New Electrolyte System for Li‐Ion Battery
| Autor: | Yair Ein-Eli, S. R. Thomas, V. R. Koch |
|---|---|
| Rok vydání: | 1996 |
| Předmět: |
Renewable Energy
Sustainability and the Environment Intercalation (chemistry) Inorganic chemistry Diethyl carbonate chemistry.chemical_element Electrolyte Condensed Matter Physics Surfaces Coatings and Films Electronic Optical and Magnetic Materials chemistry.chemical_compound chemistry Propylene carbonate Materials Chemistry Electrochemistry Lithium Graphite Dimethyl carbonate Carbon |
| Zdroj: | Journal of The Electrochemical Society. 143:L195-L197 |
| ISSN: | 1945-7111 0013-4651 |
| Popis: | Lithium ions reversibly intercalate into graphite anodes in electrolytes containing sulfur dioxide. The electrolyte solutions were composed of LiAsF{sub 6} 1 M and {approximately}20% by weight SO{sub 2} in methyl formate, propylene carbonate, diethyl carbonate, or dimethyl carbonate. A high degree of Li-ion intercalation into graphite and stable cycle life were obtained in cells containing these electrolyte systems, which were previously thought to be incompatible with graphite negative electrodes because the graphite structure was destroyed by interaction with the solvent molecules. The use of SO{sub 2} as an additive to the organic solution offers the advantage of forming fully developed passive films on graphite at much higher potential (2.7 V vs. Li/Li{sup +}) than that of electrolyte reduction ( |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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