Method for preparing Nano platinum carried catalysis electrode in Nano crystal sensitized solar battery

Abstract

Using self-assembly technique loads Nano granules of platinum in hydrosol of compositive Nano platinum to surface of conducting substrate of containing mercaptan functional group after modification of L-B membrane or silanization so as to realize even, tight and discontinuous distribution of Nano granules of platinum on surface of conducting substrate. Using high sintering or vacuum treatment in low temperature forms Nano platinum carried catalysis electrode in high chemical activity. Electrode produced in the invention possesses very low platinum load so as to lower cost for preparing solar battery. The invention is applicable to preparation of flexible electrode, especially suitable to electrode pair in Nano crystal sensitized solar battery.

Description

technical field

[0001] The invention belongs to the technical field of manufacturing a catalytic counter electrode in a nanocrystalline sensitized solar cell, and in particular relates to a preparation method of a nanometer-loaded platinum catalytic electrode. Background technique

[0002] In nanocrystalline sensitized solar cells, the reaction occurring on the counter electrode is I 3 - +2e(Pt)→3I - . I 3- Diffusion to the counter electrode through the electrolyte solution, the electrons entered by the counter electrode are reduced to I - , while I - Diffusion from the counter electrode into the electrolyte solution, the TiO 2 Oxidized molecules of the dye are reduced on the working electrode. It can be seen that the redox reaction of iodine plays the role of restoring the dye, relaying the charge, and making the battery work stably and continuously for a long time, but I 3 - The reduction reaction speed on most electrodes (including bright platinum electrodes) is ...

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