Porous Fe2O3 nanotubes as advanced anode for high performance lithium ion batteries
| Autor: | Hongxun Yang, Sun Mingchen, Mengfei Sun, Shengnan Sun, Song Wanghua, Yu Nie |
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| Rok vydání: | 2017 |
| Předmět: |
Materials science
Process Chemistry and Technology chemistry.chemical_element Nanotechnology 02 engineering and technology Thermal treatment Electrolyte 010402 general chemistry 021001 nanoscience & nanotechnology Electrochemistry 01 natural sciences 0104 chemical sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials Anode Ion chemistry Chemical engineering Materials Chemistry Ceramics and Composites Lithium 0210 nano-technology Porosity Faraday efficiency |
| Zdroj: | Ceramics International. 43:363-367 |
| ISSN: | 0272-8842 |
| DOI: | 10.1016/j.ceramint.2016.09.166 |
| Popis: | One-dimensional porous Fe 2 O 3 nanotubes with 2 µm length, 220 nm outer diameter and 65 nm wall thickness were firstly synthesized via a low temperature hydrothermal method followed by thermal treatment. As advanced anode for lithium ion batteries, porous Fe 2 O 3 nanotubes exhibit obviously enhanced electrochemical properties in terms of lithium storage capacity (1050.1 mA h g −1 at 100 mA g −1 rate), initial coulombic efficiency (78.4%), cycle performances (90.6% capacity retention at 50th cycle), and rate capability (613.7 mA h g −1 at 1000 mA g −1 rate). This enhancement could be attributed to the one-dimensional nanostructure of porous Fe 2 O 3 nanotubes which could increase contact area between electrolyte and active materials, shorten migration path for Li + ions and electrons, and accommodate the volume variations via additional void space during cycling. |
| Databáze: | OpenAIRE |
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