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Ionic Liquid Electrolytes for Dye-Sensitized Solar Cells

Mhd Yusof, Siti Munirah (2015) Ionic Liquid Electrolytes for Dye-Sensitized Solar Cells. IRC, Universiti Teknologi PETRONAS. (Unpublished)

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Abstract

This thesis studied the effect of mixing two ionic liquids at different ratios to form binary ionic liquid solvent in the electrolyte on the efficiency of the Dye- Sensitized Solar Cells (DSSCs). 1-Propyl-3-Methylimidazolium Iodide (PMImI) is mixed with 1-Butyl-3-Methylimidazolium Thiocynate(BMmISCN) at four different ratios and the efficiency of the DSSCs is measured. The addition of BMImSCN in PMImI is to overcome the problems faced by pure ionic liquid which are high viscosity and low ion mobility that limits the transportation of iodide/triiodide and the restoration of the oxidized dye. Adding the BMImSCN to the imidazolium iodide ionic liquid can lower the viscosity of the solution and improve the iodide/triiodide diffusion in the electrolyte. The effect of mixing different ratios of these ionic liquids on the viscosity and iodide/triiodide diffusion in the solution is studied. Based on the result obtained from the experimental work, the addition of low viscosity ionic liquid which is BMImSCN into the high viscosity PMImI reduced the mass transport limitation of triiodide in the electrolyte by lowering the viscosity of the ionic liquid. The ratio 1:0.75 has been identified as the best ratio of binary ionic liquid of PMImI:BMImSCN as it has the highest efficiency among all the electrolyte. This work has provided useful insight for further improvement of binary ionic liquid electrolyte for DSSCs.

Item Type: Final Year Project
Academic Subject : Academic Department - Chemical Engineering - Separation Process
Subject: T Technology > TP Chemical technology
Divisions: Engineering > Chemical
Depositing User: Ahmad Suhairi Mohamed Lazim
Date Deposited: 22 Feb 2016 10:26
Last Modified: 25 Jan 2017 09:35
URI: http://utpedia.utp.edu.my/id/eprint/16279

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