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In inorganic-organic composite electrolytes, it is believed that an interface forms between the inorganic and organic phases. There is a major and long-term debate on ion transport pathways: Li ions can transport via organic matrix, inorganic fillers, organic-inorganic interface, or the combination of the three. Tracer-exchange NMR, developed by our group, has successfully probed Li-ion transport pathways in composite electrolytes, which combines 6Li -> 7Li isotope exchange with high-resolution 6Li NMR. The methodology and results shed light on the design, synthesis, and modification of solid electrolytes for the next-generation of Li-ion batteries.

Research Interests

Our research efforts focus on developing and improving solid-state nuclear magnetic resonance (NMR) techniques to achieve enhanced detection sensitivity, improved spectral resolution, and operando characterizations. We also leverage advanced ex situ and in situ multinuclear solid-state NMR methods and the state-of-the-art facility at the National High Magnetic Field Lab (NHMFL or MagLab) for investigating structure-property correlations and elucidating reaction mechanisms (In fact, almost 50% of our research efforts are performed at the MagLab! Here is a brief introduction about what we do overthere: The Scientist & the Sample ). We aim to gain a fundamental understanding of interfacial processes that have important scientific and technological implications. Foundational knowledge gained from our research will have significant impact on developing advanced electrochemical energy conversion and storage systems, efficient heterogeneous catalysis, and compatible interfaces in composite materials.

Research Interests

Grants