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SUMMARY:Harnessing Static and Dynamic Disorder for Solid-state Ion Transpor
 t
LOCATION:Chemistry A101
TZID:America/Denver
DTSTART:20260127T160000
UID:2026-05-17-10-29-21@natsci.colostate.edu
DTSTAMP:20260517T102921
Description:Abstract:\n\nMastery over solid-state ion transport is paramoun
 t for broad diversity of applications and technologies\, including batteri
 es\, fuel cells\, neuromorphic computing\, and beyond. Both static and dyn
 amic disorder play a crucial role in dictating ion diffusion processes in 
 the solid state. Our work seeks to understand and harness disorder across 
 time and length scales to impact ion transport processes. This seminar wil
 l highlight two studies that emphasize static and dynamic disorder – and
  the interplay between them – in two families of solid-state ion conduct
 ors. The first vignette will highlight our work in understanding atomic si
 te disorder in lithium metal halide solid-state ion conductors. We have re
 cently discovered several new earth-abundant spinel ion conductors\, inclu
 ding Li-Mg-Zr-Cl and Li-Zn-Zr-Cl. Incorporating multiple cations in the sp
 inel structure triggers a significant rearrangement of the cation local st
 ructure that creates a larger number of low-energy pathways for lithium-io
 n transport. The second vignette will focus on argyrodite solid-state ion 
 conductors. The argyrodites Li6PS5X (X = Cl–\, Br–\, I–\, CN–) are
  amenable to a large degree of both static and dynamic disorder that consp
 ire to influence mobile ion dynamics. Through local structure probes\, we 
 have identified signatures of PS4 rotational disorder. The amplitude of th
 ese (presumably dynamic) rotations is correlated with the presence of site
  disorder and with higher lithium-ion conductivity. We further couple the 
 presence and extent of rotational disorder with the underlying contributio
 ns to lithium-ion transport. Taken together\, this work illustrates the nu
 anced role of static and dynamic disorder in solid-state ion transport.\n\
 n&nbsp\;\n\nSpeaker Bio:\n\nProf. Annalise Maughan is an Assistant Profess
 or in the Department of Chemistry at Colorado School of Mines and holds a 
 joint appointment with the National Renewable Energy Laboratory (NREL). Sh
 e received her B.S. in Chemistry from Northern Arizona University and her 
 Ph.D. in Chemistry from Colorado State University working with Prof. Jamie
  Neilson. She then joined the National Renewable Energy Laboratory (now th
 e National Laboratory of the Rockies) as a Director’s Postdoctoral Fello
 w prior to joining the faculty at Colorado School of Mines in 2021. Her re
 search program is focused on solid-state materials chemistry for renewable
  energy\, with an emphasis on understanding the fundamental principles tha
 t connect chemistry\, local and long-range structure\, and dynamics to fun
 ctional properties such as charge transport and light absorption/emission.
  She is the recipient of several awards\, including the NREL Foundation’
 s Outstanding Woman in STEM Award\, the NSF CAREER Award\, the Department 
 of Chemistry Outstanding Faculty Award\, the W. M. Keck Award for Graduate
  Mentorship\, and the 2025 Chemistry of Materials Lectureship and Best Pap
 er Award. 4:00 pm
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