Search: WFRF:(Matic Aleksandar 1968)
> (2010-2014)
> Xiong Shizhao >
Analysis of the sol...
Analysis of the solid electrolyte interphase formed with an ionic liquid electrolyte for lithium-sulfur batteries
-
- Xiong, Shizhao (author)
- Chalmers tekniska högskola,Chalmers University of Technology
-
- Xie, K (author)
- National University of Defense Technology
-
- Blomberg, Erik, 1987 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
-
show more...
-
- Jacobsson, Per, 1958 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
-
- Matic, Aleksandar, 1968 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
-
show less...
-
(creator_code:org_t)
- Elsevier BV, 2014
- 2014
- English.
-
In: Journal of Power Sources. - : Elsevier BV. - 0378-7753. ; 252, s. 150-155
- Related links:
-
http://dx.doi.org/10...
-
show more...
-
https://doi.org/10.1...
-
https://research.cha...
-
show less...
Abstract
Subject headings
Close
- We have investigated the formation of the solid electrolyte interphase (SEI) on lithium electrodes in the presence of an ionic liquid electrolyte with a particular focus on the influence of polysulfides present in the electrolyte on the SEI. The electrochemical performance of symmetric cells with lithium electrodes and electrolytes composed of N-Methyl-(n-butyl)pyrrolidinium bis(trifluoromethanesulfonyl)imide (PYR14-TFSI) and LiTFSI, with and without the addition of polysulfides, were analyzed as well as the chemical composition of the SEI, before and after cycling. The cycling behavior of the symmetrical cells shows that the SEI films are relatively stable in the ionic liquid electrolyte, also in the presence of polysulfides. However, the presence of polysulfides results in a higher SEI layer resistance (R-SEI) and a higher activation energy. From X-ray photoelectron spectroscopy spectra (XPS), with argon-ion sputtering for depth profiling, we find that the SEI is formed by decomposition products from both cations and anions of the electrolyte. The XPS spectra show that the presence of polysulfides alters the decomposition process of the electrolyte, resulting in a SEI film with different chemical composition and structure, in line with the results from the electrochemical performance.
Subject headings
- NATURVETENSKAP -- Kemi -- Oorganisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Inorganic Chemistry (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Annan teknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Other Engineering and Technologies (hsv//eng)
Keyword
- Polysulfides
- Solid electrolyte interphase
- Lithium-sulfur batteries
- Ionic liquid
- X-ray photoelectron spectroscopy
Publication and Content Type
- art (subject category)
- ref (subject category)
Find in a library
To the university's database