Effect of hexafluoropropylene on the performance of poly(vinylidene fluoride) polymer actuators based on single-walled carbon nanotube–ionic liquid gel

Terasawa, Naohiro; Ono, Norihiro; Hayakawa, Yoshio; Mukai, Ken; Koga, Tomoyuki; Higashi, Nobuyuki; Asaka, Kinji

doi:10.1016/j.snb.2011.07.027

Cited by 67 publications

(56 citation statements)

References 23 publications

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“…Although this is intriguing, it should be noted here that the actuators composed of nanostructured polymer electrolytes still have deficiencies in their properties when compared with the best results obtained with state-of-the-art polymers that possess illdefined morphologies, namely PVdF 41 and PVdF derivatives 42 . In particular, there has been no substantial progress in lowering the operation voltage of the actuators.…”

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confidence: 95%

“…In fact, research on actuators comprising ionic liquids has commonly used a few conventional polymers 25,26 , thus impeding major advances in ionic polymer actuators, which essentially require the optimization of ion transport characteristics and mechanical properties of the polymer layer. In this respect, the use of microphase-separated polymers in actuators has recently been proposed as a promising means to elevate the actuator performance 7,10,[33][34][35][36][37][38][39][40][41] . For instance, Long et al 34,35 , Spontak et al 7,36,37 , Colby et al 38,39 and Watanabe et al 10,40 , have employed self-assembled block copolymers in actuators and improved electromechanical deformation has been reported, compared with that of several conventional polymers lacking organization.…”

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confidence: 99%

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Fast low-voltage electroactive actuators using nanostructured polymer electrolytes

2013

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Electroactive actuators have received enormous interest for a variety of biomimetic technologies ranging from robotics and microsensors to artificial muscles. Major challenges towards practically viable actuators are the achievement of large electromechanical deformation, fast switching response, low operating voltage and durable operation. Here we report a new electroactive actuator composed of self-assembled sulphonated block copolymers and ionic liquids. The new actuator demonstrated improvements in actuation properties over other polymer actuators reported earlier, large generated strain (up to 4%) without any signs of back relaxation. In particular, the millimetre-scale displacements obtained for the actuators, with rapid response (o1 s) at sub-1-V conditions over 13,500 cycles in air, have not been previously reported in the literature. The key to success stems from the evolution of the unique hexagonal structure of the polymer layer with domain size gradients beneath the cathode during actuation, which promotes the bending motion of the actuators.

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confidence: 95%

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confidence: 99%

Fast low-voltage electroactive actuators using nanostructured polymer electrolytes

2013

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“…Moreover, it was usable dimensional (1D) CNT network nanostructure and highly anisotropic electrical conductivity, [ 73,74 ] CNT fi lms or bucky papers have proved to be a good replacement for traditional noble metal electrode. [ 37,38,52 ] Their exceptional mechanical properties also facilitate the fl exibility, electromechanical stability and even high blocking force of the IPMC actuators. Moreover, with porous yet densely packed nanostructure and high-ionaccessible surface area, two dimensional (2D) graphene electrode fi lms have exhibited promising foreground in the IPMC actuators.…”

Section: Reviewmentioning

confidence: 99%

“…[ 37,72 ] The large ions might result in large volume variation and further lead to large displacement, but their moving rate was low, which may also affect the amplitude of bending displacement under high frequency. As a result, using ions with proper sizes, low velocity and weak interaction with the polymer matrix could improve their ionic conductivity.…”

Section: Ion Migration and Charge Storage In Electrode Materialsmentioning

confidence: 99%

Carbon Nanotube and Graphene‐based Bioinspired Electrochemical Actuators

2013

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Bio-inspired actuation materials, also called artificial muscles, have attracted great attention in recent decades for their potential application in intelligent robots, biomedical devices, and micro-electro-mechanical systems. Among them, ionic polymer metal composite (IPMC) actuator has been intensively studied for their impressive high-strain under low voltage stimulation and air-working capability. A typical IPMC actuator is composed of one ion-conductive electrolyte membrane laminated by two electron-conductive metal electrode membranes, which can bend back and forth due to the electrode expansion and contraction induced by ion motion under alternating applied voltage. As its actuation performance is mainly dominated by electrochemical and electromechanical process of the electrode layer, the electrode material and structure become to be more crucial to higher performance. The recent discovery of one dimensional carbon nanotube and two dimensional graphene has created a revolution in functional nanomaterials. Their unique structures render them intriguing electrical and mechanical properties, which makes them ideal flexible electrode materials for IPMC actuators in stead of conventional metal electrodes. Currently although the detailed effect caused by those carbon nanomaterial electrodes is not very clear, the presented outstanding actuation performance gives us tremendous motivation to meet the challenge in understanding the mechanism and thus developing more advanced actuator materials. Therefore, in this review IPMC actuators prepared with different kinds of carbon nanomaterials based electrodes or electrolytes are addressed. Key parameters which may generate important influence on actuation process are discussed in order to shed light on possible future research and application of the novel carbon nanomateials based bio-inspired electrochemical actuators.

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“…28,[31][32][33][34] There are two main types of electrochemical capacitors (ECs): faradaic capacitors (FCs) and electrostatic double-layer capacitors (EDLCs). EDLCs are based on electrode materials that are not electrochemically active, which may include carbon particles.…”

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confidence: 99%

Performance enhancement of PEDOT:poly(4-styrenesulfonate) actuators by using ethylene glycol

Terasawa

Asaka

2018

RSC Adv.

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Effect of hexafluoropropylene on the performance of poly(vinylidene fluoride) polymer actuators based on single-walled carbon nanotube–ionic liquid gel

Cited by 67 publications

References 23 publications

Fast low-voltage electroactive actuators using nanostructured polymer electrolytes

Fast low-voltage electroactive actuators using nanostructured polymer electrolytes

Carbon Nanotube and Graphene‐based Bioinspired Electrochemical Actuators

Performance enhancement of PEDOT:poly(4-styrenesulfonate) actuators by using ethylene glycol

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