Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5431600 | Carbon | 2017 | 7 Pages |
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 1.019Â FÂ cmâ2 and 158.08Â mFÂ cmâ2, respectively. A supernal volume energy density of 49.5Â mWh cmâ3 was obtained when the voltage window increased to 1.5Â 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