Hierarchical nanorod-based TiO2 microspheres for superior electrochemical energy storage
| Autor: | Dai-Viet N. Vo, Thi Hang Le, Quang Duc Truong, Luong Xuan Dien, Thanh Son Le |
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| Rok vydání: | 2018 |
| Předmět: |
Coalescence (physics)
Chemistry General Chemical Engineering Titanic acid Crystal growth 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Analytical Chemistry Anode chemistry.chemical_compound Chemical engineering Rutile Electrode Electrochemistry Particle Nanorod 0210 nano-technology |
| Zdroj: | Journal of Electroanalytical Chemistry. 820:32-40 |
| ISSN: | 1572-6657 |
| DOI: | 10.1016/j.jelechem.2018.04.052 |
| Popis: | Nanorod-based rutile TiO2 microspheres composed of numerous single-crystalline nanorods are successfully fabricated by hydrothermal treatment of peroxo titanic acid in acidic solution. The formation of highly oriented nanorod-based microspheres can be explained in view of crystal growth under the coordination chemistry rule, followed by particle attachment and coalescence. As anodes for Li-ion batteries, the TiO2 microsphere electrodes show enhanced rate performance, deliver a high reversible specific capacity of 180 mAh g−1 at 0.2 C (33.6 mA g−1) and 85.6 mAh g−1 at an extremely high rate of 50 C with an outstanding retention of 47.5%. These remarkable electrode properties are attributed to the efficient electron-transport by the hierarchical conductive pathway which promoted electronic conductivity and the shortened Li+ diffusion length resulting from the ultrafine nanorod structure. |
| Databáze: | OpenAIRE |
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