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Preparation method of crystal particle electrode with uniform crystal face orientation characteristic

A technology of crystal plane orientation and particle electrodes, which is applied to equipment for manufacturing conductive/semiconductive layers, cable/conductor manufacturing, circuits, etc., can solve the problem of high cost, and achieve simple preparation devices, flexible operation, and scalability strong effect

Active Publication Date: 2021-07-16
SHANGHAI TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These "in-situ" chemical preparation methods usually need to achieve selective exposure of crystal planes on specific conductive substrates, which have certain limitations in the preparation of large-area electrodes, and the cost is high

Method used

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  • Preparation method of crystal particle electrode with uniform crystal face orientation characteristic
  • Preparation method of crystal particle electrode with uniform crystal face orientation characteristic
  • Preparation method of crystal particle electrode with uniform crystal face orientation characteristic

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] (040) Oriented BiVO 4 / glass precursor and electrode preparation method:

[0038] BiVO 4 The powder was prepared according to the modified method in the literature [1] . Usually, 6mmol Bi(NO 3 ) 3 ·5H 2 O and 6 mmol NH 4 VO 3 Dissolve in 20 mL of 2M HNO 3 and 2M NaOH, then mix the two solutions, add 4mL of ethylene glycol and stir for 30min, adjust the pH to 2.0 with ammonia water, continue to stir for 30min, transfer the mixture to a 50mL reactor, and conduct a hydrothermal reaction at 200°C for 24 hours, then cool After filtering and washing several times, BiVO was obtained after drying 4 powder.

[0039] Preparation of (040) Oriented BiVO by Rubbing Method 4 / glass precursor: wash the glass slices, according to 5-20μL / cm 2 A 0.2-2wt% polyethyleneimine (PEI) ethanol solution is added dropwise, and spin-coated at 1000-3000 rpm for 30 seconds to obtain a PEI-modified glass sheet. Use latex gloves to dip BiVO 4The powder is gently rubbed on the glass evenly...

Embodiment 2

[0049] (040) Plane-Oriented BiVO Sheets 4 / glass precursor preparation method:

[0050] Flake BiVO 4 The powder was prepared according to the method in the literature [2] . Usually, 6mmol Bi(NO 3 ) 3 ·5H 2 O and 6 mmol NH 4 VO 3 Dissolve in 20 mL of 2M HNO 3 and 2M NaOH, then mix the two solutions, add 4mL ethylene glycol and 60μL TiCl 3 After the solution was stirred for 30 minutes, the pH was adjusted to 2.0 with ammonia water, and the stirring was continued for 30 minutes, then transferred to a reaction kettle, and subjected to hydrothermal reaction at 200°C for 24 hours, cooled, filtered and washed several times, and dried to obtain flaky BiVO 4 powder.

[0051] Fabrication of (040) Oriented BiVO Sheets by Langmuir-Blodgett Self-Assembly Method 4 / glass precursor: 0.3-0.6g flake BiVO 4 Powder, 50-100mL toluene, 5-15mL oleic acid are mixed and ultrasonicated for several hours, then refluxed in Dean-Stark apparatus for 12 hours, washed with ethanol and dispersed ...

Embodiment 3

[0055] (200) Oriented SrTiO 3 / glass precursor preparation method:

[0056] SrTiO 3 The powder is prepared by the molten salt method, and the molar ratio of SrCO 3 :TiO 2 :Na 2 CO 3 =1:1:2 After the three are ground evenly, they are calcined in a muffle furnace at 1000°C for 3 hours, and then lowered to room temperature at 1°C / min. Cleaned with deionized water, centrifuged and dried to obtain SrTiO 3 powder.

[0057] Preparation of (200) Oriented SrTiO by Rubbing Method 3 / glass precursor: wash the glass slices, according to 5-20μL / cm 2 Add 0.2-2wt% PEI ethanol solution dropwise, and spin-coat at 1000-3000 rpm for 30 seconds to obtain a PEI-modified glass sheet. Use latex gloves to dip SrTiO 3 Gently rub the powder evenly on the glass sheet to get (200) crystal plane oriented SrTiO 3 / glass precursor.

[0058] (200) Oriented SrTiO Prepared by Langmuir-Blodgett Self-Assembly Method 3 / glass precursor: add 0.3-0.6g SrTiO 3 Powder, 50-100mL toluene, 5-10mL 1-butanol...

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Abstract

The invention discloses a preparation method of a crystal particle electrode with a crystal orientation characteristic, which is characterized by comprising the following steps of: preparing a crystal particle accumulation layer with a uniform crystal orientation characteristic on a substrate S; and connecting the obtained crystal particle layer with a conductive layer M to obtain the electrode with the crystal face orientation characteristic. The method is suitable for all crystal particles with multiple different crystal faces, the crystal particle electrode with uniform crystal face orientation is prepared through a one-step or two-step method, the operation is flexible, the expansibility is high, a preparation device is simple, and industrialization can be favorably achieved.

Description

technical field [0001] The invention relates to a method for preparing a crystal particle electrode with uniform crystal plane orientation characteristics, and belongs to the technical field of electrode preparation. Background technique [0002] For a long time, crystal particle electrodes, especially semiconductor electrodes, have been used in various fields, such as optoelectronics, gas sensors, electrocatalysis, solar cells, supercapacitors, etc. Due to the orderly orientation of atoms inside the crystal, some properties of semiconductors (such as electrical conductivity, thermal conductivity, magnetism, corrosion resistance, adsorption, etc.) are closely related to their exposed crystal planes, and electrodes with specific crystal plane selectivity often exhibit superior performance. At present, some methods for preparing selective electrodes with specific crystal planes have been developed, such as hydrothermal method, magnetron sputtering, laser ablation, etc. Takin...

Claims

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Application Information

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IPC IPC(8): C03C17/00C03C17/22C03C17/25H01B13/00
CPCC03C17/002C03C17/22C03C17/25H01B13/0026C03C2217/21C03C2217/28C03C2218/114C03C2218/11
Inventor 马贵军张博杨
Owner SHANGHAI TECH UNIV