title: Smart nanopaper based on cellulose nanofibers with hybrid PEDOT:PSS/polypyrrole 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 2.58Scm-1and 6.21Fg-1, respectively. Further coating of PPy produced a substantial improvement on the electrical conductivity (10.55Scm-1) and the specific capacitance (315.5Fg-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.
authors.affiliation: LEPAMAP Group, Dept. of Chemical Engineering, Agricultural and Food Technology, Universitat de Girona, C/Maria Aurèlia Capmany 61, 17071 Girona, Spain; Dept. of Geo-resources and Geotechnical Engineering, Institute of Technology of Cambodia, PO Box 86, Russian conf. Blvd., Phnom Penh, Cambodia.
authors.forename: Makara
authors.initials: M
authors.lastname: Lay
authors.affiliation: LEPAMAP Group, Dept. of Chemical Engineering, Agricultural and Food Technology, Universitat de Girona, C/Maria Aurèlia Capmany 61, 17071 Girona, Spain.
authors.forename: M Àngels
authors.initials: MÀ
authors.lastname: Pèlach
authors.affiliation: LEPAMAP Group, Dept. of Chemical Engineering, Agricultural and Food Technology, Universitat de Girona, C/Maria Aurèlia Capmany 61, 17071 Girona, Spain.
authors.forename: Neus
authors.initials: N
authors.lastname: Pellicer
authors.affiliation: LEPAMAP Group, Dept. of Chemical Engineering, Agricultural and Food Technology, Universitat de Girona, C/Maria Aurèlia Capmany 61, 17071 Girona, Spain.
authors.forename: Joaquim A
authors.initials: JA
authors.lastname: Tarrés
authors.affiliation: Dept. of Geo-resources and Geotechnical Engineering, Institute of Technology of Cambodia, PO Box 86, Russian conf. Blvd., Phnom Penh, Cambodia.
authors.forename: Kim Ngun
authors.initials: KN
authors.lastname: Bun
authors.affiliation: LEPAMAP Group, Dept. of Chemical Engineering, Agricultural and Food Technology, Universitat de Girona, C/Maria Aurèlia Capmany 61, 17071 Girona, Spain. Electronic address: fabiola.vilaseca@udg.edu.
authors.forename: Fabiola
authors.initials: F
authors.lastname: Vilaseca
keywords: Cellulose nanofibers; Electrical conductivity; Flexible electronics; PEDOT:PSS; Polypyrrole; Specific capacitance