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SUMMARY:Independent Research Proposal: Electrochemical Behavior and Halide 
 Trends in Hybrid Halide Perovskite Electrodes
LOCATION:Chemistry A101
TZID:America/Denver
DTSTART:20250425T160000
UID:2026-05-31-21-30-46@natsci.colostate.edu
DTSTAMP:20260531T213046
Description:About the Seminar:\n\nHybrid halide perovskites (HHP) have garn
 ered interest in materials development in recent years as a result of thei
 r facile and inexpensive syntheses\, tunable crystal structures\, and opti
 cal properties. Although HHPs are known for their optoelectronic applicati
 ons\, challenges related to stability and ion-migration have plagued perfo
 rmance. Their high lithium ion-diffusion and energy storage capacity have 
 pushed investigations for their performance as electrodes in alkali-ion ba
 tteries. However\, due to the soft nature of these materials\, their elect
 rochemical degradation pathways and potential for proton evolution must be
  considered and are not yet well understood. The central question that thi
 s research seeks to answer is: How do 2D-HHP anodes transport ions and beh
 ave electrochemically in solid-state batteries? We hypothesize that soft n
 ature of these materials may result in degradation pathways (e.g. halide i
 on migration\, proton evolution) that must be considered more thoroughly w
 hen trying to understand how HHP electrodes perform. This works seeks to i
 nvestigate the electrochemical behaviors of a 2D-HHP family of materials\,
   (BA)2(MA)2Pb3X10 (BA =n-butylammonium\, MA = methylammonium)\, X = Cl\,
  Br\, I)\, in solid-state lithium-ion batteries. We seek to understand how
  changes in the HHP halide identity affects these processes and solid-stat
 e battery performance by focusing ion-transport mechanisms using electroch
 emical impedance spectroscopy with ion selective electrodes\, differential
  electrochemical mass spectroscopy\, and in-operando X-ray techniques. Wit
 h these methods we will develop a comprehensive understanding of the ion-t
 ransport mechanisms and degradation pathways associated with electrochemic
 al performance of the 2D-HHP family (BA)2(MA)2Pb3X10 as electrodes in soli
 d-state lithium-ion batteries. Broadly\, this work seeks to address key ch
 allenges in nextgeneration energy applications (e.g. energy storage\, phot
 ovoltaics\, hydrogen evolution\, etc.) concerning poor electrochemical sta
 bility and cycle life\, convoluted ion migration and charge transport\, an
 d structural tunability of 2D HHPs. 4:00 pm
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