SEI Layer Formation on Amorphous Si Thin Electrode during Precycling
| Autor: | Joong Kee Lee, Yong Min Lee, Jung-Ki Park, Heung-Taek Shim, Jun Young Lee |
|---|---|
| Rok vydání: | 2007 |
| Předmět: |
Materials science
Renewable Energy Sustainability and the Environment Electrolyte Condensed Matter Physics Precycling Decomposition Surfaces Coatings and Films Electronic Optical and Magnetic Materials Amorphous solid Silanol chemistry.chemical_compound chemistry Chemical engineering Electrode Materials Chemistry Electrochemistry Interphase Layer (electronics) |
| Zdroj: | Journal of The Electrochemical Society. 154:A515 |
| ISSN: | 0013-4651 |
| DOI: | 10.1149/1.2719644 |
| Popis: | The morphological and compositional changes of the solid electrolyte interphase (SEI) layer formed on the surface of Si thin electrodes during precycling were investigated. At the beginning of charging, the native layer (SiO 2 and silanol) covering the surface of the Si thin electrode is readily destroyed and a new SEI layer is formed by the decomposition of both organic solvents and anions. At this stage, the interfacial resistance decreases to a minimum level. Thereafter, the interfacial resistance increases with charging due to the growth of an SEI layer, which is mainly originated from the decomposition of organic solvents. During the discharging process, an SEI layer was formed mainly by the decomposition of anions. |
| Databáze: | OpenAIRE |
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