Ionic Polymer Electroactive Actuators Based on the MF-4SK Ion-Exchange Membrane. Part 2. Ionic Polymer-Graphene Composites

Алексеев, Н. И.; Bagrets, Vladislava S.; Broyko, Anton P.; Korlyakov, A.V.; Лучинин, В. В.; Kalenov, V. E.; Sevost’yanov, E. N.; Khmelnitsky, I. K.

doi:10.1134/s0022476620040150

Cited by 5 publications

(6 citation statements)

References 13 publications

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“…In the paper [ 40 ] which followed [ 39 ], we combined the MF-4SK membrane with GO. The typical size of the GO flakes was 1–2 μm, up to 50% of the substance being in single-layer flakes.…”

Section: Actuators With Graphene Electrodesmentioning

confidence: 99%

“…To reduce the graphene from the GO, two methods of chemical reduction were used: in a water bath and in an oil bath. The details of the technology are presented in [ 40 ].…”

Section: Actuators With Graphene Electrodesmentioning

confidence: 99%

“…The model developed in [ 40 ] successfully interprets a number of experimental facts: the higher roughness of the MF-4SK surface (that provides it with good adhesion to the graphene film), the higher permeable pore size (that provides better actuation characteristic).…”

Section: Actuators With Graphene Electrodesmentioning

confidence: 99%

“…Except the polymer surface roughness, the reduction level of the GO in hydrazine plays a key role in the operation of the actuator, providing the required level of the negative functional groups substitution with amino groups is reached. In [ 40 ], the water bath processing in the most successful experiments was 1 h. Longer processing led to resistance increase although the activation value dispersion in several experiments was wide.…”

Section: Actuators With Graphene Electrodesmentioning

confidence: 99%

“… Frequency dependencies of the actuator displacement amplitude against sinusoidal applied voltage (the amplitude is 1 V) for (1) graphene electrodes on MF-4SK and (2, 3) flexible platinum electrodes researched in [ 39 ]: (2) Pt/Nafion (125-μm thick); (3) Pt/MF-4SK (120-μm thick). Reproduced from [ 40 ] with permission from Springer Nature. Copyright 2020.…”

Section: Figurementioning

confidence: 99%

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Ionic EAP Actuators with Electrodes Based on Carbon Nanomaterials

et al. 2021

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Flexible polymer-based actuators, often also called artificial muscles, are an essential part of biomimetic systems that mimic the movement principles of animal world creatures. The most used electrode material to force the actuator move is an ensemble of noble metal nanoparticles in the electroactive polymer surface. Noble metal electrodes have enough electrical conductivity and elasticity and are not subjected to oxidation. However, high cost of such electrodes and their tendency to cracking dictate the need for searching other materials, primarily carbon ones. The review considers several options for this search. For example, carbon nanotubes and graphene have excellent properties at the level of a single individually taken nanotube or graphene sheet. However, conservation of these properties in structurally imperfect film electrodes requires a separate study. In addition, there are problems of compatibility of such electrodes with the polymers that requires cumbersome technologies, e.g., hot pressing, which complicates the production of the actuator as a whole. The review concerns the technology options of manufacturing actuators and the results obtained on their basis, both including hot pressing and avoiding this procedure. In particular, the required level of the graphene oxide reduction in hydrazine provides sufficient adhesion at rather high electrical conductivity of the graphene film. The ability to simultaneous achieving these properties is a nontrivial result, providing the same level of actuation as with expensive noble metal electrodes. Actuators that additionally require greater lifetime resource should be obtained in other ways. Among them are using the graphdiyne electrodes and laser processing of the graphene electrodes.

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Section: Actuators With Graphene Electrodesmentioning

confidence: 99%

“…To reduce the graphene from the GO, two methods of chemical reduction were used: in a water bath and in an oil bath. The details of the technology are presented in [ 40 ].…”

Section: Actuators With Graphene Electrodesmentioning

confidence: 99%

Section: Actuators With Graphene Electrodesmentioning

confidence: 99%

Section: Actuators With Graphene Electrodesmentioning

confidence: 99%