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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 difficult to control the reaction speed, hinder the further reaction of solid hydrides, reduce the hydrogen production rate of solid hydrides, etc.

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

[0029] Hydrogen storage material: 100g of sodium borohydride, 25g of sodium hydroxide, 18g of pullulanase hydrogel.

[0030] Preparation method: Sodium borohydride, sodium hydroxide and 500g of water are prepared into an alkaline sodium borohydride solution, the alkaline sodium borohydride solution is injected into the water-absorbing material pullulanase, and the water-absorbing material absorbs the alkaline sodium borohydride solution to form borohydride Sodium hydride gel solution. After vacuum drying at room temperature, the water content is lower than 1 wt%, and the sodium borohydride hydrogen storage material coated with the water-absorbing material is obtained.

[0031] The method for preparing hydrogen by utilizing the hydrogen storage material: the nickel chloride containing 1g NiCl 2 100 g of the catalyst precursor solution was added to the hydrogen storage material, and the catalyst precursor solution was absorbed by the sodium borohydride hydrogen storage material...

Embodiment 2

[0033] Hydrogen storage material: sodium borohydride 100g, potassium hydroxide 0.01g, cellulose xanthate superabsorbent material 25g;

[0034] Preparation method: Sodium borohydride, potassium hydroxide and 1000g of water are prepared into alkaline sodium borohydride solution, the alkaline sodium borohydride solution is injected into cellulose xanthate superabsorbent material, and the water-absorbent material absorbs alkaline sodium borohydride solution to form a sodium borohydride gel solution. After vacuum drying at room temperature, the water content is lower than 1 wt%, and the sodium borohydride hydrogen storage material coated with the water-absorbing material is obtained.

[0035] The method for preparing hydrogen by utilizing the hydrogen storage material: the hydrogen containing 3g cobalt chloride CoCl 2 100 g of the catalyst precursor solution was added to the hydrogen storage material, and the catalyst precursor solution was absorbed by the sodium borohydride hydro...

Embodiment 3

[0037] Hydrogen storage material: Potassium borohydride 100g, sodium hydroxide 20g, cellulose grafted acrylamide super absorbent material 0.1g.

[0038] Preparation method: Potassium borohydride, sodium hydroxide and 600g of water are prepared into an alkaline potassium borohydride solution, the alkaline potassium borohydride solution is injected into the cellulose grafted acrylamide superabsorbent material, and the water-absorbent material absorbs the alkaline potassium borohydride solution to form a potassium borohydride gel solution. After vacuum drying at room temperature, the water content is lower than 1 wt%, and the potassium borohydride hydrogen storage material coated with the water-absorbing material is obtained.

[0039] The method for preparing hydrogen by utilizing the hydrogen storage material: the hydrogen containing 4.5g nickel sulfate NiSO 4 100 g of the catalyst precursor solution is added to the hydrogen storage material, and the catalyst precursor solution...

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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 to form borohydride gel solution, namely hydrogen storage materials, adding a catalyst to the hydrogen storage materials, then the borohydride hydrolyzes and hydrogen is produced. 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 hydrogen used in fuel cells, in particular to a method for preparing hydrogen used in fuel cells with a controllable release rate. 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 catalyzing the hydrolysis of sodium borohydride using nickel, cobalt or hydrogen storage alloy powder. 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 ...

Claims

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Application Information

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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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