High-performance TEMPO-oxidised cellulose nanofibre/PEDOT:PSS/ionic liquid gel actuators
High-performance TEMPO-oxidised cellulose nanofibre/PEDOT:PSS/ionic liquid gel actuators
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高性能 TEMPO 氧化纤维素纳米纤维/PEDOT:PSS/离子液体凝胶执行器
DOI：
10.1016/j.snb.2021.130105
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发表时间：
2021
期刊：
影响因子：
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通讯作者：
Terasawa Naohiro
中科院分区：
文献类型：
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作者：
Takatoshi Ito;Fukashi Matsumoto;Toshiyuki Iwai;Kazuyuki Moriwaki;Yuko Takao;Takumi Mizuno;Toshinobu Ohno;Terasawa Naohiro;Terasawa Naohiro
在作者之前的研究中，由于电极和电解质层之间的粘附性差，无法制造基于纤维素纳米纤维/聚（3,4-乙烯二氧噻吩）：聚（4-苯乙烯磺酸盐）/离子液体（CNF/PEDOT:PSS/IL）凝胶电极和CNF/IL凝胶电解质的致动器。然而，在本研究中，由于电极和电解质层之间良好的粘附性，使用2,2,6,6-四甲基哌啶-1-氧（TEMPO）氧化纤维素纳米纤维(TOCN)/PEDOT:PSS/IL凝胶电极和TOCN/IL或聚偏氟乙烯-共六氟丙烯（PVdF(HFP)/IL）凝胶电解质开发了一系列新的致动器。TOCN/PEDOT:PSS/IL凝胶电极执行器具有较高的应变性能。这些致动器主要通过静电双层电容器机构工作，氧化还原电容器机构的贡献相对较小。TOCN/PEDOT:PSS/IL凝胶电极驱动器表现出频率相关的位移响应，考虑凝胶电极/电解质联合电阻的双层充电动力学模型成功地模拟了实验结果。具有优异导电性的电极（PVdF(HFP)/IL电解质）和具有优异导电性和离子导电性的电极/电解质（TOCN/IL凝胶电解质）的开发将有助于优化TOCN/PEDOT:PSS/IL基聚合物致动器的性能。这些柔性薄膜将适用于开发用于可穿戴和透明电子和能量转换设备的执行器材料。
In a previous study that the authors have conducted, actuators based on cellulose nanofibre/poly(3,4-ethylenedioxythiophene):poly(4-styrenesulfonate)/ionic liquid (CNF/PEDOT:PSS/IL) gel electrodes and CNF/IL gel electrolytes could not be fabricated due to poor adhesion between the electrode and electrolyte layers. However, in this study, a series of novel actuators were developed using a 2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO)-oxidised cellulose nanofibre (TOCN)/PEDOT:PSS/IL gel electrode with a TOCN/IL or poly(vinylidene fluoride-co-hexafluoropropylene) (PVdF(HFP)/IL) gel electrolyte due to good adhesion between the electrode and electrolyte layers. The TOCN/PEDOT:PSS/IL gel electrode actuators exhibited high strain performance. These actuators mainly operated via an electrostatic double-layer capacitor mechanism, with a redox capacitor mechanism making a relatively small contribution. The TOCN/PEDOT:PSS/IL gel electrode actuators showed frequency-dependent displacement responses, and a model of double-layer charging kinetics considering the combined resistance of the gel electrode/electrolyte successfully simulated the experimental results. The development of electrodes with excellent electrical conductivity (PVdF(HFP)/IL electrolytes) and electrodes/electrolytes with excellent electrical and ionic conductivities (TOCN/IL gel electrolytes) will facilitate the optimisation of the performance of TOCN/PEDOT:PSS/IL-based polymer actuators. These flexible films will be applicable for the development of actuator materials for use in wearable and transparent electronic and energy conversion devices.