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Preparation method of silver-polyaniline composite material for solar cell

A technology for solar cells and composite materials, which is applied in the field of preparation of silver-polyaniline composite materials for solar cells, can solve the problems of excessive oxidant, failure to complete the self-assembly process, and the like, and achieves the effect of improving electrical conductivity

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

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Problems solved by technology

[0004] The method mentioned in the above patents is mainly to synthesize PANI conductive film on the surface of a composite material, and the polymerization methods used are all in-situ polymerization methods, but the above-mentioned schemes are There is an excess of oxidants, these excess oxidants have not completed the self-assembly process, but are in a free state, and the free oxidants will induce the polymerization of aniline monomers to produce free PANI

Method used

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  • Preparation method of silver-polyaniline composite material for solar cell
  • Preparation method of silver-polyaniline composite material for solar cell
  • Preparation method of silver-polyaniline composite material for solar cell

Examples

Experimental program
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Effect test

Embodiment 1

[0029] Preparation of composite material with PANI coated matrix Ag

[0030] 1) Take a 500mL beaker, dissolve 0.0482g of silver nitrate into 250mL of deionized water, stir evenly, and configure 250mL of electrolyte obtained by electrochemically synthesizing Ag.

[0031] 2) Put the prepared electrolyte on a constant temperature magnetic stirrer, and use the two Pt grid electrodes as the positive and negative poles of the external DC power supply respectively. After connecting the equipment, the electrochemical deposition reaction is performed at a voltage of 5V for 2 hours. Ag was generated and the electrode was removed, rinsed with deionized water and dried.

[0032] 3) Take 9.8mL of sulfuric acid for laboratory use, add 50.2mL of DI (i.e. deionized water) to configure a 60mL3mol / L sulfuric acid solution, then add 1mL of aniline and stir evenly and return to room temperature, as the electrolyte for electrochemically synthesizing PANI .

[0033] 4) Put the prepared electrolyt...

Embodiment 2

[0036] 1) Take a 500mL beaker, dissolve 0.0482g of silver nitrate into 250mL of deionized water, stir evenly, and configure 250mL of electrolyte obtained by electrochemically synthesizing Ag.

[0037] 2) Put the prepared electrolyte on a constant temperature magnetic stirrer, and use the two Pt grid electrodes as the positive and negative poles of the external DC power supply respectively. After connecting the equipment, the electrochemical deposition reaction is performed at a voltage of 5V for 2 hours. Ag was generated, the electrode was removed, rinsed with distilled water and dried.

[0038] 3) Take 9.8mL laboratory sulfuric acid, add 50.2mL DI to configure 60mL 3mol / L sulfuric acid solution, then add 2mL aniline and stir evenly and return to room temperature, as the electrolyte for electrochemically synthesizing PANI.

[0039] 4) Put the prepared electrolyte on a constant temperature magnetic stirrer, attach the Ag-attached Pt mesh as the anode, use Pt as the cathode, con...

Embodiment 3

[0041] 1) Take a 500mL beaker, dissolve 0.0482g of silver nitrate into 250mL of deionized water, stir evenly, and configure 250mL of electrolyte obtained by electrochemically synthesizing Ag.

[0042] 2) Put the prepared electrolyte on a constant temperature magnetic stirrer, and use the two Pt grid electrodes as the positive and negative poles of the external DC power supply respectively. After connecting the equipment, the electrochemical deposition reaction is performed at a voltage of 5V for 2 hours. Ag was generated, the electrode was removed, rinsed with distilled water and dried.

[0043] 3) Take 9.8mL laboratory sulfuric acid, add 50.2mL DI to configure 60mL 3mol / L sulfuric acid solution, then add 3mL aniline, stir well and return to room temperature, as the electrolyte for electrochemical synthesis of PANI.

[0044] 4) Put the prepared electrolyte on a constant temperature magnetic stirrer, attach the Ag Pt mesh as the anode, connect the equipment, and electrochemical...

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Abstract

The invention relates to a preparation method of a silver-polyaniline composite material for a solar cell. The preparation method of the silver-polyaniline composite material for the solar cell comprises the following steps: (1) taking a silver nitrate solution as an electrolyte, taking two Pt nets as an anode and a cathode separately, and carrying out electrochemical deposition to obtain a Pt net deposited with Ag; (2) adding deionized water into sulfuric acid to prepare a sulfuric acid solution, adding aniline, uniformly stirring, and recovering to room temperature to obtain an aniline sulfuric acid solution; and (3) by taking the Pt net deposited with Ag in the step (1) as an anode, taking Pt as a cathode and taking an aniline sulfuric acid solution as an electrolyte, continuing secondary deposition to obtain the target product. Compared with the prior art, according to the invention, a layer of PANI conductive film is attached to the surface of common micron silver powder of the solar cell through the electrochemical deposition method, so that transmission of electrons in the composite material is improved, impedance of the composite material is reduced, and the conductivity is improved.

Description

technical field [0001] The invention belongs to the technical field of composite material preparation, and relates to a method for preparing a silver-polyaniline composite material for solar cells. Background technique [0002] Silver powder is an important part of the positive paste of solar cells. Only the conductive paste with silver powder that meets specific conditions can have good screen printing performance. After sintering, it will form a front silver with high square resistance and fine grid lines. electrode. Generally, the silver powder used in the positive silver paste of solar cells needs to have the characteristics of regular shape, narrow particle size distribution, micron or submicron level, good dispersibility, and high tap density. At the same time, in order to avoid the aggregation of silver particles, it is necessary to add a certain amount of dispersant, which reduces the conductivity of silver to a certain extent. [0003] As a key member of the condu...

Claims

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Application Information

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IPC IPC(8): C25D3/46C25D9/02C25C1/20C25D7/00
CPCC25D3/46C25D9/02C25C1/20C25D7/00
Inventor 李向清沈润泽杨宇秦利霞康诗钊
Owner SHANGHAI INST OF TECH
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