Electric Conductivity Study of Porous Polyvinyl Alcohol/Graphene/Clay Aerogels: Effect of Compression
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Other documents of the author: Compañ, Vicente; Andrio, Andreu; Escorihuela, Jorge; Velasco, Josua; Porras-Vazquez, Alejandro; Gamez-Perez, Jose
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comunitat-uji-handle2:10234/7034
comunitat-uji-handle3:10234/8619
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Title
Electric Conductivity Study of Porous Polyvinyl Alcohol/Graphene/Clay Aerogels: Effect of CompressionAuthor (s)
Date
2022-10-12Publisher
American Chemical SocietyISSN
2470-1343Bibliographic citation
Compañ, V.; Andrio, A.; Escorihuela, J.; Velasco, J.; Porras-Vazquez, A.; Gamez-Perez, J. Electric Conductivity Study of Porous Polyvinyl Alcohol/Graphene/Clay Aerogels: Effect of Compression. ACS Omega 2022, 7, 42, 37954–37963, DOI: 10.1021/acsomega.2c05123Type
info:eu-repo/semantics/articlePublisher version
https://pubs.acs.org/doi/full/10.1021/acsomega.2c05123Version
info:eu-repo/semantics/publishedVersionSubject
Abstract
In this work, poly(vinyl alcohol) (PVOH)/graphene (GN) oxide/clay aerogels were prepared using montmorillonite (MMT) and kaolinite (KLT) as fillers. This work paves the way for the development of aerogels filled with ... [+]
In this work, poly(vinyl alcohol) (PVOH)/graphene (GN) oxide/clay aerogels were prepared using montmorillonite (MMT) and kaolinite (KLT) as fillers. This work paves the way for the development of aerogels filled with MMT or KLT with high conductivity. The mechanical properties of the polymer/clay aerogels are enhanced by incorporating GN into these systems. These composite materials have an enhanced thermal stability, and the combination of PVOH and GN leads to interconnected channels which favored the conductivity when a clay (MMT or KLT) is added to the mixed PVOH/GN matrix. However, after compressing the samples, the conductivities drastically decreased. These results show that the design of solid MMT/GN and KLT/GN composites as aerogels allows maximizing the space utilization of the electrode volume to achieve unhindered ion transport, which seems contrary to the general design principle of electrode materials where a suitable porous structure is desired, such as in our uncompressed samples. These findings also demonstrate the potential of these materials in electrodes, sensors, batteries, pressure-sensing applications, and supercapacitors. [-]
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ACS omega, 2022, vol. 7, no 42Funder Name
Ministerio de Economía y Competitividad (España)
Project code
MINECO/ICTI2013-2016/AGL2015-63855-C2-2-R
Grant URL
http://dx.doi.org/10.13039/501100003329
Project title or grant
Desarrollo y caracterización de un multicapa biodegradable de alta barrera con propiedades activas y bioactivas para envasado alimentario
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info:eu-repo/semantics/openAccess
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