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Surface Analytical Study Regarding the Solid Electrolyte Interphase Composition of Nanoparticulate SnO₂ Anodes for Li-Ion Batteries

Winkler, V.; Kilibarda, G.; Schlabach, S.; Szabo, D.V.; Hanemann, T.; Bruns, M.

This work presents a comparative surface analytical study on the solid electrolyte interphase (SEI) composition influenced by additives in the electrolyte using nanoparticulate SnO2 as anode active material for lithium ion b a t t e r i e s ( L I B s ) . In pa r t i c u l a r , l i t h i u m b i s (trifluoromethanesulfonyl)imide (LiTFSI) based electrolytes in combination with vinylene carbonate (VC) and 1 fluoroethylene carbonate (FEC) as electrolyte additives are used. The SEI composition of the electrodes is investigated at two different aging stages by means of the complementary X ray photoelectron spectroscopy (XPS) and time of flight secondary ion mass spectrometry (ToF SIMS), providing chemical and molecular information on the topmost surface layers. We are able to show that the additives evolve different influences on the chemical composition of the formed SEI. The use of both additives generally results in an improved cycling stability of the nanoparticulate SnO2 anodes. In consequence, these results open an effective possibility to improve the cycling stability of SnO2 based electrode materials for LIBs by defined tailoring of the electrolyte’s SEI composition.

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Postprint §
DOI: 10.5445/IR/1000062767
Veröffentlicht am 07.03.2019
DOI: 10.1021/acs.jpcc.6b06662
Zitationen: 18
Zitationen: 19
Cover der Publikation
Zugehörige Institution(en) am KIT Fakultät für Maschinenbau (MACH)
Institut für Angewandte Materialien - Energiespeichersysteme (IAM-ESS)
Institut für Angewandte Materialien - Werkstoffkunde (IAM-WK)
Karlsruhe Nano Micro Facility (KNMF)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2016
Sprache Englisch
Identifikator ISSN: 1932-7447, 1932-7455
KITopen-ID: 1000062767
HGF-Programm 49.02.06 (POF III, LK 02) ToF-SIMS
Erschienen in The journal of physical chemistry <Washington, DC> / C
Verlag American Chemical Society (ACS)
Band 120
Heft 43
Seiten 24706-24714
Nachgewiesen in Dimensions
Web of Science
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