3D printed graphene aerogels using conductive nanofibrillar network formulation

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dc.contributor.authorTran, TSen_AU
dc.contributor.authorBalu, Ren_AU
dc.contributor.authorMata, JPen_AU
dc.contributor.authorDutta, NKen_AU
dc.contributor.authorChoudhury, NRen_AU
dc.date.accessioned2024-01-11T23:52:21Zen_AU
dc.date.available2024-01-11T23:52:21Zen_AU
dc.date.issued2023-06en_AU
dc.date.statistics2023-12-01en_AU
dc.description.abstractDespite recent progress in 3D printing of graphene, formulation of aqueous 3D printable graphene inks with desired rheological properties for direct ink writing (DIW) of multifunctional graphene macrostructures remains a major challenge. In this work, we develop a novel 3D printable pristine graphene ink in aqueous phase using conductive nanofibrillar network formulation by controlling the interfacial interactions between graphene and PEDOT:PSS nanofibrils. The formulated inks, tailored for energy applications, provide excellent 3D printability for fabricating multilayer 3D structures (up to 30 layers) with spanning features and high aspect ratio. The 3D printed aerogels, comprising interconnected networks of graphene flakes and PEDOT:PSS nanofibrils, exhibit excellent electrical conductivity as high as ∼630 S m − 1 and can be converted into conductive hydrogels via swelling in water/electrolyte. The formulated graphene inks were used for fabricating 3D printed supercapacitor electrodes (power density of 11.3 kW kg−1 and energy density of 7.3 Wh kg−1) with excellent performance and durability. © 2023 The Author(s). Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license.en_AU
dc.description.sponsorshipThe authors acknowledge the School of Graduate Research, RMIT University for supporting the PhD scholarship of T.S. Tran. This work was performed in part at the RMIT Micro Nano Research Facility (MNRF) in the Victorian Node of the Australian National Fabrication Facility (ANFF). Access to the SANS and USANS facility at the ACNS was supported through an ANSTO beamtime award (P9278). The authors acknowledge the facilities and the technical assistance of the RMIT Microscopy & Microanalysis Facility (RMMF) at RMIT University. This work benefited from the use of the SasView application (https://www.sasview.org/), originally developed under NSF award DMR-0520547. The research has been supported by the Australian Research Council (ARC) Industry Transformation research hub for Graphene Enabled Industry Transformation (IH150100003).en_AU
dc.identifier.articlenumber100011en_AU
dc.identifier.citationTran, T. S., Balu, R., Mata, J., Dutta, N. K., & Choudhury, N. R. (2023). 3D printed graphene aerogels using conductive nanofibrillar network formulation. Nano Trends, 2, 100011. doi:10.1016/j.nwnano.2023.100011en_AU
dc.identifier.issn2666-9781en_AU
dc.identifier.journaltitleNano Trendsen_AU
dc.identifier.urihttps://apo.ansto.gov.au/handle/10238/15333en_AU
dc.identifier.volume2en_AU
dc.language.isoenen_AU
dc.publisherElsevieren_AU
dc.relation.urihttps://doi.org/10.1016/j.nwnano.2023.100011en_AU
dc.subjectGrapheneen_AU
dc.subject3D printingen_AU
dc.subjectEnergy storageen_AU
dc.subjectHydrogelsen_AU
dc.subjectCapacitorsen_AU
dc.subjectNeutron diffractionen_AU
dc.title3D printed graphene aerogels using conductive nanofibrillar network formulationen_AU
dc.typeJournal Articleen_AU
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