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Facile synthesis of ZnCo2O4 nanowire cluster arrays on Ni foam for high-performance asymmetric supercapacitors
| Content Provider | Semantic Scholar |
|---|---|
| Author | Guan, Bingkun Guo, Di Long Hu, Lingling Zhang, Guanhua Ren, Weiji Li, Jidong Li, Qiuhong |
| Copyright Year | 2014 |
| Abstract | ZnCo2O4 nanowire cluster arrays (NWCAs) were directly grown on Ni foam via a facile hydrothermal method. The resulting products were analyzed by using X-ray diffraction spectroscopy (XRD), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). The ZnCo2O4 NWCAs on Ni foam were directly used as integrated electrodes for supercapacitors and exhibited a high specific capacitance of 4.05 F cm−2 at 20 mA cm−2 (1620 F g−1 at 8 A g−1) in 3 M KOH aqueous solution, and an excellent cycling ability at various current densities up to 100 mA cm−2 (40 A g−1); 90% of the initial capacitance remained after 6000 cycles. Moreover, the asymmetric supercapacitor had a high energy density of 41.00 W h kg−1 at a power density of 384 W kg−1 and 16.63 W h kg−1 at a high power density of 2561 W kg−1. Such excellent rate properties and superior cycling life suggest that ZnCo2O4 NWCAs can not only be applied in high energy density fields, but also used in high power density applications. |
| Starting Page | 16116 |
| Ending Page | 16123 |
| Page Count | 8 |
| File Format | PDF HTM / HTML |
| DOI | 10.1039/C4TA02378A |
| Volume Number | 2 |
| Alternate Webpage(s) | https://pubs.rsc.org/en/content/getauthorversionpdf/C4TA02378A |
| Alternate Webpage(s) | https://doi.org/10.1039/C4TA02378A |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
