(167e) Ion Conductive High Li+ Transference Number Polymer Composites for Solid-State Batteries
AIChE Annual Meeting
2022
2022 Annual Meeting
Materials Engineering and Sciences Division
Poster Session: Materials Engineering & Sciences (08A - Polymers)
Monday, November 14, 2022 - 3:30pm to 5:00pm
This work aims to examine a CSE system consisting of the garnet-type LiLaZrO2 (LLZO) and the single-ion conductor poly(lithium bistrifluorosulfonylimide methacrylate) (Li-PMTFSI), with the goal to identify transport mechanisms of the system in addition to quantifying critical electrochemical properties. The LLZO provides a conductive material that is kinetically stable against a lithium anode, while the Li-PMTFSI gives a polymer phase that ensures a high transference number, a feature that may improve interfacial impedance between the polymer and ceramic. The Li+ ion pathway is examined using a combination of electrochemical and solid-state nuclear magnetic resonance (NMR) techniques to determine how ion transport changes with parameters like ceramic content. This understanding is coupled with knowledge of the ion transport mechanism to design a CSE with optimal conductivity, thin-film processability, and low electrode interfacial impedance.
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