Dresden 2026 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
CPP: Fachverband Chemische Physik und Polymerphysik
CPP 17: Poster I
CPP 17.36: Poster
Montag, 9. März 2026, 19:00–21:00, P5
Toward Improved Lithium Batteries: Performance of Magnetron-Sputtered Silicon Anodes — •Thomas Köhler1, Christian Ludt1, Tina Weigel1, Marc Ferch2, Robert Hahn2, Annekatrin Delan3, Charaf Cherkouk4, Hartmut Stöcker1, and Dirk C. Meyer1 — 1TU Bergakademie Freiberg, 09599 Freiberg, Germany — 2Fraunhofer IZM, 13355 Berlin, Germany — 3Fraunhofer IZM-ASSID, 01468 Moritzburg, Germany — 4Helmholtz-Zentrum Dresden-Rossendorf, 01328 Dresden, Germany
Silicon is considered one of the most promising anode materials for lithium-ion batteries due to its high theoretical specific capacity of 3590 mAh/g in the Li3.73Si phase at room temperature and its broad availability. However, its practical application remains limited because i) significant volume changes occur during cycling, ii) its intrinsic electronic conductivity is low, and iii) the stability of the solid-electrolyte interphase is insufficient.
In this work, silicon thin-film anodes were fabricated by magnetron sputtering onto copper foil. The electrodes were thoroughly characterized regarding their chemical composition and surface morphology. Scanning electron microscopy was used to evaluate the structural stability of the silicon layers in contact with a polymer-based solid electrolyte and to compare their degradation behavior with that in conventional liquid electrolyte. Electrochemical testing with the polymer electrolyte shows promising cycling performance; the reduced surface degradation observed in SEM correlates with improved long-term stability of the cell system.
Keywords: Lithium Ion Battery; Silicon Anodes; Thin-film Anodes; Solid-State Battery; Polymer Electrolyte