Optical anode used for hydrogen production by photoelectrochemistry decomposition water and preparation method thereof

A photoelectrochemical and water splitting technology, applied in the direction of electrodes, electrolytic processes, electrolytic components, etc., can solve the problems of low electrocatalytic activity and narrow bandwidth, and achieve the effects of high electrocatalytic activity, energy saving, and high photocatalytic activity

Active Publication Date: 2009-11-11
ENN SCI & TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, in the photoelectrochemical water splitting hydrogen production system, in the research of photoanode materials, the research focus is generally on semiconductor materials with narrow bandwidth and high photocatalytic activity, but semiconductor materials with high photocatalytic activity generally have Disadvantages of low electrocatalytic activity

Method used

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  • Optical anode used for hydrogen production by photoelectrochemistry decomposition water and preparation method thereof
  • Optical anode used for hydrogen production by photoelectrochemistry decomposition water and preparation method thereof
  • Optical anode used for hydrogen production by photoelectrochemistry decomposition water and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] Put the ITO with a side length of 2 cm in the container, wash it with detergent powder in turn, wash it with acetone, ethanol, and deionized water by ultrasonic vibration, and then put it in a drying oven (Tianjin Test, 101-1AB) at 60 ° C dried to obtain figure 1 The conductive glass shown in 1. Then, place the conductive glass in the chamber of a sputtering coating instrument (MSP-300, Genesis Wiener), install the W target on the radio frequency back target, and simultaneously feed the mixed gas of oxygen and argon into the chamber (Oxygen accounts for 40% by volume), then turn on the power supply and start coating, and turn off the power supply after 2 hours to stop coating, and obtain such as figure 2 Conductive glass with sputtered layer 2 after sputtering shown in . Afterwards, a screen mesh with a square mesh and a side length of 4 microns was pasted on the film, and the power was turned on to continue coating. After 2 hours, turn off the power, stop the coati...

Embodiment 2

[0057] Put FTO with a side length of 2 cm in a container, wash it with detergent powder, acetone, ethanol, and deionized water with ultrasonic vibration, and then dry it in a drying oven (Tianjin Test, 101-1AB) at 60 ° C. dried to obtain figure 1 The conductive glass shown in 1. Then, the conductive glass was placed in the cavity of a sputtering coating instrument (MSP-300, Genesis Weina), the Ti target was installed on the radio frequency back target, and a mixed gas of oxygen and argon was introduced into the cavity at the same time (Oxygen accounts for 30 volume %), then turn on the power supply and start coating, turn off the power supply after 1.5 hours and stop coating, obtain such as figure 2 Conductive glass with sputtered layer 2 after sputtering shown in . Afterwards, a screen mesh with a square mesh and a side length of 3 microns was pasted on the film, and the power was turned on to continue coating. After 1.5 hours, turn off the power, stop the coating, and ge...

Embodiment 3

[0060] Except Ni(NO in the ethanol solution in embodiment 1 3 ) 3 ·6H 2 O (Tianjin Huadong Reagent Factory) and Fe (NO 3 ) 3 9H 2 Except that the quality of O (Tianjin Huadong Reagent Factory) was changed to 4.66 grams and 6.46 grams respectively, the photoanode for splitting water to produce hydrogen was prepared according to the conditions described in Example 1.

[0061] According to the above measurement method, in the prepared photoanode for splitting water to produce hydrogen, the thickness of the sputtered layer is 1.5 microns; the height of the protrusions is 1.5 microns, the diameter is 4 microns, and the density is 6.3×10 6 piece / cm 2 ; and the Ni-Fe oxide film thickness is 110 nanometers.

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Abstract

The invention provides an optical anode used for hydrogen production by photoelectrochemistry decomposition water and a preparation method thereof. The optical anode comprises: conductive glass (1); a sputtering layer (2) which is arranged on the conductive glass (1) and has bulges (3); and a Ni-Fe oxide film (4) arranged on the sputtering layer (2). The preparation method comprises the following steps: (a) sputtering coating the conductive glass (1), then sticking the silk screen onto the sputtering layer (2) and continuing for sputtering coating; and (b) immersing the conductive glass processed in step (a) into a dipping solution which contains nickel salt and iron salt for dip coating, then drying and heat processing the conductive glass. The optical anode prepared in the invention has higher photocatalytic activity and electrocatalytic activity, can save energy and improve the opto-electrical transformation efficiency of hydrogen production by photoelectrochemistry decomposition water.

Description

technical field [0001] The invention relates to a photoanode for photoelectrochemically decomposing water to produce hydrogen and a preparation method thereof. Specifically, the present invention relates to a photoelectric double-response photoanode for photoelectrochemical water splitting to produce hydrogen with high photocatalytic activity and high electrocatalytic activity and a preparation method thereof. Background technique [0002] As a pollution-free and ecologically clean energy, hydrogen energy has always attracted the attention of scientific and technological workers from all over the world. Hydrogen production by photolysis of water using solar energy is one of the current research hotspots, which includes two main research directions: photocatalytic hydrogen production and photoelectrochemical water splitting for hydrogen production. Photoelectrochemical water splitting for hydrogen production is currently recognized as a promising hydrogen production method, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25B11/00C25B1/04C25B9/04H01L31/00
CPCY02E60/366Y02E60/36
Inventor 甘中学赵伟郑善亮
Owner ENN SCI & TECH DEV
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