2,4-Dimethoxy-2,4-dimethylpentan-3-one: An Aprotic Solvent Designed for Stability in Li–O2 Cells
| Autor: | Won-Jin Kwak, Michal Afri, Pessia Sharon, Daniel Sharon, Doron Aurbach, Michael Salama, Yang-Kook Sun, Aryeh A. Frimer, Daniel Hirshberg, Linda J. W. Shimon |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Inorganic chemistry
chemistry.chemical_element 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology Electrochemistry Hydrogen atom abstraction 01 natural sciences Biochemistry Oxygen Catalysis Oxygen reduction 0104 chemical sciences Anode Solvent Colloid and Surface Chemistry chemistry Nucleophile Lithium 0210 nano-technology |
| Zdroj: | Journal of the American Chemical Society. 139:11690-11693 |
| ISSN: | 1520-5126 0002-7863 |
| DOI: | 10.1021/jacs.7b06414 |
| Popis: | In this study, we present a new aprotic solvent, 2,4-dimethoxy-2,4-dimethylpentan-3-one (DMDMP), which is designed to resist nucleophilic attack and hydrogen abstraction by reduced oxygen species. Li–O2 cells using DMDMP solutions were successfully cycled. By various analytical measurements, we showed that even after prolonged cycling only a negligible amount of DMDMP was degraded. We suggest that the observed capacity fading of the Li–O2 DMDMP-based cells was due to instability of the lithium anode during cycling. The stability toward oxygen species makes DMDMP an excellent solvent candidate for many kinds of electrochemical systems which involve oxygen reduction and assorted evaluation reactions. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|