Capacitance of Flexible Polymer/Graphene Microstructures with High Mechanical Strength

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2022-04-29
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Nasirian, Vahid
Niaraki Asli, Amir Ehsan
Aykar, Saurabh S.
Taghavimehr, Mehrnoosh
Montazami, Reza
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Mary Ann Liebert, Inc.
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Hashemi, Nicole
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Mechanical Engineering
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Mechanical EngineeringBiomedical SciencesAmes National LaboratoryBioeconomy Institute
Abstract
Carbon-modified fibrous structures with high biocompatibility have attracted much attention due to their low cost, sustainability, abundance, and excellent electrical properties. However, some carbon-based materials possess low specific capacitance and electrochemical performance, which pose significant challenges in developing electronic microdevices. In this study, we report a microfluidic-based technique of manufacturing alginate hollow microfibers incorporated by water dispersed modified graphene (bovine serum albumin–graphene). These architectures successfully exhibited enhanced conductivity ∼20 times higher than alginate hollow microfibers without any significant change in the inner dimension of the hollow region (220.0 ± 10.0 μm) compared with pure alginate hollow microfibers. In the presence of graphene, higher specific surface permeability, active ion adsorption sites, and shorter pathways were created. These continuous ion transport networks resulted in improved electrochemical performance. The desired electrochemical properties of the microfibers make alginate/graphene hollow fibers an excellent choice for further use in the development of flexible capacitors with the potential to be used in smart health electronics.
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This is a manuscript of an article is published as Nasirian, Vahid, Amir Ehsan Niaraki-Asli, Saurabh S. Aykar, Mehrnoosh Taghavimehr, Reza Montazami, and Nicole N. Hashemi. "Capacitance of Flexible Polymer/Graphene Microstructures with High Mechanical Strength." 3D Printing and Additive Manufacturing (2022). Final publication is available from Mary Ann Liebert, Inc., publishers. http://dx.doi.org/10.1089/3dp.2022.0026 Copyright 2022 Mary Ann Liebert, Inc. Posted with permission.
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