and there is still room for expansion. [0003] US Patent No. 6 358 488 reports a method for generating hydrogen by using nickel, cobalt or hydrogen storage alloy powder to catalyze the hydrolysis of sodium borohydride. 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 h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B3/06
CPCY02E60/36
Inventor 肖钢侯晓峰刘宾虹李洲鹏
Owner HANERGY TECH
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