Functionalized Nanocellulose/Multiwalled Carbon Nanotube Composites for Electrochemical Applications

Vasuki Durairaj; Panpan Li; Touko Liljeström; Niklas Wester; Jarkko Etula; Ilona Leppänen; Yanling Ge; Katri S. Kontturi; Tekla Tammelin; Tomi Laurila; Jari Koskinen

doi:10.1021/acsanm.1c00774

Functionalized Nanocellulose/Multiwalled Carbon Nanotube Composites for Electrochemical Applications

Vasuki Durairaj (Corresponding Author), Panpan Li, Touko Liljeström, Niklas Wester, Jarkko Etula, Ilona Leppänen, Yanling Ge, Katri S. Kontturi, Tekla Tammelin, Tomi Laurila, Jari Koskinen

Aalto University

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Abstract

Four different types of crystalline and fibrillar nanocellulosic materials with different functional groups (sulfate, carboxylate, amino-silane) are produced and used to disperse commercial multiwalled carbon nanotubes (MWCNT). Aqueous nanocellulose/MWCNT dispersions are drop-cast on tetrahedral amorphous carbon (ta-C) substrates to obtain highly stable composite electrodes. Their electrochemical properties are studied using cyclic voltammetry (CV) measurements with Ru(NH3)62+/3+, IrCl62-/3- redox probes, in electrolytes of different ionic strengths. All studied nanocellulose/MWCNT composites show excellent stability over a wide potential range (-0.6 to +1 V) in different electrolytes. Highly anionic and more porous fibrillar nanocellulosic composites indicate strong electrostatic and physical enrichment of cationic Ru(NH3)62+/3+ in lower-ionic-strength electrolytes, while lesser anionic and denser crystalline nanocellulosic composites show no such effects. This study provides essential insights into developing tailorable nanocellulose/carbon nanomaterial hybrid platforms for different electrochemical applications, by altering the constituent nanocellulosic material properties.

Original language	English
Pages (from-to)	5842-5853
Number of pages	12
Journal	ACS Applied Nano Materials
Volume	4
Issue number	6
DOIs	https://doi.org/10.1021/acsanm.1c00774
Publication status	Published - 25 Jun 2021
MoE publication type	A1 Journal article-refereed

Keywords

carbon nanotubes
composites
cyclic voltammetry
electrochemical
nanocellulose
outer-sphere redox probes

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10.1021/acsanm.1c00774Licence: CC BY

acsanm.1c00774Final published version, 5.45 MBLicence: CC BY

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@article{ef098259f1c747e9a4f7e45be3cac2fa,

title = "Functionalized Nanocellulose/Multiwalled Carbon Nanotube Composites for Electrochemical Applications",

abstract = "Four different types of crystalline and fibrillar nanocellulosic materials with different functional groups (sulfate, carboxylate, amino-silane) are produced and used to disperse commercial multiwalled carbon nanotubes (MWCNT). Aqueous nanocellulose/MWCNT dispersions are drop-cast on tetrahedral amorphous carbon (ta-C) substrates to obtain highly stable composite electrodes. Their electrochemical properties are studied using cyclic voltammetry (CV) measurements with Ru(NH3)62+/3+, IrCl62-/3- redox probes, in electrolytes of different ionic strengths. All studied nanocellulose/MWCNT composites show excellent stability over a wide potential range (-0.6 to +1 V) in different electrolytes. Highly anionic and more porous fibrillar nanocellulosic composites indicate strong electrostatic and physical enrichment of cationic Ru(NH3)62+/3+ in lower-ionic-strength electrolytes, while lesser anionic and denser crystalline nanocellulosic composites show no such effects. This study provides essential insights into developing tailorable nanocellulose/carbon nanomaterial hybrid platforms for different electrochemical applications, by altering the constituent nanocellulosic material properties. ",

keywords = "carbon nanotubes, composites, cyclic voltammetry, electrochemical, nanocellulose, outer-sphere redox probes",

author = "Vasuki Durairaj and Panpan Li and Touko Liljestr{\"o}m and Niklas Wester and Jarkko Etula and Ilona Lepp{\"a}nen and Yanling Ge and Kontturi, {Katri S.} and Tekla Tammelin and Tomi Laurila and Jari Koskinen",

