title: Freestanding nanocellulose-composite fibre reinforced 3D polypyrrole electrodes for energy storage applications.
abstract: It is demonstrated that 3D nanostructured polypyrrole (3D PPy) nanocomposites can be reinforced with PPy covered nanocellulose (PPy@nanocellulose) fibres to yield freestanding, mechanically strong and porosity optimised electrodes with large surface areas. Such PPy@nanocellulose reinforced 3D PPy materials can be employed as free-standing paper-like electrodes in symmetric energy storage devices exhibiting cell capacitances of 46 F g(-1), corresponding to specific electrode capacitances of up to ∼185 F g(-1) based on the weight of the electrode, and 5.5 F cm(-2) at a current density of 2 mA cm(-2). After 3000 charge/discharge cycles at 30 mA cm(-2), the reinforced 3D PPy electrode material also showed a cell capacitance corresponding to 92% of that initially obtained. The present findings open up new possibilities for the fabrication of high performance, low-cost and environmentally friendly energy-storage devices based on nanostructured paper-like materials.
authors.affiliation: Department of Chemistry-The Ångström Laboratory, Uppsala University, Box 538, SE-751 21 Uppsala, Sweden. zhaohui.wang@kemi.uu.se leif.nyholm@kemi.uu.se.
authors.forename: Zhaohui
authors.initials: Z
authors.lastname: Wang
authors.forename: Petter
authors.initials: P
authors.lastname: Tammela
authors.forename: Peng
authors.initials: P
authors.lastname: Zhang
authors.forename: Jinxing
authors.initials: J
authors.lastname: Huo
authors.forename: Fredric
authors.initials: F
authors.lastname: Ericson
authors.forename: Maria
authors.initials: M
authors.lastname: Strømme
authors.forename: Leif
authors.initials: L
authors.lastname: Nyholm