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Nanosheet-Assembled $MnO_{2}$-Integrated Electrode Based on the Low-Temperature and Green Chemical Route
| Content Provider | MDPI |
|---|---|
| Author | Wang, Xiaoli Wang, Yin Zhao, Xinyu |
| Copyright Year | 2022 |
| Description | The development of superior electrochemical energy-storage devices designed through a facile, cost-efficient, and green synthesis technique is the key to addressing the intermittent nature of renewable energy sources such as solar and wind energy. In our present work, we design a simple, surfactant-free, and low-temperature chemical strategy to prepare novel integrated, $MnO_{2}$ composite electrodes with two-dimensional (2D) nanosheet film directly supported on three-dimensional (3D) conductive nickel foam. Benefiting from the specific 2D nanosheet architecture to provide a large interfacial contact area and highly conductive metal scaffolds to facilitate fast electron transfer, the novel nanosheet-assembled $MnO_{2}$-integrated electrodes exhibit higher specific capacitance of 446 F $g^{−1}$ at the current density of 1 A $g^{−1}$ compared with nanostructured $MnO_{2}$ and commercial $MnO_{2}$ powder electrodes. More importantly, the as-synthesized devices are able to achieve an outstanding cycling performance of 95% retention after 3000 cycles. The present work, which is based on the low-temperature chemical route to deposit active materials on the conductive substrate, provides new insights into designing a binder-free supercapacitor system to improve the specific capacitance, cycling, and rate performance as next-generation, energy-storage devices. |
| Starting Page | 115 |
| e-ISSN | 20734352 |
| DOI | 10.3390/cryst12010115 |
| Journal | Crystals |
| Issue Number | 1 |
| Volume Number | 12 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2022-01-16 |
| Access Restriction | Open |
| Subject Keyword | Crystals Nanosheets Mno2 Green Chemistry Supercapacitor |
| Content Type | Text |
| Resource Type | Article |
