Bhattacharya Somdatta, Roy Indroneil, Tice Aaron, Chapman Caitlyn, Udangawa Ranodhi, Chakrapani Vidhya, Plawsky Joel L, Linhardt Robert J
Howard P. Isermann Department of Chemical and Biological Engineering, Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, New York 12180, United States.
Department of Mechanical, Aerospace and Nuclear Engineering, Rensselaer Polytechnic Institute, Troy, New York 12180-3590, United States.
ACS Appl Mater Interfaces. 2020 Apr 29;12(17):19369-19376. doi: 10.1021/acsami.9b21696. Epub 2020 Apr 20.
Electrospinning is a simple method for producing nanoscale or microscale fibers from a wide variety of materials. Intrinsically conductive polymers (ICPs), such as polyaniline (PANI), show higher conductivities with the use of secondary dopants like -cresol. However, due to the low volatility of most secondary dopants, it has not been possible to electrospin secondary doped ICP fibers. In this work, the concept of secondary doping has been applied for the first time to electrospun fibers. Using a novel design for rotating drum electrospinning, fibers were efficiently and reliably produced from a mixture of low- and high-volatility solvents. The conductivity of electrospun PANI-poly(ethylene oxide) (PEO) fibers prepared was 1.73 S/cm, two orders of magnitude higher than the average value reported in the literature. These conductive fibers were tested as electrodes for supercapacitors and were shown to have a specific capacitance as high as 3121 F/g at 0.1 A/g, the highest value reported, thus far, for PANI-PEO electrospun fibers.
静电纺丝是一种用多种材料制备纳米级或微米级纤维的简单方法。本征导电聚合物（ICPs），如聚苯胺（PANI），在使用如对甲酚等二次掺杂剂时表现出更高的导电性。然而，由于大多数二次掺杂剂的挥发性低，无法静电纺丝二次掺杂的ICP纤维。在这项工作中，二次掺杂的概念首次应用于静电纺丝纤维。使用一种新颖的转鼓式静电纺丝设计，从低挥发性和高挥发性溶剂的混合物中高效且可靠地生产出纤维。制备的静电纺丝聚苯胺 - 聚环氧乙烷（PEO）纤维的电导率为1.73 S/cm，比文献报道的平均值高两个数量级。这些导电纤维作为超级电容器的电极进行了测试，结果表明在0.1 A/g时具有高达3121 F/g的比电容，这是迄今为止报道的聚苯胺 - PEO静电纺丝纤维的最高值。
