کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1285436 | 973139 | 2008 | 5 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Ionic liquid electrolytes compatible with graphitized carbon negative without additive and their effects on interfacial properties Ionic liquid electrolytes compatible with graphitized carbon negative without additive and their effects on interfacial properties](/preview/png/1285436.png)
Introduction of bis(fluorosulfonyl)imide (FSI) as an anion to an ambient-temperature ionic liquid electrolyte based on 1-ethyl-3-methylimidazolium (EMI) as well as lithium (Li) cations can provide a reversible Li intercalation into a graphitized electrode, while such intercalation is completely irreversible without FSI. The surface-layer components on the graphitized electrodes, cycled in the ionic liquid electrolytes with and without FSI, were found to be chemically similar based on X-ray photoelectron spectroscopy. Ac impedance spectroscopy revealed that the resistance of the electrode charged with FSI was much lower even than that charged in a solvent electrolyte system containing ethylene carbonate (EC) and dimethyl carbonate (DMC). On the basis of these physicochemical analyses, the origins of cycleability in the presence of FSI are discussed.
Journal: Journal of Power Sources - Volume 183, Issue 1, 15 August 2008, Pages 436–440