A critical SiOxlayer on Si porous structures to construct highly-reversible anode materials for lithium-ion batteries
| Autor: | Deren Yang, Zhang Yaguang, Ning Du, Yangfan Lin, Yifan Chen, Hui Zhang |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Materials science
Annealing (metallurgy) Metals and Alloys Nanotechnology 02 engineering and technology General Chemistry engineering.material 010402 general chemistry 021001 nanoscience & nanotechnology Electrochemistry 01 natural sciences Catalysis 0104 chemical sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials Anode Ion Acid washing Coating Chemical engineering Materials Chemistry Ceramics and Composites engineering 0210 nano-technology Porosity |
| Zdroj: | Chemical Communications. 53:6101-6104 |
| ISSN: | 1364-548X 1359-7345 |
| Popis: | A novel Si/SiOx porous structure with a SiOx coating layer of varying thicknesses was prepared via a simple annealing and acid washing process. When used as an anode material for lithium-ion batteries, the Si/SiOx porous structure with an ∼9 nm SiOx coating layer demonstrates significantly improved electrochemical performance with a high reversible discharge capacity of over 915 mA h g-1 after 500 long cycles at 1 A g-1. The lithiation mechanism of a SiOx layer of different thicknesses has also been investigated. |
| Databáze: | OpenAIRE |
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