Method for improving performance of nanofiber membrane of dye-sensitized battery by synergistic action of carbon nanotubes and titanium tetrachloride

Abstract

The invention discloses a method for improving the performance of a nanofiber membrane of a dye-sensitized battery by synergistic action of carbon nanotubes and titanium tetrachloride. The method comprises the following steps of: 1) doping multi-wall carbon nanotubes in TiO2 precursor spinning solution; and 2) carrying out aftertreatment on a sintered TiO2 nanofiber membrane by using titanium tetrachloride solution. Due to addition of the multi-wall carbon nanotubes, the transmission capability of photoproduction electrons and the strength of the fiber membrane are improved. Due to treatment by the titanium tetrachloride, the absorbing quantity of the membrane for sensitized dyes is increased, the combination of the photoproduction electrons, the oxidation-state dyes and electrolyte is restrained, and the density of the electrons on a TiO2 conduction band is improved. Under the synergistic action of doping of the carbon nanotubes and treatment of the titanium tetrachloride, the performance of the TiO2 nanofiber membrane prepared on the basis of an electrostatic spinning technology is improved, and the total photoelectric conversion efficiency of the dye-sensitized solar battery is improved by 15%-23%.

Description

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AI Technical Summary

Benefits of technology

This patented technology involves adding magnetic particles (MWDCNT's), such as iron oxide or manganoferrite, into titania for better electrical performance while maintaining high transparency at different wavelength ranges from UV rays through infrared waves. These added materials can enhance the photosensitive properties of the material by increasing their ability to absorb energy during sunlight exposure without losing effectiveness over longer periods of time due to reduced degradation caused by environmental conditions like temperature changes. Additionally, they are able to scatter evenly throughout the fibers themselves making them stronger than other types of semiconductors that have been previously used with this type of composition. Overall, this new method provides improved solar cell characteristics and increased power output compared to previous methods.

Problems solved by technology

This patent describes various technical solutions related to developing novel materials called quantum dots or nanosheets, specifically those containing metal atoms like gold, silver, cobalt, rhodamene, etc., capable of generating electrical current when exposed to sunlight. These quantum dents absorb incident visible rays and convert these lights into electricity through photosynthesis reactions. Quantum dyes provide promise because their ability to generate more efficient electronic signals makes them ideal candidates for use in applications involving low costs and improved environmental sustainability. Additionally, certain types of quantum dangers exist due to issues associated with particle boundary formation during fabrication processes, making them difficult to control and enhance device efficacy.

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