Mohd Azmi, Muhamad Izzat (2022) Studies of ion transport in GG-TPAL-'2 gel polymer electrolytes and its potential for dye-sensitized solar cell applications. [Project Paper] (Submitted)
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Abstract
Dye sensitized solar cells (DSSCs) have received high attention lately due to their ability to demonstrate high solar energy efficiency, low cost and easy manufacturing processes. In DSSC, electrolytes play an important role to keep the cell operating continuously. Gel polymer electrolytes (GPEs) are widely used as a medium for charge transfer in DSSC with synthetic polymers as the base material. However, synthetic polymer brings negative impact to the environment. To overcome this drawback, biopolymers were introduced in GPEs for DSSC applications. In this work, gellan gum (GG) biopolymers was used as the host polymer. Tetrapropylamrnonium iodide (TPAI) and iodine (h) salts act as the charge supplier. Dimethyl sulfoxide (DMSO) served as a plasticizer to keep the electrolyte in gel form. DMSO-TPAl-h liquid electrolytes (system 1) and GG-DMSO-TPAI-h GPEs (system 2) were formed in this study. In order to aim the highest conductivity in this study, system 1 was designed, then the highest composition that revealed the highest conductivity will selected to form GG based GPEs. Liquid electrolyte with composition of 82.27 wt.% DMSO-16.40 wt.% TPAI-1.33 wt.% b (LI3 electrolyte) in system 1 revealed the highest room temperature conductivity (liri) of (8.01+0.09) mS cm·1. To form GPEs (system 2), GG was added into LI3 electrolyte since this sample composition gives highest o-n. Electrolyte of 2.67 wt.% GG-80.07 wt.% DMSO-15.96 wt.% TPAI-1.30 wt.% h (GI2 electrolyte) showed the highest o-n of 9.05 mS cm·1. The conductivitytemperature study showed that the increase in conductivity for the electrolyte in system 2. All GPEs in system 2 was fabricated in DSSC. The DSSC with GI2 electrolyte revealed the highest power conversion efficiency (PCE) of (2.32±0.01) % along with highest short circuit current Use) of (4.97±0.01) mA cm·2, impact from the highest o-n due to high n andµ, which facilitated the redox process in DSSC. The highest lse of DSSC was supported by the lowest charge transfer resistance (Re,) of 36.7 n. Based on this work, it can be concluded that biopolymer GG-based GPEs have great potential for use in DSSC applications.
| Item Type: | Project Paper |
|---|---|
| Faculty: | Fakulti Sains |
| Depositing User: | Ms. ROHANA ALIAS |
| Date Deposited: | 20 May 2024 06:53 |
| Last Modified: | 05 Aug 2024 08:02 |
| URI: | http://psaspb.upm.edu.my/id/eprint/1852 |
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