Smart nanopaper based on cellulose nanofibers with hybrid PEDOT:PSS/polypyrrole for energy storage devices

Makara Lay; M Àngels Pèlach; Neus Pellicer; Joaquim A Tarrés; Kim Ngun Bun; Fabiola Vilaseca

doi:10.1016/j.carbpol.2017.02.043

Smart nanopaper based on cellulose nanofibers with hybrid PEDOT:PSS/polypyrrole for energy storage devices

Carbohydr Polym. 2017 Jun 1:165:86-95. doi: 10.1016/j.carbpol.2017.02.043. Epub 2017 Feb 14.

Authors

Makara Lay¹, M Àngels Pèlach², Neus Pellicer², Joaquim A Tarrés², Kim Ngun Bun³, Fabiola Vilaseca⁴

Affiliations

¹ 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.
² LEPAMAP Group, Dept. of Chemical Engineering, Agricultural and Food Technology, Universitat de Girona, C/Maria Aurèlia Capmany 61, 17071 Girona, Spain.
³ Dept. of Geo-resources and Geotechnical Engineering, Institute of Technology of Cambodia, PO Box 86, Russian conf. Blvd., Phnom Penh, Cambodia.
⁴ 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.

PMID: 28363579
DOI: 10.1016/j.carbpol.2017.02.043

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^-1 and 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.

Keywords: Cellulose nanofibers; Electrical conductivity; Flexible electronics; PEDOT:PSS; Polypyrrole; Specific capacitance.