Asymmetric pseudo-capacitors based on dendrite-like MnO2 nanostructures
| Autor: | Depeng Zhao, Meizhen Dai, Xiang Wu, Li Xiao, Yue Zhao, Fei Liu |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Supercapacitor
Materials science Nanostructure chemistry.chemical_element 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences 0104 chemical sciences law.invention Capacitor Chemical engineering chemistry law Electrode General Materials Science Dendrite (metal) 0210 nano-technology Carbon Voltage Power density |
| Zdroj: | CrystEngComm. 21:3349-3355 |
| ISSN: | 1466-8033 |
| Popis: | Dendrite-like MnO2 nanostructures grown on carbon cloth are successfully prepared by a facile one-step route. The as-prepared nanoarchitecture delivers a specific capacity of 430 F g−1 at 1 A g−1 and excellent cycling stability. In addition, a quasi-solid-state asymmetric supercapacitor is assembled by using the dendrite-like MnO2 nanostructures as the positive electrode. It shows an energy density of 20.65 W h kg−1 at a power density of 437.30 W kg−1 at a voltage window of 2.45 V. The results reveal that the as-synthesized MnO2 products might be promising electrode materials for electrochemical energy storage. |
| Databáze: | OpenAIRE |
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