Preparation method of low-cost quasi solid electrolyte for dye sensitized solar cell

A technology for solar cells and dye sensitization, applied in the field of dye-sensitized solar cells, can solve the problems of difficulty in ionic liquid synthesis, limited application of ionic liquids, complex synthesis methods, etc., and achieve high photoelectric performance, photoelectric conversion efficiency, and large ionic conductivity. rate and stability, the effect of high ionic conductivity

Active Publication Date: 2016-04-20
CENT SOUTH UNIV
View PDF3 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the synthesis of ionic liquids used in this method is difficult and expensive.
The Chinese patent application with the publication number CN101635200A discloses a dye-sensitized solar cell electrolyte and its preparation method: the non-polymeric ionic liquid polymeric ionic liquids ( one of), ionic liquid cross-linking agent and initiators (benzoin ether, One of them) after mixing evenly, the quasi-solid polymer gel electrolyte is prepared by in-situ polymerization. The electrolyte prepared by this method has good bonding performance and is easy to package; but the photoelectric conversion efficiency of the battery using this electrolyte needs to be further improved , the preparation method is more complex
[0004] It can be seen from the above that ionic liquids (imidazolium, sulfonium, pyridinium and guanidinium salts) are a common component of quasi-solid-state electrolytes, which play a huge role in increasing the photoelectric performance of batteries, but due to their complex synthesis methods And the high cost limits the application of ionic liquids in optoelectronic devices. For example, the commonly used 1,3-dimethylimidazolium iodide salt (CAS No. 4333-62-4) is still priced at ￥656 on the official website of Bailingwei. / 5g

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A method for preparing a quasi-solid-state electrolyte for low-cost dye-sensitized solar cells of the present invention, comprising the following steps:

[0024] (1) Preparation of deep eutectic solvent: Weigh 12.000g of solid urea and 13.950g of solid choline chloride that have been fully dried and dehydrated at room temperature, put them into a brown bottle, place them in a water bath at 80°C and heat and stir for 2 hours until completely Transform into a colorless transparent liquid. Take it out, put it in a vacuum drying oven and dry it for 16 hours, then take it out, it is a deep eutectic solvent.

[0025] (2) Preparation of electrolyte: Take 20.45g NMP, put it into a 60mL brown bottle, add 0.4301g agarose, stir for 4 hours under the condition of heating in a water bath at 80°C, take out the brown bottle, add 0.2782g I 2 and 0.1261g LiI, stirred at room temperature for 4.3h, after the stirring was completed, took 2.62g of the deep eutectic solvent prepared in step...

Embodiment 2

[0031] A method for preparing a quasi-solid-state electrolyte for low-cost dye-sensitized solar cells of the present invention, comprising the following steps:

[0032] (1) Preparation of deep eutectic solvent: Weigh 12.000 g of solid urea and 13.530 g of solid choline chloride that have been fully dried and dehydrated at room temperature, put them into a brown bottle, heat and stir in a water bath at 82°C for 2.2 hours, until Completely transformed into a colorless transparent liquid. Take it out, put it in a vacuum drying oven and dry it for 18 hours, then take it out, it is a deep eutectic solvent.

[0033] (2) Preparation of electrolyte: Take 20.45g NMP into a 60mL brown bottle, add 0.5153g agarose, stir for 4.2h under the condition of heating in a water bath at 82°C, take out the brown bottle, add 0.2563g I 2 and 0.1231g LiI, stirred at room temperature for 4.7h, after the stirring was completed, took 4.11g of the deep eutectic solvent prepared in step (1), put it into a...

Embodiment 3

[0039] A method for preparing a quasi-solid-state electrolyte for low-cost dye-sensitized solar cells of the present invention, comprising the following steps:

[0040] (1) Preparation of deep eutectic solvent: Weigh 12.000 g of solid urea and 13.000 g of solid choline chloride that have been fully dried and dehydrated at room temperature, put them into a brown bottle, heat and stir in a water bath at 84°C for 2.4 hours, until Completely transformed into a colorless transparent liquid. Take it out, put it in a vacuum drying oven and dry it for 20 hours, then take it out, it is a deep eutectic solvent.

[0041] (2) Preparation of electrolyte: Take 20.45g NMP into a 60mL brown bottle, add 0.6045g agarose, stir for 4.3h under the condition of heating in a water bath at 85°C, take out the brown bottle, add 0.2802g I 2 and 0.1398g LiI, stirred at room temperature for 5h, after the stirring was completed, took 12.27g of the deep eutectic solvent prepared in step (1), put it into a ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a preparation method of a low-cost quasi-solid electrolyte for a dye sensitized solar cell. The preparation method includes the following steps that: (1) a deep eutectic solvent is prepared: a hydrogen bond donor and a hydrogen bond acceptor are mixed uniformly and are dried, so that the deep eutectic solvent can be obtained, wherein the hydrogen bond donor is urea or glycerol, and the hydrogen bond acceptor is choline chloride or choline bromide; and (2) the quasi solid state electrolyte is prepared: agarose is added into N-methyl pyrrolidone at first, and an obtained mixture is stirred evenly, and then, I2 and LiI are added into the mixture, and a newly-obtained mixture is stirred evenly, and finally, the deep eutectic solvent is added into the mixture, and the deep eutectic solvent and the mixture are mixed evenly, so that the quasi-solid electrolyte can be obtained. The quasi-solid electrolyte obtained through adopting the preparation method has high ionic conductivity and stability. The deep eutectic solvent adopted by the preparation method of the invention is low in cost and easy to synthetise, and has high ionic conductivity. When the quasi-solid electrolyte is applied to an optoelectronic device, the optoelectronic device can maintain excellent photoelectric performance and high photoelectric conversion efficiency.

Description

technical field [0001] The invention belongs to the field of dye-sensitized solar cells, in particular to a preparation method of a low-cost quasi-solid electrolyte for dye-sensitized solar cells based on a deep eutectic solvent. Background technique [0002] Dye-sensitized solar cells (DSSC) have a simple preparation process and low cost, and have great advantages in large-scale industrial applications. They are a type of solar cells with wide application prospects; their main components include: photosensitizer (dye) , electrolyte (including redox pairs), counter electrode, conductive glass and titanium dioxide photoanode; among them, the electrolyte is responsible for transporting charges and is an important part of DSSC. [0003] The electrolyte mainly includes: redox couple with good reversibility (I - / I 3- ), solvents and additives for dissolving redox pairs. According to the state of existence, it is divided into liquid electrolyte, quasi-solid electrolyte and sol...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): H01G9/022H01G9/028H01G9/20
CPCY02E10/542H01G9/022H01G9/0029H01G9/0036H01G9/028H01G9/2004H01G9/2013
Inventor 杨英张政郭学益高菁
Owner CENT SOUTH UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap