title: α-Fe2O3 nanotubes-reduced graphene oxide composites as synergistic electrochemical capacitor materials.
abstract: We present a facile approach for the fabrication of a nanocomposite comprising α-Fe(2)O(3) nanotubes (NTs) anchored on reduced graphene oxide (rGO) for electrochemical capacitors (ECs). The hollow tubular structure of the α-Fe(2)O(3) NTs presents a high surface area for reaction, while the incorporation of rGO provides an efficient two-dimensional conductive pathway to allow fast, reversible redox reaction. As a result, the nanocomposite materials exhibit a specific capacitance which is remarkably higher (~7 times) than α-Fe(2)O(3) NTs alone. In addition, the nanocomposites show excellent cycling life and large negative potential window. These findings suggest that such nanocomposites are a promising candidate as negative electrodes in asymmetrical capacitors with neutral electrolytes.
authors.affiliation: NUS Nanoscience and Nanotechnology Initiative, Block S13, 2 Science Drive 3, Singapore 117542.
authors.forename: K K
authors.initials: KK
authors.lastname: Lee
authors.forename: S
authors.initials: S
authors.lastname: Deng
authors.forename: H M
authors.initials: HM
authors.lastname: Fan
authors.forename: S
authors.initials: S
authors.lastname: Mhaisalkar
authors.forename: H R
authors.initials: HR
authors.lastname: Tan
authors.forename: E S
authors.initials: ES
authors.lastname: Tok
authors.forename: K P
authors.initials: KP
authors.lastname: Loh
authors.forename: W S
authors.initials: WS
authors.lastname: Chin
authors.forename: C H
authors.initials: CH
authors.lastname: Sow