Seminar: Cation Transference and Field-Induced Motion of Neutral Species in Electrolytes

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February 22, 2024

Dr. Nitash P. Balsara is the Charles W. Tobias Professor of Electrochemistry in the Department of Chemical and Biomolecular Engineering at the University of California, Berkeley. His lab's research is focused on Electrochemical Energy and Ion Transport.

HIs talk will focus on the determination of cation transference number, the fraction of current carried by the cation in an electrolyte of uniform concentration relative to a reference velocity. The need for the reference velocity will be made clear. We find that transference can be strongly affected by the field induced motion of neutral molecules (solvents or polymers). I will discuss the use of electrophoretic NMR for determining the transference number. The possibility of using X-ray scattering to determine species velocities will also be discussed. Molecular dynamics simulations provide insight into the underpinnings of the measured transference numbers. 

Time-permitting, he will discuss some new insight gleaned from Quasi-Elastic Neutron Scattering.

March 1st, 2:30 – 3:30pm CST EER 3.646 or by Zoom: 828 685 7838,