Methylene ethylene carbonate: Novel additive to improve the high temperature performance of lithium ion batteries
| Autor: | Jing Li, Dinesh Chalasani, Martin Payne, Brett L. Lucht, Nicole M. Jackson |
|---|---|
| Rok vydání: | 2012 |
| Předmět: |
Renewable Energy
Sustainability and the Environment Chemistry Inorganic chemistry Energy Engineering and Power Technology Electrolyte Lithium-ion battery Catalysis Anode chemistry.chemical_compound X-ray photoelectron spectroscopy Thermal stability Electrical and Electronic Engineering Physical and Theoretical Chemistry Methylene Ethylene carbonate |
| Zdroj: | Journal of Power Sources. 208:67-73 |
| ISSN: | 0378-7753 |
| DOI: | 10.1016/j.jpowsour.2012.02.004 |
| Popis: | The preparation of methylene ethylene carbonate (MEC) and the incorporation of MEC into lithium ion batteries as an electrolyte additive were investigated. MEC is prepared in good yield by mercury catalyzed cyclization. Addition of low concentrations of MEC (1–2%) to 1 M LiPF 6 in 3:7 ethylene carbonate/ethyl methyl carbonate improves the capacity retention of lithium ion batteries cycled at elevated temperature (60 °C). Ex situ surface analysis (XPS and FTIR) of the electrodes supports the presence of poly(methylene ethylene carbonate) on the anode surface. Modification of the anode solid electrolyte interphase (SEI) correlates with significant improvements in the cycling performance at 60 °C. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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