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Method for preparing hydrogen by electrocatalysis of sodium borohydride solution

A sodium borohydride and electrocatalysis technology, applied in the field of hydrogen production, can solve the problems of reduced reliability and complex system, and achieve the effects of improved controllability, high purity and energy saving

Inactive Publication Date: 2013-06-26
浙江高成绿能科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the device requires a low-power hydraulic pump, and the system is relatively complicated, which reduces reliability

Method used

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  • Method for preparing hydrogen by electrocatalysis of sodium borohydride solution
  • Method for preparing hydrogen by electrocatalysis of sodium borohydride solution
  • Method for preparing hydrogen by electrocatalysis of sodium borohydride solution

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Experimental program
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Effect test

Embodiment 1

[0053] Such as figure 2 As shown, the electrolytic cell uses a 20cm 2 The 40-mesh nickel mesh is used as the cathode and anode electrode materials, and the cathode and anode are separated by porous insulating materials. DC voltage is used for electrocatalysis, and the sodium borohydride solution is catalyzed and decomposed on the surface of the electrode to generate hydrogen.

[0054]

Embodiment 2

[0056] Such as image 3 As shown, the electrolytic cell uses a 40cm 2 The 40-mesh nickel mesh is used as the cathode and anode electrode materials. The cathode and anode are separated by porous insulating materials. The distance between the cathode and the anode is 1mm. The sodium borohydride aqueous solution with a mass concentration of 15% is passed into the electrolytic cell, and a DC voltage is applied for electrocatalysis. , the sodium borohydride solution is catalyzed and decomposed on the surface of the electrode to generate hydrogen.

[0057]

Embodiment 3

[0059] Such as Figure 4 As shown, the electrolytic cell uses a 40cm 2 The 80-mesh nickel mesh is used as the cathode and anode electrode materials. The cathode and anode are separated by porous insulating materials. The distance between the cathode and the anode is 1mm. The sodium borohydride aqueous solution with a mass concentration of 15% is passed into the electrolytic cell, and a DC voltage is applied for electrocatalysis. , the sodium borohydride solution is catalyzed and decomposed on the surface of the electrode to generate hydrogen.

[0060]

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Abstract

The invention relates to a method for preparing hydrogen, and in particular relates to a method for preparing hydrogen by the electrocatalysis of a sodium borohydride solution. The method comprises the following steps: leading the sodium borohydride solution with the mass concentration of 0.1% to 35% into an electrolytic tank with a cathode electrode and an anode electrode; performing the electrocatalysis by applying a direct current voltage; and then performing a catalytic decomposition on the sodium borohydride solution on the surfaces of the electrodes, thereby generating the hydrogen. By utilizing the sodium borohydride solution and the direct current voltage, the transferring of electric charges on the interfaces of the electrodes and electrolytes is accelerated, so that the catalytic activity of electrode materials is improved; and by utilizing the electrocatalysis of the electrodes, the decomposition reaction of the sodium borohydride solution is promoted, so that the hydrogen is prepared in the electrocatalysis manner. The electric energy required by the electrocatalysis is far less than that required by the water decomposition, so that the electric energy is saved. Compared with the method for preparing the hydrogen by the catalytic decomposition of the sodium borohydride by directly utilizing commonly-used catalysts such as acid materials or metal catalysts, in the method provided by the invention, the starting and the ending of hydrogen generation as well as the hydrogen generation yield can be regulated through the current and the voltage between the electrodes, so that the controllability is improved greatly. In addition, the method provided by the invention is safe, environment-friendly and free of oxygen generation.

Description

technical field [0001] The invention relates to a method for producing hydrogen, in particular to a method for producing hydrogen from an electrocatalyzed sodium borohydride solution. Background technique [0002] Hydrogen is widely used in industry. As an energy carrier, it has many advantages such as high calorific value and no pollution after conversion by fuel cells. It is an ideal energy source in the future. However, for fuel cell users, the acquisition and storage of hydrogen is currently facing many difficulties, which limits the popularization and application of fuel cells. Due to the low density of gaseous hydrogen, it needs to be stored under high pressure to achieve a suitable energy density, while liquid hydrogen cannot be stored for a long time due to the problem of volatilization. In addition, the mass and volume of the hydrogen storage device are large, which is not suitable for use as a small fuel cell with less hydrogen consumption. [0003] In order to s...

Claims

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Application Information

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IPC IPC(8): C01B3/04
CPCY02E60/36
Inventor 侯向理栾金龙蒋利娟姚宇希
Owner 浙江高成绿能科技有限公司
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