High-Temperature All Solid-State Microsupercapacitors based on SiC Nanowire Electrode and YSZ Electrolyte

Chun-Hui Chang; Ben Hsia; John P Alper; Shuang Wang; Lunet E Luna; Carlo Carraro; Shih-Yuan Lu; Roya Maboudian

doi:10.1021/acsami.5b08423

High-Temperature All Solid-State Microsupercapacitors based on SiC Nanowire Electrode and YSZ Electrolyte

ACS Appl Mater Interfaces. 2015 Dec 9;7(48):26658-65. doi: 10.1021/acsami.5b08423. Epub 2015 Nov 20.

Authors

Chun-Hui Chang^{1

2}, Ben Hsia¹, John P Alper¹, Shuang Wang^{1

3}, Lunet E Luna¹, Carlo Carraro¹, Shih-Yuan Lu², Roya Maboudian¹

Affiliations

¹ Department of Chemical and Biomolecular Engineering, University of California , Berkeley, California 94720, United States.
² Department of Chemical Engineering, National Tsing-Hua University , Hsinchu 30013, Taiwan.
³ Advanced Institute of Materials Science, Changchun University of Technology , Changchun 130012, China.

PMID: 26569457
DOI: 10.1021/acsami.5b08423

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).

Keywords: SiC; YSZ; high temperature; solid-state; supercapacitors.

Publication types

Research Support, Non-U.S. Gov't
Research Support, U.S. Gov't, Non-P.H.S.