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Macro- and mesoporous nanocellulose beads for use in energy storage devices
KTH, Skolan för kemivetenskap (CHE), Fiber- och polymerteknologi, Fiberteknologi.ORCID-id: 0000-0003-1874-2187
Innventia AB.
Acreo Swedish ICT AB.
Vise andre og tillknytning
2016 (engelsk)Inngår i: APPLIED MATERIALS TODAY, ISSN 2352-9407, Vol. 5, s. 246-254Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Chemically cross-linked, wet-stable cellulose nanofibril (CNF) aerogel beads were fabricated using a novel procedure. The procedure facilitated controlled production of millimetre-sized CNF aerogel beads without freeze-drying or critical point drying, while still retaining a highly porous structure with low density. The aerogel beads were mechanically robust in the dry state, supporting loads of 1.3 N at 70% compression, even after being soaked in water and re-dried. Furthermore, they displayed both a good stability in water and a remarkably good shape recovery after wet compression. Owing to the stability in water, the entire surface of the highly porous aerogel beads could be successfully functionalized with polyelectrolytes and carboxyl-functionalized single-wall carbon nanotubes (CF-SWCNTs) using the Layer-by-Layer technique, introducing a significant electrical conductivity (1.6 mS/cm) to the aerogel beads. The functionalized, electrically conducting aerogel beads could carry as much as 2 kA/cm(2) and act as electrodes in a supercapacitor displaying a stabilized charge storage capacity of 9.8 F/g after 50 charging-discharging cycles.

sted, utgiver, år, opplag, sider
Elsevier, 2016. Vol. 5, s. 246-254
Emneord [en]
Supercapacitor, Layer-by-Layer, Size-reduced aerogel, Cellulose nanofibrils
HSV kategori
Identifikatorer
URN: urn:nbn:se:kth:diva-202785DOI: 10.1016/j.apmt.2016.09.008ISI: 000392950300023Scopus ID: 2-s2.0-84995564002OAI: oai:DiVA.org:kth-202785DiVA, id: diva2:1079136
Merknad

QC 20170307

Tilgjengelig fra: 2017-03-07 Laget: 2017-03-07 Sist oppdatert: 2017-03-08bibliografisk kontrollert

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Erlandsson, JohanLarsson, Per A.Wågberg, Lars

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