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Rapidly Prepared Nanocellulose Hybrids as Gas Barrier, Flame Retardant, and Energy Storage Materials
KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Fibre- and Polymer Technology, Fibre Technology.ORCID iD: 0000-0003-0519-7917
KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Fibre- and Polymer Technology.ORCID iD: 0000-0002-0534-4633
KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Fibre- and Polymer Technology, Fibre Technology.
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2022 (English)In: ACS Applied Nano Materials, E-ISSN 2574-0970, Vol. 5, no 7, p. 9188-9200Article in journal (Refereed) Published
Abstract [en]

Cellulose nanofibril (CNF) hybrid materials show great promise as sustainable alternatives to oil-based plastics owing to their abundance and renewability. Nonetheless, despite the enormous success achieved in preparing CNF hybrids at the laboratory scale, feasible implementation of these materials remains a major challenge due to the time-consuming and energy-intensive extraction and processing of CNFs. Here, we describe a scalable materials processing platform for rapid preparation (<10 min) of homogeneously distributed functional CNF-gibbsite and CNF-graphite hybrids through a pH-responsive self-assembly mechanism, followed by their application in gas barrier, flame retardancy, and energy storage materials. Incorporation of 5 wt % gibbsite results in strong, transparent, and oxygen barrier CNF-gibbsite hybrid films in 9 min. Increasing the gibbsite content to 20 wt % affords them self-extinguishing properties, while further lowering their dewatering time to 5 min. The strategy described herein also allows for the preparation of freestanding CNF-graphite hybrids (90 wt % graphite) that match the energy storage performance (330 mA h/g at low cycling rates) and processing speed (3 min dewatering) of commercial graphite anodes. Furthermore, these ecofriendly electrodes can be fully recycled, reformed, and reused while maintaining their initial performance. Overall, this versatile concept combines a green outlook with high processing speed and material performance, paving the way toward scalable processing of advanced ecofriendly hybrid materials. 

Place, publisher, year, edition, pages
American Chemical Society (ACS) , 2022. Vol. 5, no 7, p. 9188-9200
Keywords [en]
CNF, functional hybrids, gibbsite, green materials, nanocomposites, self-assembly, Dewatering, Energy storage, Environmental protection, Exfoliation (materials science), Film preparation, Graphene oxide, Graphite, Nanocellulose, Self assembly, Storage (materials), Supercapacitor, Cellulose nanofibrils, Eco-friendly, Energy storage materials, Functional hybrid, Gas barrier, Gibbsites, Hybrids material, Nano-cellulose, Processing speed, Hybrid materials, Energy, Hybrids, Materials, Performance, Processing, Storage, Water Removal
National Category
Materials Chemistry
Identifiers
URN: urn:nbn:se:kth:diva-326185DOI: 10.1021/acsanm.2c01530ISI: 000820597300001Scopus ID: 2-s2.0-85135084223OAI: oai:DiVA.org:kth-326185DiVA, id: diva2:1753948
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QC 20230502

Available from: 2023-05-02 Created: 2023-05-02 Last updated: 2023-05-02Bibliographically approved

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Görür, Yunus CanFrancon, HugoSethi, JatinMontanari, CelineReid, Michael S.Erlandsson, JohanLarsson, Per A.Wågberg, Lars

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Görür, Yunus CanFrancon, HugoSethi, JatinMontanari, CelineReid, Michael S.Erlandsson, JohanLarsson, Per A.Wågberg, Lars
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