Method for preparing counter electrode of dye sensitization solar battery based on carbon nanotube and platinum

Abstract

The invention discloses a preparation method of a counter electrode of a dyestuff sensitized solar cell on the basis of a carbon nanotube and platinum. The method comprises the following steps: chloroplatinic acid is added into isopropyl alcohol for complete dissolution, thus obtaining a chloroplatinic acid isopropyl alcohol solution which is added with carbon nanotube and evenly stirred, thus obtaining a chloroplatinic acid isopropyl alcohol solution containing the carbon nanotube; conductive glass which is taken as a substrate is cleaned; the solution is coated on the surface of the conductive glass in a spin coating way and naturally dried for more than 24h in the air; and the conductive glass coated with the solution is put into a sintering furnace.

Description

(1) Technical field: [0001] The invention belongs to the field of dye-sensitized solar cells, and relates to a dye-sensitized solar cell counter electrode based on carbon nanotubes and metal platinum. (two) background technology: [0002] In 1991, the Laboratory of Ecole Polytechnique de Lausanne, Switzerland published in the authoritative journal Nature (O’Regan B., M., 1991, 353, 737) reported the research results of a brand-new dye-sensitized solar cell, which immediately received widespread international attention and attention. [0003] Dye-sensitized solar cells are mainly composed of the following parts: photoanode, nanoporous semiconductor film, dye sensitizer, electrolyte and counter electrode. The battery takes I 3 The / I redox couple acts as a medium to transfer charge between the photoanode and the counter electrode. During this media regeneration cycle, the oxidized species (I 2 or I 3 ) is re-reduced to I on the counter electrode. In this process, it is...

AI Technical Summary

Problems solved by technology

However, the surface area of ​​platinum electrodes obtained by ordinary methods is relatively small, and the catalytic ability of platinum on the surface for the reduction reaction is also weak, resulting in low overall energy efficiency of the entire battery; and platinum electrodes with large surface areas have large specific surface areas. It is conducive to improving the catalytic performance of the counter electrode, reducing the energy consumption of the battery on the counter electrode, thereby improving the photoelectric conversion efficiency of the battery