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首页> 外文期刊>Journal of Applied Polymer Science >Comparative performance analysis of electrospun TiO2 embedded poly(vinylidene fluoride) nanocomposite membrane for supercapacitors
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Comparative performance analysis of electrospun TiO2 embedded poly(vinylidene fluoride) nanocomposite membrane for supercapacitors

机译：Electroput TiO2嵌入式聚（偏二氟乙烯）纳米复合膜对超级电容器的比较性能分析

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摘要

For an efficient energy storage system, effective material is to be used. In the present work, novel poly(vinylidene fluoride)/titanium oxide (PVdF/TiO2) composite membranes were developed using electrospinning technique, as separator for supercapacitors. Different weight percentages of TiO2 nanoparticle (0, 5, 10, 15, and 20 wt%) were mixed with 20 wt% of PVdF in a 50:50 wt% of tetrahydrofuran and dimethylacetamide solvent. Various physical and electrochemical properties including fiber diameter, thermal stability, crystallinity, porosity, and electrolytic uptake were studied to identify the best membrane with optimum TiO2 wt% exhibiting superior characteristics. SEM and TGA studies revealed that the developed PVdF/TiO2 composite membrane with 10 wt% showed improved properties with a lower average diameter of about 66 +/- 8 nm, enhanced thermal stability up to 513.15 degrees C and higher porosity of 89%, respectively compared to other membranes. The crystallinity, ionic conductivity, and specific capacitance of the nonwoven separator membranes were determined using X-ray diffraction technique, electrolytic uptake, and charge-discharge studies, respectively. The present study revealed that the addition of TiO2 nanoparticles improved the physical and thermochemical properties of the separator membrane substantially and PVdF/TiO2 composite membrane with 10 wt% displayed superior performance compared to other membranes.
机译：对于高效的储能系统，需要使用有效的材料。在本研究中，利用静电纺丝技术开发了新型聚偏氟乙烯/氧化钛（PVdF/TiO2）复合膜，作为超级电容器的分离器。将不同重量百分比的TiO2纳米颗粒（0、5、10、15和20 wt%）与20 wt%的PVdF在50:50 wt%的四氢呋喃和二甲基乙酰胺溶剂中混合。研究了各种物理和电化学性质，包括纤维直径、热稳定性、结晶度、孔隙率和电解吸收，以确定最佳膜，最佳TiO2重量百分比表现出优越的特性。SEM和TGA研究表明，与其他膜相比，开发的10 wt%PVdF/TiO2复合膜的平均直径约为66+/-8 nm，热稳定性高达513.15℃，孔隙率高达89%，性能得到改善。通过X射线衍射技术、电解吸收和充放电研究，分别测定了非织造分离膜的结晶度、离子电导率和比电容。目前的研究表明，添加TiO2纳米颗粒显著改善了分离膜的物理和热化学性质，与其他膜相比，重量分数为10%的PVdF/TiO2复合膜表现出优越的性能。

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