Preparation method of photo anode material of battery prepared through photocatalytic decomposition of water into hydrogen

A technology of photolysis of water to produce hydrogen and photoanode, applied in the direction of electrodes, nanotechnology for materials and surface science, electrode shape/type, etc., can solve the problems of limited photoelectric conversion efficiency, limited surface area, low photocatalytic activity, etc. , to achieve the effects of good diffusion, good size uniformity and large specific surface area

Active Publication Date: 2018-08-03
HUAIBEI NORMAL UNIVERSITY
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Problems solved by technology

[0004] In recent years, people have used narrow-bandgap InP as the photoelectrode material for photoelectric water splitting to produce hydrogen, because its direct bandgap of 1.35 eV matches the solar spec

Method used

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  • Preparation method of photo anode material of battery prepared through photocatalytic decomposition of water into hydrogen
  • Preparation method of photo anode material of battery prepared through photocatalytic decomposition of water into hydrogen
  • Preparation method of photo anode material of battery prepared through photocatalytic decomposition of water into hydrogen

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Example Embodiment

[0035] Example 1

[0036] A preparation method of photoanode material for photohydrogen production battery. Firstly, InP wafer is used as the substrate, and the copper source and carboxylic acid are Cu 2 The precursor of O is prepared by electrochemical anodic etching and wet etching to prepare a one-dimensional InP nanopore array, and then using the one-dimensional InP nanopore array as a template, the Cu is deposited by electrochemical deposition. 2 O nanoparticles are loaded in the InP nanopore array to construct InP / Cu 2 O nanoheterojunction array composite structure.

[0037] Such as figure 1 As shown, InP / Cu 2 The preparation of O nano-heterojunction arrays can be divided into two steps. First, the two-step etching method is used to prepare the ordered InP nanohole array, and then the InP / Cu is constructed by electrochemical deposition technology. 2 O nano heterojunction array.

Example Embodiment

[0038] Example 2

[0039] A preparation method of photoanode material for photodegradation of water for hydrogen production, the steps are as follows:

[0040] (1) Cut the n-InP wafer into samples of the same size, and then put the cut InP samples in acetone and absolute ethanol for ultrasonic cleaning for more than 5 minutes to remove the oil on the surface of the InP samples, and then use deionized water Rinse the InP sample three times, then dry it for later use;

[0041] (2) Use the DC magnetron sputtering method to sputter the indium film on the back of the InP sample in step 1, and then put the InP sample in a completely dried quartz boat, and place it in a chemical vapor deposition furnace with a controlled heating rate. N 2 In an atmosphere, the temperature is increased at a rate of 2 to 5°C / minute and maintained at 350°C for 1 minute to form a good ohmic contact between the InP and the indium film, and then the InP sample is placed on the back side with a high-purity conduc...

Example Embodiment

[0052] Example 3

[0053] A preparation method of photoanode material for photodegradation of water for hydrogen production, the steps are as follows:

[0054] (1) Cut the n-InP wafer into samples of the same size, and then put the cut InP samples in acetone and absolute ethanol for ultrasonic cleaning for more than 5 minutes to remove the oil on the surface of the InP samples, and then use deionized water Rinse the InP sample three times, then dry it for later use;

[0055] (2) Use the DC magnetron sputtering method to sputter the indium film on the back of the InP sample in step 1, and then put the InP sample in a completely dried quartz boat, and place it in a chemical vapor deposition furnace with a controlled heating rate. N 2 In the atmosphere, the temperature is increased at a rate of 2-5°C / minute and maintained at 350°C for 1 minute to form a good ohmic contact between the InP and the indium film. Then use high-purity conductive silver paste to connect the back of the InP s...

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Abstract

The invention discloses a preparation method of a photo anode material of a battery prepared through photocatalytic decomposition of water into hydrogen. The preparation method comprises the steps offirstly adopting an InP chip as a substrate, and preparing a one-dimensional well-aligned InP nanopore array through an electrochemical anode etching method and a wet etching method; and then adoptingthe one-dimensional well-aligned InP nanopore array as a template, loading Cu2O nano-particles into the InP nanopore array through an electrochemical deposition method, and building an InP/Cu2O nanometer heterojunction array composite structure. According to the preparation method provided by the invention, the InP/Cu2O nanometer heterojunction array photo anode material is ingeniously built through regulating the conditions such as the time of electrochemical etching of InP, pH of a copper source and a complexing agent, and electrodeposition time, so that the contact area of heterojunctionscan be greatly increased, electrochemical reaction active sites can be greatly increased, and an excellent photon-generated carrier separating capacity is realized; a reaction reagent is convenient, easy to get, green and environmental-friendly; the yield and the purity are high; and the obtained material is large in specific surface area, good in size uniformity, and suitable for large-scale production.

Description

technical field [0001] The invention relates to a preparation method of a battery anode material, in particular to a preparation method of a photoanode material of a photolysis water hydrogen production battery. Background technique [0002] As a clean and renewable new energy, hydrogen energy has high energy density and good production efficiency, making it an ideal carrier for energy storage. Therefore, the development of hydrogen energy has become a research hotspot in various countries in the world. As an energy conversion method that can use solar energy to directly split water into hydrogen and oxygen at room temperature, photolytic water cells are one of the most promising methods for producing hydrogen energy. However, the solar energy conversion efficiency of most electrode materials currently Still low. Therefore, designing and synthesizing new materials is a hot spot in this research field. [0003] Early researchers often focused on wide-bandgap oxide semicond...

Claims

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Application Information

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IPC IPC(8): C23F17/00C25B11/03C25B11/04C25F3/12C25D3/38C25D7/12C23C14/18C23C14/35C23C14/58B82Y30/00
CPCB82Y30/00C23C14/185C23C14/35C23C14/5806C23F17/00C25D3/38C25D7/12C25F3/12C25B11/031C25B11/069C25B11/077
Inventor 李强代凯张金峰李宏张敏朱光平
Owner HUAIBEI NORMAL UNIVERSITY
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