note = "Funding Information: This work was a part of the Academy of Finland?s Flagship Programme under projects nos. 318890 and 318891 (Competence Center for Materials Bioeconomy, FinnCERES). The authors acknowledge the provision of facilities by Aalto University Bioeconomy and OtaNano?Nanomicroscopy Center (Aalto-NMC) and RawMatters research infrastructure (RAMI). Publisher Copyright: {\textcopyright} ",

year = "2021",

month = jun,

day = "25",

doi = "10.1021/acsanm.1c00774",

language = "English",

volume = "4",

pages = "5842--5853",

journal = "ACS Applied Nano Materials",

issn = "2574-0970",

publisher = "American Chemical Society ACS",

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TY - JOUR

T1 - Functionalized Nanocellulose/Multiwalled Carbon Nanotube Composites for Electrochemical Applications

AU - Durairaj, Vasuki

AU - Li, Panpan

AU - Liljeström, Touko

AU - Wester, Niklas

AU - Etula, Jarkko

AU - Leppänen, Ilona

AU - Ge, Yanling

AU - Kontturi, Katri S.

AU - Tammelin, Tekla

AU - Laurila, Tomi

AU - Koskinen, Jari

N1 - Funding Information: This work was a part of the Academy of Finland?s Flagship Programme under projects nos. 318890 and 318891 (Competence Center for Materials Bioeconomy, FinnCERES). The authors acknowledge the provision of facilities by Aalto University Bioeconomy and OtaNano?Nanomicroscopy Center (Aalto-NMC) and RawMatters research infrastructure (RAMI). Publisher Copyright: ©

PY - 2021/6/25

Y1 - 2021/6/25

N2 - Four different types of crystalline and fibrillar nanocellulosic materials with different functional groups (sulfate, carboxylate, amino-silane) are produced and used to disperse commercial multiwalled carbon nanotubes (MWCNT). Aqueous nanocellulose/MWCNT dispersions are drop-cast on tetrahedral amorphous carbon (ta-C) substrates to obtain highly stable composite electrodes. Their electrochemical properties are studied using cyclic voltammetry (CV) measurements with Ru(NH3)62+/3+, IrCl62-/3- redox probes, in electrolytes of different ionic strengths. All studied nanocellulose/MWCNT composites show excellent stability over a wide potential range (-0.6 to +1 V) in different electrolytes. Highly anionic and more porous fibrillar nanocellulosic composites indicate strong electrostatic and physical enrichment of cationic Ru(NH3)62+/3+ in lower-ionic-strength electrolytes, while lesser anionic and denser crystalline nanocellulosic composites show no such effects. This study provides essential insights into developing tailorable nanocellulose/carbon nanomaterial hybrid platforms for different electrochemical applications, by altering the constituent nanocellulosic material properties.

AB - Four different types of crystalline and fibrillar nanocellulosic materials with different functional groups (sulfate, carboxylate, amino-silane) are produced and used to disperse commercial multiwalled carbon nanotubes (MWCNT). Aqueous nanocellulose/MWCNT dispersions are drop-cast on tetrahedral amorphous carbon (ta-C) substrates to obtain highly stable composite electrodes. Their electrochemical properties are studied using cyclic voltammetry (CV) measurements with Ru(NH3)62+/3+, IrCl62-/3- redox probes, in electrolytes of different ionic strengths. All studied nanocellulose/MWCNT composites show excellent stability over a wide potential range (-0.6 to +1 V) in different electrolytes. Highly anionic and more porous fibrillar nanocellulosic composites indicate strong electrostatic and physical enrichment of cationic Ru(NH3)62+/3+ in lower-ionic-strength electrolytes, while lesser anionic and denser crystalline nanocellulosic composites show no such effects. This study provides essential insights into developing tailorable nanocellulose/carbon nanomaterial hybrid platforms for different electrochemical applications, by altering the constituent nanocellulosic material properties.

KW - carbon nanotubes

KW - composites

KW - cyclic voltammetry

KW - electrochemical

KW - nanocellulose

KW - outer-sphere redox probes

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U2 - 10.1021/acsanm.1c00774

DO - 10.1021/acsanm.1c00774

M3 - Article

AN - SCOPUS:85110886099

SN - 2574-0970

VL - 4

SP - 5842

EP - 5853

JO - ACS Applied Nano Materials

JF - ACS Applied Nano Materials

IS - 6

ER -

Functionalized Nanocellulose/Multiwalled Carbon Nanotube Composites for Electrochemical Applications

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Keywords

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