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

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

11 Citations (Scopus)
115 Downloads (Pure)


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 languageEnglish
Pages (from-to)5842-5853
Number of pages12
JournalACS Applied Nano Materials
Issue number6
Early online date14 Jun 2021
Publication statusPublished - 25 Jun 2021
MoE publication typeA1 Journal article-refereed


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


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