Skip to main content

Predicting solvent mediated preferential ion pairing in ionic solute mixture


EMSL Project ID
49376

Abstract

A comprehensive understanding of solvent mediated ion pair formation between ionic solutes at the molecular- and mesoscale level remains elusive. This knowledge gap prevents the straightforward tailoring of material formulations for bulk ionic solution (i.e. electrolytes), property optimization and control of interfacial interactions relevant to many biological and chemical reactions. This project focus on the effect of oxidation state and molecular size of redox active ions on preferential ion-pair formation in complex solvent mixtures. Fundamental percipience of solvent-ion and ion-ion interactions and the variance in these solutions for differing charge and molecular size of ionic solutes will be assembled using multi-modal spectroscopic and computational analysis. A team of researchers with expertise in demystifying the solvation structure and dynamics within liquid electrolytes will fuse complementary experimental (NMR, EPR and Raman spectroscopy) and computational (DFT calculations, AIMD simulations) methods together, utilizing the exceptional resources available at EMSL. Gleaned information regarding constitutive interactions will be correlated to conductivity, viscosity, and electrochemical/thermal stability of electrolyte solution.

Project Details

Project type
Large-Scale EMSL Research
Start Date
2016-10-01
End Date
2018-09-30
Status
Closed

Team

Principal Investigator

Vijayakumar Murugesan
Institution
Pacific Northwest National Laboratory

Co-Investigator(s)

Karl Mueller
Institution
Pacific Northwest National Laboratory

Team Members

Aaron Hollas
Institution
Pacific Northwest National Laboratory

Samantha Bennett
Institution
Pacific Northwest National Laboratory

Swadipta Roy
Institution
Pacific Northwest National Laboratory

Nav Nidhi Rajput
Institution
Tufts University

Xiaosong Du
Institution
Oregon State University

Mond Guo
Institution
Pacific Northwest National Laboratory

Xiaoliang Wei
Institution
Pacific Northwest National Laboratory

Wei Wang
Institution
Pacific Northwest National Laboratory

Malsoon Lee
Institution
Pacific Northwest National Laboratory

Amity Andersen
Institution
Environmental Molecular Sciences Laboratory

Niranjan Govind
Institution
Pacific Northwest National Laboratory

Ajay Karakoti
Institution
Pacific Northwest National Laboratory

Perla Balbuena
Institution
Texas A&M University