POS6-1088
Macromolecular Engineering Approaches Towards Advanced Polymer Mixed Ionic/Electronic Conductors For Solid-State Li-Metal Batteries
When and Where
Nov 30, -0001
12:00am - 12:00am
Presenter(s)
Seong Woo Jeong (Sungkyunkwan University)
Co-Author(s)
Abstract
To enable safer-by-design post-Lithium-ion solid-state Lithium-metal batteries (LMBs), polymers with both high ionic conductivity and oxidative stability are sought-after as solid-state electrolytes (SSE)s 2.0 and advanced binders for high-voltage positive electrodes, respectively. Accordingly, we will present in this communication backbone vs end-group macromolecular engineering strategies applying to hemitelechelic polymeric host matrices for Li+ cations modified by catechol derivatives. Pristine vs. end-group modified poly(n-alkyl ester)s and methoxy-PEG (mPEG) host matrices were selected to generate polymeric mixed ionic/electronic conductors (PMIECs) when mixed with LiTFSI. We will present the synthetic routes, chemical & thermal characterizations as well as electrochemical performances (sionic vs. sLi+, t+Li & ESW) of PMIECs featuring metal coordination capability and improved ionic conductivity (> 0.1 mS/cm @ 80°C) while preserving electrochemical stability windows (ESW) of their pristine counterparts.
