Smart nanopaper based on cellulose nanofibers with hybrid PEDOT:PSS/polypyrrole for energy storage devices. (1st June 2017)

• Record Type: Journal Article
• Authors: Lay, Makara; Pèlach, M. Àngels; Pellicer, Neus; Tarrés, Joaquim A.; Bun, Kim Ngun; Vilaseca, Fabiola
• Is Part Of: Carbohydrate polymers. Volume 165(2017)
• Page Start: 86
• Page End: 95
• Publication Date: 2017-06-01
• Subjects: Cellulose nanofibers -- PEDOT:PSS -- Polypyrrole -- Electrical conductivity -- Specific capacitance -- Flexible electronics; Polysaccharides -- Periodicals; Polysaccharides -- Periodicals; Polysaccharides -- Périodiques; Electronic journals; 547.78
• DOI: 10.1016/j.carbpol.2017.02.043
• Languages: English
• ISSNs: 0144-8617

Abstract

Graphical abstract: Highlights: Homogeneous coting of PEDOT:PSS on cellulose nanofibers. Cooperation between PEDOT:PSS and PPy improve thermal and electrical properties. Cellulose nanopaper of 10.55 S cm −1 conductivity and 315 F g −1 specific capacitance. Smart conductive cellulose nanopaper for energy storage devices. Abstract: In the current work, flexible, lightweight, and strong conductive nanopapers based on cellulose nanofibers (CNFs) with poly(3, 4-ethylenedioxythiophene):polystyrene sulfonate (PEDOT:PSS) and/or polypyrrole (PPy) were prepared by following a mixing and in situ chemical polymerization method. A successful homogeneous coating of PEDOT:PSS on cellulose nanofibers occurred by means hydrogen-bonding interactions between the hydroxyl functionalized CNF and the electronically charged PEDOT:PSS, as shown by FTIR spectra. The electrical conductivity and the specific capacitance of CNF-PEDOT:PSS nanopapers were 2.58 S cm −1 and 6.21 F g −1, respectively. Further coating of PPy produced a substantial improvement on the electrical conductivity (10.55 S cm −1 ) and the specific capacitance (315.5 F g −1 ) of the resulting CNF-PEDOT:PSS-PPy nanopaper. A synergistic phenomenon between both conductive polymers supported the high electrical conductivity and specific capacitance of the ternary formulation. Moreover, CNF-PEDOT:PSS-PPy nanopaper showed higher mechanical properties and it was more flexible than the nanopaper containing only polypyrrole conducting polymer (CNF-PPy). It is concluded that the good mechanical, electrical and electrochemical properties of the ternary formulation can apply for smart nanopaper in flexible electronics and energy storage devices.