Two-Dimensional Planar Supercapacitor Based on Zinc Oxide/Manganese Oxide Core/Shell Nano-architecture
| Autor: | Sang Yeup Park, Byung Chul Kim, Kook Hyun Yu, C. Justin Raj, Ramu Manikandan, Jun-Ho Song, Murugesan Rajesh, Ju Yong Sim |
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| Rok vydání: | 2017 |
| Předmět: |
Supercapacitor
Fabrication Materials science Nanostructure General Chemical Engineering Inorganic chemistry Oxide 02 engineering and technology Substrate (electronics) 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences chemistry.chemical_compound chemistry Chemical engineering Electrode Electrochemistry Nanorod 0210 nano-technology Layer (electronics) |
| Zdroj: | Electrochimica Acta. 247:949-957 |
| ISSN: | 0013-4686 |
| DOI: | 10.1016/j.electacta.2017.07.009 |
| Popis: | We report the fabrication and performance of zinc oxide core/manganese oxide shell (ZnO/MnO 2 ) three-dimensional nanostructured planar supercapacitor. In this particular fabrication, ZnO nanorods were grown over FTO substrate followed by the successive ionic layer adsorption and reaction (SILAR) deposition of MnO 2 nanostructure on ZnO nanorods. The quality of the ZnO/MnO 2 electrode was optimized by performing various cycles of SILAR deposition of MnO 2 layer over ZnO core. The electrode with 7 cycles of MnO 2 deposition demonstrated maximum electrochemical performance with area capacitance of 14 mF cm −2 and the same condition was utilized for the fabrication of a symmetric planar supercapacitor. This ZnO/MnO 2 3D architecture planar supercapacitor showed maximum area capacitance of 5 mF cm −2 in 1 M Na 2 SO 4 aqueous electrolyte with good energy density of 4.07 × 10 −7 Wh cm −2 and power density of 3.19 mW cm −2 . Moreover, this planar supercapacitor shows an excellent electrochemical performance with comparable long term cyclic stability. |
| Databáze: | OpenAIRE |
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