Process for preparing boron hydride by electrolytic method

A borohydride, electrolysis technology, applied in the electrolysis process, electrolysis components, etc., to achieve the effect of increasing the electrode surface area, improving the electrochemical reaction rate, and increasing the current density

A borohydride, electrolysis technology, applied in the electrolysis process, electrolysis components, etc., to achieve the effect of increasing the electrode surface area, improving the electrochemical reaction rate, and increasing the current density

CN1396307AInactive Publication Date: 2003-02-12TAIYUAN UNIV OF TECH
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] Choose titanium-based manganese dioxide as the anode, nickel as the cathode, 2.0mol.l -1 NaOH and 2.0mol.l -1 The metaborate is the cathodic solution, 2.0mol.l -1 h 2 SO 4 It is the anode solution, the temperature is 40°C, and the current density is 80mA / cm 2 , electrolysis for 2 hours, the current efficiency was 32%.

Embodiment 2

[0012] Choose titanium-based manganese dioxide as the anode, iron as the cathode, 2.0mol.l -1 NaOH and 2.0mol.l -1 The metaborate is the cathodic solution, 2.0mol.l -1 HCL is the anode solution, the temperature is 48°C, and the current density is 100mA / cm 2 , electrolysis for 2 hours, the current efficiency is 30%.

Embodiment 3

[0014] Choose lead dioxide as the anode, graphite as the cathode, 2.0mol.l -1 NaOH and 2.0mol.l -1 The metaborate is the cathodic solution, 2.0mol.l -1 HCl is the anode solution, the temperature is 45°C, and the current density is 100mA / cm 2 , electrolysis for 2 hours, the current efficiency is 30%.

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Abstract

A process for preparing boron hydride from the metaborate by electrolytic method features that catalytically hdyrolzying alkali-metal boron hydride to generate hydrogen and metaborate as by-product, and electrolyzing the metaborate to generate boron hydride again, forming a cycle. The boron hydride used as hydrogen source of fuel battery features high electrochemical speed, long charge-discharge life, and low cost.

Description

technical field [0001] The process for preparing borohydride by electrolysis of the present invention belongs to the field of hydrogen raw material preparation in fuel cells, specifically, it is a method for preparing borohydride from metaborate by electrolysis, that is, alkali metal borohydride is catalyzed and hydrolyzed to generate hydrogen, and The by-product metaborate is re-electrolyzed to generate borohydride, realizing the recycling process of metaborate. Background technique [0002] Today, fuel cells are highly valued by various countries, and are considered to be the preferred clean and efficient power generation technology in the 21st century. Fuel electric vehicles have become a hot spot in the development and competition of major automobile companies in the world. [0003] The best fuel for fuel cells is hydrogen. Recently, the chryler group in the United States and H-Gene Tech.Alliance in Japan are developing new fuel cells that use alkali metal borohydride a...

Claims

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Application Information

Patent Timeline
12 Feb 2003
Publication
CN1396307A
IPC
C25B1/00
Inventors
孙彦平; 梁镇海