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Method for producing hydrogen by water electrolysis assisted with photocatalysis

A technology of electrolysis of water and photocatalysis, applied in the direction of electrolysis process, electrolysis components, electrodes, etc., can solve the problem of high power consumption, achieve the effect of reducing power consumption, improving efficiency and improving activity

Inactive Publication Date: 2012-07-04
EAST CHINA UNIV OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Hydrogen production by electrolysis of water is a mature technology that has been applied in industry for more than 80 years. There are more than 300 hydrogen production plants by electrolysis of water in production and operation around the world, and the hydrogen produced accounts for about 5% of the total hydrogen production. Water electrolysis technology The fundamental problem is the high power consumption

Method used

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Embodiment 1

[0022] with RuO 2 As the anode, Pt as the cathode, Nifon proton exchange membrane, pure water and isopropanol as the electrolyte to construct a homopolymer electrolyzer (SPE), and based on this homopolymer electrolyzer, use plasma sputtering technology in RuO 2 A layer of metal Ti was sputtered on the surface of the anode, and a layer of TiO was obtained on the surface of the sputtered anode by anodic oxidation. 2 nanotube array films, by impregnating H 2 PtCl 6 and hydrazine hydrate reduction method on TiO 2 The noble metal Pt is deposited on the surface of the nanotube array, and the RuO 2 Modification of the anode, and use it as an anode for hydrogen production by photocatalytic assisted electrolysis of water, and irradiate the anode with ultraviolet light to construct a test device for hydrogen production by photocatalytic assisted electrolysis of water of the present invention. A 1.6v DC voltage is applied, and an ultraviolet light source is used to irradiate the anod...

Embodiment 2

[0024] Ni-YSZ porous cermet material is used as cathode, LSM is used as anode, ZrO is used as solid oxide electrolyte, pure water and triethanolamine are used as electrolyte, LaCrO 3 The material is a connector to construct a homogeneous oxide electrolyzer, and based on this solid oxide electrolyzer, a photocatalytic assisted electrolysis of water hydrogen production test device is constructed by irradiating the anode with sunlight. CdS-TiO 2 Composite semiconductor photocatalyst coated on LSM anode and sensitized CdS-TiO with eosin-Y organic dye 2 Composite semiconductor photocatalyst, CdS-TiO sensitized with organic dyes 2 The LSM modified by the compound semiconductor photocatalyst is used as the anode for the photocatalytic assisted electrolysis of water to produce hydrogen, and a 1.3v DC voltage is applied, and the modified anode is irradiated with sunlight to realize the process of photocatalytic assisted electrolysis of water for hydrogen production. The amount of hyd...

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Abstract

The invention relates to a method for producing hydrogen by water electrolysis assisted with photocatalysis. The method specifically comprises the following steps of: based on an industrialized device for producing the hydrogen by the water electrolysis, modifying an anode of an electrolytic cell through photocatalysis material, and adopting a light source to irradiate the anode; and coupling a photocatalysis process in the process of water electrolysis so as to achieve the purpose of producing the hydrogen by the water electrolysis assisted with the photocatalysis. The method is characterized in that the photocatalysis and the water electrolysis are organically coupled together to generate a synergistic effect; the defects of low efficiency of producing the hydrogen by the water photolysis and high power consumption of producing the hydrogen by the water electrolysis are overcome, the voltage of an electrolytic cell is reduced, and the efficiency of hydrogen producing is increased. The method for producing the hydrogen by the water electrolysis assisted with the photocatalysis provided by the invention has simple process and is easy to realize industrialization.

Description

【Technical field】 [0001] The invention belongs to the fields of energy, automobiles, etc., and specifically relates to a method for preparing hydrogen, in particular, a method for photocatalytically assisted electrolysis of water to produce hydrogen. 【Background technique】 [0002] Energy and the environment are two major challenges facing mankind. Hydrogen energy has the characteristics of high efficiency, cleanliness, easy storage and transportation, and is generally praised as the most appropriate energy carrier. Hydrogen is a secondary energy source. At present, the raw materials for obtaining hydrogen mainly include fossil fuels, biomass and water. Even if hydrogen is produced from fossil energy and biomass energy in an ideal conversion method, ignoring other harmful by-products, only from the stoichiometric analysis, a large amount of greenhouse gas CO will inevitably be produced. 2 , it is estimated that every 1m produced 3 Hydrogen, will produce 0.3-0.4m 3 CO 2 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25B1/04C25B11/06
CPCY02E60/366Y02E60/36
Inventor 常明何洪波董海军曾炽涛陈爱平王毅
Owner EAST CHINA UNIV OF SCI & TECH
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