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The synthesis of hierarchical ZnCo2O4@MnO2 core–shell nanosheet arrays on Ni foam for high-performance all-solid-state asymmetric supercapacitors
| Content Provider | Semantic Scholar |
|---|---|
| Author | Yu, Deyang Zhang, Ziqing Meng, Ya'nan Teng, Yifei Wu, Yunpeng Zhang, Xinyang Sun, Qiushi Tong, Wenming Zhao, Xudong Liu, Xiaoyang |
| Copyright Year | 2017 |
| Abstract | Hierarchical ZnCo2O4@MnO2 core–shell nanosheet arrays were successfully synthesized on Ni foam via a facile hydrothermal method followed by a calcination process. The fabricated ZnCo2O4@MnO2 electrode exhibited a specific capacitance as high as 2170.00 F g−1 (2.60 F cm−2) at a current density of 3 mA cm−2 in a 1 M KOH solution. Furthermore, an all-solid-state asymmetric supercapacitor (ASC) device fabricated with the as-prepared ZnCo2O4@MnO2 as the positive electrode and activated carbon (AC) as the negative electrode in the PVA/KOH gel electrolyte achieved a high energy density of 29.41 W h kg−1 at a power density of 628.42 W kg−1 and retained 95.3% of its initial capacitance after 3000 cycles at a high current density of 10 mA cm−2. With the smart design and remarkable electrochemical properties, the hierarchical ZnCo2O4@MnO2 core–shell nanosheet arrays on Ni foam demonstrated great potential for further applications in the energy storage field. |
| Starting Page | 597 |
| Ending Page | 604 |
| Page Count | 8 |
| File Format | PDF HTM / HTML |
| DOI | 10.1039/C7QI00706J |
| Volume Number | 5 |
| Alternate Webpage(s) | http://www.rsc.org/suppdata/c7/qi/c7qi00706j/c7qi00706j1.pdf |
| Alternate Webpage(s) | https://doi.org/10.1039/C7QI00706J |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
