Regensburg 2022 – wissenschaftliches Programm
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 17: Poster 2
CPP 17.5: Poster
Dienstag, 6. September 2022, 11:00–13:00, P2
Design, fabrication and nano-scale characterization of novel SEI layers — •Zhuijun Xu1, Yanjun Cheng2, Yonggao Xia2, and Peter Müller-Buschbaum1,3 — 1TU München, Physik-Department, LS Funktionelle Materialien, 85748 Garching, Germany — 2Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, 315201, Ningbo, China — 3MLZ, TU München, 85748 Garching, Germany
Rechargeable lithium metal batteries have been recognized as one of the most promising energy storage devices due to their superior energy density. However, serious safety concerns and poor cyclability are challenges originating from an uncontrolled lithium dendrite growth and an unstable solid electrolyte interface (SEI) layer. One strategy to suppress dendrite growth is a surface modification with amphiphilic block copolymers, such as PDMS-b-PAA, which bear some clear advantages including absorbing mechanical stress, conducting lithium ion and controlling the lithium dendrite growth process. With ex-situ scattering techniques or in-situ scattering studies, the structures of the surface modified lithium metal anodes and structure formation processes are studied. In particular, by applying GISAXS, the horizontal structures and vertical structures of the polymer films on the lithium metal surfaces are investigated.