水作为染料敏化太阳能电池凝胶电解质中的双重功能增塑剂和助溶剂。

IF 4.2 3区 化学 Q2 POLYMER SCIENCE Macromolecular Rapid Communications Pub Date : 2024-10-15 DOI:10.1002/marc.202400481
Z L Goh, N K Farhana, Fathiah Kamarulazam, M Pershaanaa, Shahid Bashir, K Ramesh, S Ramesh
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引用次数: 0

摘要

本研究提出了一种利用天然可再生材料凝胶聚合物电解质 (GPE) 开发环保型染料敏化太阳能电池 (DSSC) 的新方法,从而减少对不可持续溶剂的依赖。在极性钝化溶剂(特别是碳酸乙烯酯/碳酸丙烯酯(EC/PC))中加入水,水的质量分数各不相同(0:100 到 100:0)。两亲性羟丙基纤维素(HPC)天然聚合物被用于在这种水-EC/PC 共溶剂体系中配制 GPE,成功实现了高达 50:50 质量分数的凝胶化。水的加入降低了 GPE 的凝胶强度和粘度。水起到了增塑剂的作用,增强了聚合物链的流动性,并形成了更柔韧、更透气的结构。这提高了离子扩散系数和离子流动性,使最大离子电导率达到 18.17 mS cm-1。使用这些 GPE 的 DSSC 的最高效率为 5.81%,短路电流密度提高,重组损耗降低。不过,有些成分出现了滞后现象,影响了其稳定性。质量分数为 40:60 的 GPE 虽然效率较低(4.83%),但由于不存在滞后现象,因此具有出色的长期稳定性,成为性能最好的样品。这项工作证明了在水性系统中使用凝胶聚合物电解质的可行性和益处,从而提高了 DSSC 的效率和可持续性。
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Water as Dual-Function Plasticizer and Cosolvent in Gel Electrolytes for Dye-Sensitized Solar Cells.

This study presents a novel approach to developing eco-friendly dye-sensitized solar cells (DSSCs) using natural and renewable materials for gel polymer electrolytes (GPEs), reducing reliance on unsustainable solvents. Water is added to polar aprotic solvents, specifically ethylene carbonate/propylene carbonate (EC/PC), across various mass fractions (0:100 to 100:0). An amphiphilic hydroxypropyl cellulose (HPC) natural polymer is employed to formulate GPEs within this water-EC/PC cosolvent system, achieving successful gelation up to 50:50 mass fractions. Incorporating water reduced the gel strength and viscosity of the GPEs. Water acted as a plasticizer, enhancing the polymer chains mobility, and creating a more flexible and permeable structure. This increased ion diffusion coefficients and ion mobility, resulting in a maximum ionic conductivity of 18.17 mS cm-1. The highest efficiency achieved in DSSCs using these GPEs is 5.81%, with elevated short-circuit current density and reduced recombination losses. However, some compositions experienced syneresis, affecting their stability. The GPE with a 40:60 mass fraction exhibited superior long-term stability because it is free from syneresis, though it achieved a lower efficiency (4.83%), making it the best-performing sample. This work demonstrates the feasibility and benefits of using gel polymer electrolytes in an aqueous system, improving DSSC efficiency and sustainability.

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来源期刊
Macromolecular Rapid Communications
Macromolecular Rapid Communications 工程技术-高分子科学
CiteScore
7.70
自引率
6.50%
发文量
477
审稿时长
1.4 months
期刊介绍: Macromolecular Rapid Communications publishes original research in polymer science, ranging from chemistry and physics of polymers to polymers in materials science and life sciences.
期刊最新文献
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