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Method for preparing platinum catalytic electrode

A catalytic electrode and conductive glass technology, applied in the field of solar cells, can solve the problems of large amount of platinum-loaded Pt and low electrocatalytic reaction activity, etc.

Inactive Publication Date: 2004-07-14
INST OF CHEM CHINESE ACAD OF SCI
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Problems solved by technology

However, the amount of platinum-loaded Pt in the above-mentioned preparation methods is relatively large, and the I 3 - / I - low electrocatalytic activity

Method used

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  • Method for preparing platinum catalytic electrode
  • Method for preparing platinum catalytic electrode

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Embodiment 1

[0019] The concentration in 250ml is 8.0×10 -4 K in mol / L 2 PtCl 6 Add 0.4 ml of sodium acrylate (molecular weight: 94) with a concentration of 1.0 mol / L to the aqueous solution as a protective agent, then add methanol as a reducing agent in a ratio of (1 / 1, V / V), and pass argon for 15 minutes. The mixed solution was refluxed at 90°C for 2 hours. After the mixed solution was cooled to room temperature, 1.2 ml of a mixed solution of dodecylmercaptan and toluene (1 / 1, V / V) was added, and ultrasonically dispersed for 10 minutes. The organic phase solution containing platinum Pt particles was separated and uniformly coated on tin dioxide SnO 2 The conductive glass surface was dried and sintered at 380°C to obtain a platinum-loaded Pt electrode.

[0020] The amount of platinum-loaded Pt on the conductive glass, using aqua regia to dissolve platinum Pt, and then measure its content with plasma emission spectrometry (ICP), the platinum-loaded Pt amount of the prepared platinum-lo...

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Abstract

This invention relates to a preparation method for Pt catalytic electrode synthesizing nm Pt grains of small diameter and uniform distribution in a solution system then to utilize some specific functional groups in surface active agent to form a sequential absorption structures naturally on Pt grain surfaces which can be dissolved in organic solution of small polarity to make Pt grain to spread on the surface of the substrate evenly to form a sequent aggregate structure due to very good imbibition between the conduction glass surface and the organic solution to be distributed tightly on the glass surface to be sintered to form the nm structure Pt catalytic electrode with strong adhesion and high electric chemical reactivity.

Description

technical field [0001] The invention relates to solar cell technology, in particular to a method for preparing a platinum Pt catalytic electrode in a dye-sensitized solar cell. Background technique [0002] In dye-sensitized solar cells, I 3 - / I - It circulates back and forth between the working electrode and the platinum Pt counter electrode, which makes TiO 2 The dye molecules on the working electrode regenerate and receive electrons on the platinum Pt counter electrode to complete their own reduction. Therefore, as a component of the battery, the electrocatalytic performance of the platinum Pt counter electrode has an important impact on the photoelectric conversion performance of the entire battery. Reducing the energy loss caused by electrochemical polarization on the platinum Pt counter electrode can further improve the conversion efficiency of the battery. At the same time, from an economic point of view, it is necessary to minimize the amount of platinum Pt on th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/0224H01L31/18H01M4/88
CPCY02E60/50Y02P70/50
Inventor 王维波肖绪瑞林原
Owner INST OF CHEM CHINESE ACAD OF SCI
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