title: A polyoxovanadate as an advanced electrode material for supercapacitors.
abstract: Polyoxovanadate Na(6)V(10)O(28) is investigated for the first time as electrode material for supercapacitors (SCs). The electrochemical properties of Na(6)V(10)O(28) electrodes are studied in Li(+) -containing organic electrolyte (1 M LiClO(4) in propylene carbonate) by galvanostatic charge/discharge and cyclic voltammetry in a three-electrode configuration. Na(6)V(10)O(28) electrodes exhibit high specific capacitances of up to 354 F g(-1). An asymmetric SC with activated carbon as positive electrode and Na(6)V(10)O(28) as negative electrode is fabricated and exhibits a high energy density of 73 Wh kg(-1) with a power density of 312 W kg(-1), which successfully demonstrates that Na(6)V(10)O(28) is a promising electrode material for high-energy SC applications.
authors.affiliation: TUM CREATE, 1 CREATE Way, #10-02 CREATE Tower, 138602 Singapore (Singapore); School of Materials Science and Engineering, Nanyang Technological University, 639798 Singapore (Singapore).
authors.forename: Han-Yi
authors.initials: HY
authors.lastname: Chen
authors.forename: Grace
authors.initials: G
authors.lastname: Wee
authors.forename: Rami
authors.initials: R
authors.lastname: Al-Oweini
authors.forename: Jochen
authors.initials: J
authors.lastname: Friedl
authors.forename: Kim Soon
authors.initials: KS
authors.lastname: Tan
authors.forename: Yuxi
authors.initials: Y
authors.lastname: Wang
authors.forename: Chui Ling
authors.initials: CL
authors.lastname: Wong
authors.forename: Ulrich
authors.initials: U
authors.lastname: Kortz
authors.forename: Ulrich
authors.initials: U
authors.lastname: Stimming
authors.forename: Madhavi
authors.initials: M
authors.lastname: Srinivasan
keywords: electrochemistry; materials science; polyoxometalates; redox chemistry; supercapacitors