title: Perovskite SrCo0.9 Nb0.1 O3-δ as an Anion-Intercalated Electrode Material for Supercapacitors with Ultrahigh Volumetric Energy Density.
abstract: We have synthesized and characterized perovskite-type SrCo0.9 Nb0.1 O3-δ (SCN) as a novel anion-intercalated electrode material for supercapacitors in an aqueous KOH electrolyte, demonstrating a very high volumetric capacitance of about 2034.6 F cm(-3) (and gravimetric capacitance of ca. 773.6 F g(-1) ) at a current density of 0.5 A g(-1) while maintaining excellent cycling stability with a capacity retention of 95.7 % after 3000 cycles. When coupled with an activated carbon (AC) electrode, the SCN/AC asymmetric supercapacitor delivered a specific energy density as high as 37.6 Wh kg(-1) with robust long-term stability.
authors.affiliation: State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemistry & Chemical Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University, No. 5 Xin Mofan Road, Nanjing, 210009, P.R. China.
authors.forename: Liang
authors.initials: L
authors.lastname: Zhu
authors.affiliation: Department of Chemical Engineering, Curtin University, Perth, Western Australia, 6845, Australia.
authors.forename: Yu
authors.initials: Y
authors.lastname: Liu
authors.affiliation: Department of Chemical Engineering, Curtin University, Perth, Western Australia, 6845, Australia.
authors.forename: Chao
authors.initials: C
authors.lastname: Su
authors.affiliation: State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemistry & Chemical Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University, No. 5 Xin Mofan Road, Nanjing, 210009, P.R. China.
authors.forename: Wei
authors.initials: W
authors.lastname: Zhou
authors.affiliation: Center for Innovative Fuel Cell and Battery Technologies, School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA, 30332-0245, USA. meilin.liu@mse.gatech.edu.
authors.forename: Meilin
authors.initials: M
authors.lastname: Liu
authors.affiliation: Department of Chemical Engineering, Curtin University, Perth, Western Australia, 6845, Australia. shaozp@njtech.edu.cn.|State Key Laboratory of Materials-Oriented Chemical Engineering, College of Energy, Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University, No. 5 Xin Mofan Road, Nanjing, 210009, P.R. China. shaozp@njtech.edu.cn.
authors.forename: Zongping
authors.initials: Z
authors.lastname: Shao
keywords: electrodes; energy storage; oxygen vacancy; perovskite oxides; supercapacitors