ABSTRACT

The concentration effect of molybdenum disulphide (MoS₂) on the catalytic activity of polyaniline (PANi)-based counter electrode (CE) was investigated for cost-effective replacement of both transparent conducting oxide (TCO) and platinum (Pt) for dye-sensitised solar cell application (DSSC). Simple chemical mixing is employed to introduce 0.5 wt%, 2 wt%, 5 wt%, 7 wt% and 9 wt% MoS₂ nanoparticles in the optimised thickness of PANi matrix. The drop-casting method is used to achieve a uniform layer on a normal glass substrate. Morphology and structural composition were studied using scanning electron microscopy and X-ray diffraction. Fourier transform infrared was used to identify redox-active functionalities. Electrochemical impedance spectroscopy and cyclic voltammetry were employed to study electron transfer and catalytic activity. Finally, I–V testing was carried out using asun simulator. Aremarkable 9.02% efficiency has been exhibited by PANi-7 wt% MoS₂ nanocomposite CE-based DSSC which is 9.73% higher compared to TCO-Pt CE-based DSSC.

摘要

研究了二硫化钼 (MoS ₂ ) 对聚苯胺 (PANi) 基对电极 (CE) 催化活性的浓度影响，以经济有效地替代透明导电氧化物 (TCO) 和铂 (Pt) 用于染料敏化太阳能电池应用（DSSC）。采用简单的化学混合来引入 0.5 wt%、2 wt%、5 wt%、7 wt% 和 9 wt% MoS ₂ 纳米粒子在 PANi 基质的优化厚度中。滴铸法用于在普通玻璃基板上获得均匀的层。使用扫描电子显微镜和 X 射线衍射研究了形态和结构组成。傅里叶变换红外用于识别氧化还原活性功能。电化学阻抗谱和循环伏安法用于研究电子转移和催化活性。最后，使用 asun 模拟器进行 I-V 测试。基于 PANi-7 wt% MoS ₂ 纳米复合材料 CE 的 DSSC 表现出显着的 9.02% 效率，与基于 TCO-Pt CE 的 DSSC 相比高 9.73%。