title: High-Temperature All Solid-State Microsupercapacitors based on SiC Nanowire Electrode and YSZ Electrolyte.
abstract: We demonstrate a symmetric supercapacitor by using yttria-stabilized zirconia (YSZ) as the electrolyte and silicon carbide nanowires (SiC NWs) as the electrode. The stacked symmetric SiC NWs/YSZ/SiC NWs supercapacitors exhibit excellent thermal stability and high areal capacitance at temperatures above 300 °C. The supercapacitor functions well at a record high temperature of 450 °C, yielding an areal capacitance of 92 μF cm(-2) at a voltage scan rate of 100 mV s(-1). At this temperature, it is also capable of withstanding current densities up to 50 μA cm(-2), yielding a maximum areal power density of 100 μW cm(-2). Good cycling stability is demonstrated with a capacitance retention of over 60% after 10,000 cycles at the operation temperature of 450 °C and a scan rate of 200 mV s(-1).
authors.affiliation: Department of Chemical and Biomolecular Engineering, University of California , Berkeley, California 94720, United States.|Department of Chemical Engineering, National Tsing-Hua University , Hsinchu 30013, Taiwan.
authors.forename: Chun-Hui
authors.initials: CH
authors.lastname: Chang
authors.affiliation: Department of Chemical and Biomolecular Engineering, University of California , Berkeley, California 94720, United States.
authors.forename: Ben
authors.initials: B
authors.lastname: Hsia
authors.affiliation: Department of Chemical and Biomolecular Engineering, University of California , Berkeley, California 94720, United States.
authors.forename: John P
authors.initials: JP
authors.lastname: Alper
authors.affiliation: Department of Chemical and Biomolecular Engineering, University of California , Berkeley, California 94720, United States.|Advanced Institute of Materials Science, Changchun University of Technology , Changchun 130012, China.
authors.forename: Shuang
authors.initials: S
authors.lastname: Wang
authors.affiliation: Department of Chemical and Biomolecular Engineering, University of California , Berkeley, California 94720, United States.
authors.forename: Lunet E
authors.initials: LE
authors.lastname: Luna
authors.affiliation: Department of Chemical and Biomolecular Engineering, University of California , Berkeley, California 94720, United States.
authors.forename: Carlo
authors.initials: C
authors.lastname: Carraro
authors.affiliation: Department of Chemical Engineering, National Tsing-Hua University , Hsinchu 30013, Taiwan.
authors.forename: Shih-Yuan
authors.initials: SY
authors.lastname: Lu
authors.affiliation: Department of Chemical and Biomolecular Engineering, University of California , Berkeley, California 94720, United States.
authors.forename: Roya
authors.initials: R
authors.lastname: Maboudian
keywords: SiC; YSZ; high temperature; solid-state; supercapacitors