Ko Eui Jin, Hong Jisu, Park Chan Eon, Moon Doo Kyung
Nano and Information Materials (NIMs) Lab., Department of Chemical Engineering, College of Engineering, Konkuk University 1 Hwayang-dong, Gwangjin-gu Seoul 05029 Republic of Korea
Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH) Pohang 790-784 Republic of Korea
Nanoscale Adv. 2019 Sep 16;1(11):4384-4392. doi: 10.1039/c9na00314b. eCollection 2019 Nov 5.
Acrylic monomers, 4-hydroxybutyl acrylate (HBA) and 2-carboxyethyl acrylate (CEA), were each co-polymerized with styrene sulfonate in 10 mol% ratio to synthesize two types of anionic polyelectrolytes, P(SS--HBA) and P(SS--CEA), respectively. Through oxidative polymerization, two types of PEDOT composites (PEDOT:P(SS--HBA) and PEDOT:P(SS--CEA)) were synthesized, to which the anionic templates were applied as dopants. The composites were similar to PEDOT:PSS; however, crosslinking occurred with an increase in annealing temperature after film casting, which increased the electrical conductivity and hydrophobicity. The composites were applied as electrodes to PVDF-based piezoelectric nanogenerators (PNGs) having an electrode/PVDF/electrode structure. The output voltage, current, and maximum output power of PNG-2D(60) (PEDOT:P(SS--HBA)) annealed at a mild temperature (60 °C) were 4.12 V, 817.3 nA, and 847.5 nW, respectively, while those of PNG-3D(60) (PEDOT:P(SS--CEA)) annealed at 60 °C were 3.75 V, 756.5 nA, and 716.9 nW, respectively. Thus, the composites showed 13.4% and 11.3% improvements in the maximum output power compared with that of PNG-2D & 3D(RT) dried at room temperature, respectively. These results indicated 27.4% and 7.8% improvements, respectively, compared with PNG-1D(60) in which PEDOT:PSS without any crosslinking effect was applied. The PNGs demonstrated high potential as power sources owing to their sensitivity and excellent charging voltage performance for a 1 μF capacitor.
丙烯酸单体，丙烯酸4-羟丁酯（HBA）和丙烯酸2-羧乙酯（CEA），分别与苯乙烯磺酸盐以10 mol%的比例共聚，以合成两种类型的阴离子聚电解质，分别为P(SS-HBA)和P(SS-CEA)。通过氧化聚合，合成了两种类型的PEDOT复合材料（PEDOT:P(SS-HBA)和PEDOT:P(SS-CEA)），并将阴离子模板作为掺杂剂应用于其中。这些复合材料与PEDOT:PSS相似；然而，在流延成膜后，随着退火温度的升高发生了交联，这提高了电导率和疏水性。这些复合材料被用作具有电极/PVDF/电极结构的基于PVDF的压电纳米发电机（PNG）的电极。在温和温度（60°C）下退火的PNG-2D(60)（PEDOT:P(SS-HBA)）的输出电压、电流和最大输出功率分别为4.12 V、817.3 nA和847.5 nW，而在60°C下退火的PNG-3D(60)（PEDOT:P(SS-CEA)）的输出电压、电流和最大输出功率分别为3.75 V、756.5 nA和716.9 nW。因此，与在室温下干燥的PNG-2D和PNG-3D(RT)相比，这些复合材料的最大输出功率分别提高了13.4%和11.3%。这些结果表明，与应用了没有任何交联效应的PEDOT:PSS的PNG-1D(60)相比，分别提高了27.4%和7.8%。由于其对1 μF电容器的灵敏度和优异的充电电压性能，这些PNG作为电源显示出很高的潜力。
