Outstanding supercapacitive properties of Mn-doped TiO2 micro/nanostructure porous film prepared by anodization method
| Autor: | Xuewen Ning, Haoran Li, Yang Yang, Jianling Zhao, Xiaofei Yu, Xixin Wang, Mingli Wang |
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| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
Supercapacitor
Multidisciplinary Nanostructure Materials science Anodizing 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Capacitance Article 0104 chemical sciences Affordable and Clean Energy Chemical engineering Specific surface area Electrode 0210 nano-technology Current density Layer (electronics) |
| Zdroj: | Scientific Reports Scientific reports, vol 6, iss 1 |
| ISSN: | 2045-2322 |
| Popis: | Mn-doped TiO2 micro/nanostructure porous film was prepared by anodizing a Ti-Mn alloy. The film annealed at 300 °C yields the highest areal capacitance of 1451.3 mF/cm2 at a current density of 3 mA/cm2 when used as a high-performance supercapacitor electrode. Areal capacitance retention is 63.7% when the current density increases from 3 to 20 mA/cm2 and the capacitance retention is 88.1% after 5,000 cycles. The superior areal capacitance of the porous film is derived from the brush-like metal substrate, which could greatly increase the contact area, improve the charge transport ability at the oxide layer/metal substrate interface and thereby significantly enhance the electrochemical activities toward high performance energy storage. Additionally, the effects of manganese content and specific surface area of the porous film on the supercapacitive performance were also investigated in this work. |
| Databáze: | OpenAIRE |
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