Electrocatalytic and structural properties and computational calculation of PAN-EC-PC-TPAI-I(2) gel polymer electrolytes for dye sensitized solar cell application.
Electrocatalytic and structural properties and computational calculation of PAN-EC-PC-TPAI-I(2) gel polymer electrolytes for dye sensitized solar cell application.
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以聚丙烯腈（PAN）聚合物、碳酸乙烯酯（EC）、碳酸丙烯酯（PC）为增塑剂，采用不同配比的四丙基碘化铵（TPAI）盐制备凝胶聚合物电解质（GPE）。线性扫描伏安法（LSV）和电化学阻抗谱（EIS）的测量使用非阻塞铂电极对称电池。对于含30%TPAI的GPE，极限电流（Jlim）、三碘离子的表观扩散系数和交换电流分别为12.76 mA cm-2、23.41 × 10 - 7 cm 2 s-1和11.22-14.24 mA cm-2。在不同TPAI含量的GPE中，这些值是最高的。为了测定离子电导率，使用具有阻断电极的EIS技术。含30%TPAI的GPE具有最低的体阻抗Rb（22 Ω）、最高的离子电导率（3.62 × 10− 3S cm−1）和最低的活化能。利用傅里叶变换红外光谱（FTIR）和X射线衍射（XRD）技术进行结构表征。通过红外光谱研究了PAN、EC、PC和TPAI之间的相互作用。XRD峰的上移表明聚合物-盐相互作用和阳离子（TPA+离子）与主体聚合物基质中的N原子处的含有位点-CN的孤对电子的可能络合。另一方面，计算研究表明，TPAI-PAN基GPE具有最低的前线轨道带隙，这与GPE的电化学和电催化性能的增强相一致。用这些GPE制造的染料敏化太阳能电池（DSSC）显示出JSC（19.75 mA cm−2）和VOC（553.8 mV）在GPE中是最高的，因此对于相同的电解质获得了最高的效率η（4.76%）。以聚丙烯腈（PAN）聚合物、碳酸乙烯酯（EC）、碳酸丙烯酯（PC）为增塑剂，采用不同配比的四丙基碘化铵（TPAI）盐制备凝胶聚合物电解质（GPE）。
In this study, gel polymer electrolytes (GPEs) were prepared using polyacrylonitrile (PAN) polymer, ethylene carbonate (EC), propylene carbonate (PC) plasticizers and different compositions of tetrapropylammonium iodide (TPAI) salt. Linear sweep voltammetry (LSV) and electrochemical impedance spectroscopy (EIS) measurements were done using non-blocking Pt-electrode symmetric cells. The limiting current (Jlim), apparent diffusion coefficient of triiodide ions and exchange current were found to be 12.76 mA cm−2, 23.41 × 10−7 cm2 s−1 and 11.22–14.24 mA cm−2, respectively, for the GPE containing 30% TPAI. These values are the highest among the GPEs with different TPAI contents. To determine the ionic conductivity, the EIS technique was employed with blocking electrodes. The GPE containing 30% TPAI exhibited the lowest bulk impedance, Rb (22 Ω), highest ionic conductivity (3.62 × 10−3 S cm−1) and lowest activation energy. Fourier transform infrared (FTIR) spectroscopy and X-ray diffraction (XRD) techniques were utilized for structural characterization. Functional group interactions among PAN, EC, PC and TPAI were studied in the FTIR spectra of the GPEs. An up-shift of the XRD peak indicates the polymer–salt interaction and possible complexation of the cation (TPA+ ion) with the lone pair of electrons containing site –CN at the N atom in the host polymer matrix. On the other hand, computational study shows that TPAI-PAN based GPE possesses the lowest frontier orbital bandgap, which coincided with the enhanced electrochemical and electrocatalytic performance of GPE. The dye-sensitized solar cell (DSSC) fabricated with these GPEs showed that the JSC (19.75 mA cm−2) and VOC (553.8 mV) were the highest among the GPEs and hence the highest efficiency, η (4.76%), was obtained for the same electrolytes. In this study, gel polymer electrolytes (GPEs) were prepared using polyacrylonitrile (PAN) polymer, ethylene carbonate (EC), propylene carbonate (PC) plasticizers and different compositions of tetrapropylammonium iodide (TPAI) salt.
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影响因子：
6.7
作者：
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通讯作者：
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影响因子：
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影响因子：
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