title: Highly Flexible and Planar Supercapacitors Using Graphite Flakes/Polypyrrole in Polymer Lapping Film.
abstract: Flexible supercapacitor electrodes have been fabricated by simple fabrication technique using graphite nanoflakes on polymer lapping films as flexible substrate. An additional thin layer of conducting polymer polypyrrole over the electrode improved the surface conductivity and exhibited excellent electrochemical performances. Such capacitor films showed better energy density and power density with a maximum capacitance value of 37 mF cm(-2) in a half cell configuration using 1 M H2SO4 electrolyte, 23 mF cm(-2) in full cell, and 6 mF cm(-2) as planar cell configuration using poly(vinyl alcohol) (PVA)/phosphoric acid (H3PO4) solid state electrolyte. Moreover, the graphite nanoflakes/polypyrrole over polymer lapping film demonstrated good flexibility and cyclic stability.
authors.affiliation: †Department of Chemistry, Dongguk University-Seoul, Jung-gu, Seoul 100715, South Korea.
authors.forename: C Justin
authors.initials: CJ
authors.lastname: Raj
authors.affiliation: †Department of Chemistry, Dongguk University-Seoul, Jung-gu, Seoul 100715, South Korea.
authors.forename: Byung Chul
authors.initials: BC
authors.lastname: Kim
authors.affiliation: †Department of Chemistry, Dongguk University-Seoul, Jung-gu, Seoul 100715, South Korea.
authors.forename: Won-Je
authors.initials: WJ
authors.lastname: Cho
authors.affiliation: †Department of Chemistry, Dongguk University-Seoul, Jung-gu, Seoul 100715, South Korea.
authors.forename: Won-gil
authors.initials: WG
authors.lastname: Lee
authors.affiliation: ‡Electronics and Telecommunications Research Institute, Synapse Device Creative Research Centre, 218 Gajeong-ro, Yuseong-gu, Daejeon 305-700, South Korea.
authors.forename: Sang-Don
authors.initials: SD
authors.lastname: Jung
authors.affiliation: ‡Electronics and Telecommunications Research Institute, Synapse Device Creative Research Centre, 218 Gajeong-ro, Yuseong-gu, Daejeon 305-700, South Korea.
authors.forename: Yong Hee
authors.initials: YH
authors.lastname: Kim
authors.affiliation: §Department of Ceramic Engineering, Gangneung-Wonju National University, Gangneung 210702, South Korea.
authors.forename: Sang Yeop
authors.initials: SY
authors.lastname: Park
authors.affiliation: †Department of Chemistry, Dongguk University-Seoul, Jung-gu, Seoul 100715, South Korea.
authors.forename: Kook Hyun
authors.initials: KH
authors.lastname: Yu
keywords: conducting polymer; flexible electrode; graphite nanoflakes; impedance spectroscopy; supercapacitor