Graduate Student Seminar
November 01, 2024
12:45 p.m. ET
Wean Hall 7500
Ion Transport in Single-Ion Conducting Polymers: Can it be Fast Enough for Battery Electrolytes?
An understanding of the transport mechanisms for ions in single-ion conducting (SIC) polymers, polymers with ionic groups covalently bonded to the polymer backbone, is needed to design these polymers for use as electrolytes. Historically, the ionic conductivity of SICs has been too low for practical applications. In this talk I will describe how the ions move in two different SIC polymer chemistries, as deduced from a combination of experiments and atomistic molecular dynamics (MD) simulations. Understanding the molecular transport mechanisms gives some clues about how to improve the conductivity. In particular, we investigate adding a small amount of organic solvent into the polymers and find that this leads to orders of magnitude increases in conductivity. The simulations provide molecular-level insight into the ion transport mechanism in these solvent-swollen SIC polymers.
Amalie L. Frischknecht, Center for Integrated Nanotechnologies, Sandia National Laboratories
Frischknecht is a Principal Member of Technical Staff at Sandia National Laboratories and a staff scientist at the Center for Integrated Nanotechnologies (CINT), a DOE Nanoscale Science Research Center and user facility at Sandia and Los Alamos National Labs. She received her PhD in Physics from the University of California, Santa Barbara in 1998, and went on to postdocs at ExxonMobil Research and Engineering Company (1998-2000) and at Sandia National Laboratories (2000-2003), before becoming a member of technical staff at Sandia in 2003. Amalie is a Fellow of the American Physical Society (APS), and recently served in the Chair line of the APS Division of Polymer Physics. Her recent research primarily focuses on molecular simulations of polymers relevant to energy applications, including ion-containing polymers.
Upcoming Events
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January 31 2025
10:00 AM ET
Materials Science and Engineering
"Optimal Discovery of multi-dimensional Pareto Sets in High Entropy Alloys," presented by Raymundo Arróyave, Texas A&M University
McConomy Auditorium, First Floor Cohon University Center
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February 7 2025
10:00 AM ET
Materials Science and Engineering
Intermediate Temperature Proton Conducting Solid Oxide Electrolysis Cells with Improved Performance and Durability, presented by Xingbo Liu, West Virginia University
McConomy Auditorium, First Floor Cohon University Center
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February 14 2025
10:00 AM ET
Materials Science and Engineering
"Epitaxial integration of dissimilar semiconductors for infrared optoelectronics," presented by Kunal Mukherjee, Stanford University
McConomy Auditorium, First Floor Cohon University Center
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February 21 2025
10:00 AM ET
Materials Science and Engineering
McConomy Auditorium, First Floor Cohon University Center
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February 28 2025
10:00 AM ET
Materials Science and Engineering
Extreme mechanics and manufacturing of materials across scales, presented by Yu Zou, University of Toronto
McConomy Auditorium, First Floor Cohon University Center
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March 14 2025
10:00 AM ET
Materials Science and Engineering
A Journey from Atoms to Materials: Computationally-Guided Discovery and Design of Functional Materials, presented by Prashun Gorai, Colorado School of Mines
McConomy Auditorium, First Floor Cohon University Center