Article ID Journal Published Year Pages File Type
5431600 Carbon 2017 7 Pages PDF
Abstract

A high-performance, all-solid-state hybrid supercapacitor (HSC) device was assembled successfully. The ZnCo2O4 nanowire array (NA)/carbon nanotube film (CNTF) positive electrode materials and the assembled device possess areal specific capacitances of 1.019 F cm−2 and 158.08 mF cm−2, respectively. A supernal volume energy density of 49.5 mWh cm−3 was obtained when the voltage window increased to 1.5 V. Moreover, the assembled HSC device exhibited good cycling stability with 90.7% initial capacitance retention after 6000 cycles, and the coulombic efficiency remained near 100%.

Graphical abstractThe assembled all-solid-state asymmetric supercapacitor device possess excellent cycle stability and supernal volume energy density.Download high-res image (260KB)Download full-size image

Related Topics
Physical Sciences and Engineering Energy Energy (General)
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