MateriAlZ Seminar: Yan-Yan Hu
Friday, December 1, 2023 - 11:00 a.m. MST
Yan-Yan Hu
Professor
Department of Chemistry and Biochemistry
Florida State University
"NMR/MRI Studies of Ion Rransport, Interface Chemistry, and Microstructure Formation in Solid-State Batteries"
Zoom link | Passcode: 954101
MateriAlZ Seminar website | YouTube | Twitter
Abstract
Due to their non-invasive nature combined with sensitivity to local structures and molecular dynamics, solid-state NMR and MRI have been instrumental in tackling many critical questions that cannot be addressed with other techniques. Two examples of such questions are ion transport and lithium microstructure growth in solid ion conductors. Although many methods can determine the macroscopic behavior of these phenomena, the microscopic view, which is essential to guide material design, is often complex and elusive. Electrochemically driven tracer-exchange NMR, combining isotope tracer exchange induced by electric field gradient and high-resolution NMR, has demonstrated its efficacy in determining ion transport pathways. We have also employed this method to examine the origin of metallic Li microstructures in solids. In addition, in situ 7Li magnetic resonance imaging provides the necessary spatial and temporal resolution to monitor the microstructure formation and propagation process.
Bio
Dr. Yan-Yan Hu earned her B.S. in chemistry from Tsinghua University (Beijing, China) in 2006 and her Ph.D. in analytical chemistry from Iowa State University in 2011. Dr. Hu worked as a Royal Society Newton Fellow and Marie Curie Research Fellow at the University of Cambridge (2011-2014) before joining the faculty in the Department of Chemistry and Biochemistry at Florida State University as an assistant professor in 2014. She was promoted to associate professor with tenure in 2019 and full professor in 2022. Dr. Hu holds a joint appointment at the National High Field Magnetic Laboratory. Her research is focused on the development and application of advanced solid-state NMR methods for fundamental studies of energy materials. She is a recipient of the Marion Milligan Mason Award from the American Association for the Advancement of Science in 2016, the Emerging Young Investigator Award from the Florida Section Foundation in 2019. She was a Scialog Fellow for Energy Storage from 2017-2020 sponsored by the Research Corporation for Science Advancement and is a Developing Scholar at FSU since 2020.