Bulletin of the American Physical Society
APS March Meeting 2020
Volume 65, Number 1
Monday–Friday, March 2–6, 2020; Denver, Colorado
Session S40: Physics and Effects on Transport of Ion-Ion Correlation in Electrolyte Materials I
11:15 AM–2:03 PM,
Thursday, March 5, 2020
Room: 705
Sponsoring
Units:
DCOMP DCP DMP
Chair: Nicola Molinari, Harvard University
Abstract: S40.00001 : Direct measurement of ion mobility by electrophoretic NMR and implications for correlated migration in liquid electrolytes
View Presentation
Abstract
Presenter:
Monika Schönhoff
(University of Muenster)
Authors:
Monika Schönhoff
(University of Muenster)
Florian Schmidt
(University of Muenster)
Marc Brinkkötter
(University of Muenster)
Mark Phillip Rosenwinkel
(University of Muenster)
Pinchas Nürnberg
(University of Muenster)
For example, in Li salt-in-Ionic Liquid systems a negative mobility of Li+ may occur, implying a drift direction opposite to the expectation for a cation. This was attributed to a vehicular transport of Li in net negatively charged Li-anion clusters. Their stoichiometry can be deduced from the effective charge. Employing compositional variations, such as using asymmetric anions or high Li salt concentrations, a transition from a vehicular to a structural transport mechanism of Li+ can be achieved.
In further liquid electrolytes, containing organic additives or in glyme-based solvate ionic liquids, a drift of uncharged molecules in the electric field can be identified by 1H eNMR. Thus, conclusions on their correlated transport, due to coordination to Li+ are possible, sheding light on the mechanisms governing Li transport.
In summary, electrophoretic NMR elucidates transport mechanisms on a molecular level, and provides unique information; in particular, where correlated motion of different ion species is involved.
Follow Us |
Engage
Become an APS Member |
My APS
Renew Membership |
Information for |
About APSThe American Physical Society (APS) is a non-profit membership organization working to advance the knowledge of physics. |
© 2025 American Physical Society
| All rights reserved | Terms of Use
| Contact Us
Headquarters
1 Physics Ellipse, College Park, MD 20740-3844
(301) 209-3200
Editorial Office
100 Motor Pkwy, Suite 110, Hauppauge, NY 11788
(631) 591-4000
Office of Public Affairs
529 14th St NW, Suite 1050, Washington, D.C. 20045-2001
(202) 662-8700