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Multifunctional Nanocomposites with High Strength and Capacitance Using 2D MXene and 1D Nanocellulose
KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Fibre- and Polymer Technology. KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Centres, Wallenberg Wood Science Center.
Auburn Univ, Dept Mech & Mat Engn, Auburn, AL 36849 USA..ORCID iD: 0000-0002-6284-7560
KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Fibre- and Polymer Technology.
KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Fibre- and Polymer Technology, Fibre Technology. KTH Royal Inst Technol, Dept Fibre & Polymer Technol, Tekn Ringen 56, S-10044 Stockholm, Sweden..
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2019 (English)In: Advanced Materials, ISSN 0935-9648, E-ISSN 1521-4095, article id 1902977Article in journal (Refereed) Published
Abstract [en]

The family of two-dimensional (2D) metal carbides and nitrides, known as MXenes, are among the most promising electrode materials for supercapacitors thanks to their high metal-like electrical conductivity and surface-functional-group-enabled pseudocapacitance. A major drawback of these materials is, however, the low mechanical strength, which prevents their applications in lightweight, flexible electronics. A strategy of assembling freestanding and mechanically robust MXene (Ti3C2Tx) nanocomposites with one-dimensional (1D) cellulose nanofibrils (CNFs) from their stable colloidal dispersions is reported. The high aspect ratio of CNF (width of approximate to 3.5 nm and length reaching tens of micrometers) and their special interactions with MXene enable nanocomposites with high mechanical strength without sacrificing electrochemical performance. CNF loading up to 20%, for example, shows a remarkably high mechanical strength of 341 MPa (an order of magnitude higher than pristine MXene films of 29 MPa) while still maintaining a high capacitance of 298 F g(-1) and a high conductivity of 295 S cm(-1). It is also demonstrated that MXene/CNF hybrid dispersions can be used as inks to print flexible micro-supercapacitors with precise dimensions. This work paves the way for fabrication of robust multifunctional MXene nanocomposites for printed and lightweight structural devices.

Place, publisher, year, edition, pages
WILEY-V C H VERLAG GMBH , 2019. article id 1902977
Keywords [en]
2D titanium carbide, MXenes, nanocellulose, nanocomposites, supercapacitors
National Category
Polymer Chemistry
Identifiers
URN: urn:nbn:se:kth:diva-257809DOI: 10.1002/adma.201902977ISI: 000482085200001PubMedID: 31408235Scopus ID: 2-s2.0-85070724702OAI: oai:DiVA.org:kth-257809DiVA, id: diva2:1350845
Note

QC 20190912

Available from: 2019-09-12 Created: 2019-09-12 Last updated: 2019-09-12Bibliographically approved

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Tian, WeiqianReid, Michael S.Wang, ZhenOuyang, LiangqiErlandsson, JohanPettersson, TorbjörnWågberg, LarsHamedi, Mahiar

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Tian, WeiqianVahidMohammadi, ArminReid, Michael S.Wang, ZhenOuyang, LiangqiErlandsson, JohanPettersson, TorbjörnWågberg, LarsHamedi, Mahiar
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Fibre- and Polymer TechnologyWallenberg Wood Science CenterFibre Technology
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