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Effect of WS2 nano-sheets on the catalytic activity of polyaniline nano-rods based counter electrode for dye sensitized solar cell
Physica E: Low-dimensional Systems and Nanostructures ( IF 2.9 ) Pub Date : 2020-10-09 , DOI: 10.1016/j.physe.2020.114466
Muhammad Shakeel Ahmad , Nasrudin Abd Rahim , Syed shahabuddin , Shahid Mehmood , Adnan Daud Khan

The performance and commercialization of dye sensitized solar cells is very much dependent on cost effective and robust catalyst. In this study, polyaniline (PANi) nano-rods have been synthesized and the effect of tungsten disulfite (WS2) nanosheets has been investigated for the catalytic and electronic properties of polyaniline. Various concentrations of WS2 nanosheets i.e., 1 wt%, 2 wt%, 5 wt% and 7 wt% have been used to examine the effect of concentration of WS2 on overall electronic properties of PANi. Scanning electron microscopy (SEM) and high resolution transmission electron microscopy (TEM) have been employed for morphological studies. X-ray diffraction (XRD) patterns have been studied for compositional analysis. Fourier transformed infrared (FTIR) along with cyclic voltammetry (CV) have been utilized to investigate the catalytic activity in specified electrolyte and to identify unsaturated redox-active functionalities respectively. Sun simulator has been employed to study incident photo conversion efficiency (IPCE), open circuit voltage (Voc) and short circuit current (Isc). Finally, electron impedance spectroscopy has been employed to study the electronic resistance at the interfaces. An increase in overall electronic and device performance has been observed. The specimens containing 5 wt% WS2 in PANi exhibited 7.32% IPCE which is 92.14% equivalent to platinum (Pt) counter electrode based reference DSSC.



中文翻译:

WS 2纳米片对基于聚苯胺纳米棒的染料敏化太阳能电池对电极催化活性的影响

染料敏化太阳能电池的性能和商业化在很大程度上取决于具有成本效益的耐用催化剂。在这项研究中,已经合成了聚苯胺(PANi)纳米棒,并研究了二硫化钨(WS 2)纳米片对聚苯胺的催化和电子性能的影响。各种浓度的WS 2纳米片(即1 wt%,2 wt%,5 wt%和7 wt%)已用于检查WS 2浓度的影响关于PANi的整体电子性能。扫描电子显微镜(SEM)和高分辨率透射电子显微镜(TEM)已用于形态学研究。X射线衍射(XRD)模式已被研究用于成分分析。傅里叶变换红外(FTIR)与循环伏安法(CV)一起用于研究特定电解质中的催化活性并分别确定不饱和氧化还原活性官能团。Sun模拟器已用于研究入射光转换效率(IPCE),开路电压(Voc)和短路电流(Isc)。最后,电子阻抗谱已用于研究界面处的电子电阻。已经观察到整体电子和设备性能的提高。含5 wt%WS的样品PANi中的2表现出7.32%的IPCE,相当于基于铂(Pt)对电极的参考DSSC的92.14%。

更新日期:2020-10-16
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