PhD Dissertation Proposal Defense by Rebecca Glaser

Event Details
  • Date/Time:
    • Thursday August 15, 2019
      10:00 am - 12:00 pm
  • Location: MRDC 3515
  • Phone:
  • URL:
  • Email:
  • Fee(s):
  • Extras:
No contact information submitted.

Summary Sentence: Tuning Active Material Microstructure and Electrolyte Composition for Enhanced Performance of High-Loading Cathodes For Lithium-Sulfur Batteries

Full Summary: No summary paragraph submitted.



Rebecca Glaser


Title: Tuning Active Material Microstructure and Electrolyte Composition for Enhanced Performance of High-Loading Cathodes For Lithium-Sulfur Batteries

Thursday, August 15, 2019

10:00 AM
in MRDC 3515

Committee Members:

Prof. Gleb Yushin, Advisor, MSE

Prof. Jud Ready, GTRI

Mohan Sanghadasa, Ph.D., US Army CCDC Aviation and Missile Center, Redstone Arsenal, AL

Prof. Preet Singh, MSE

Prof. Meilin Liu, MSE



Lithium sulfur (Li-S) batteries have the potential to revolutionize rechargeable energy storage technologies because they promise high theoretical gravimetric capacity combined with lower cost and lower toxicity. Fabrication of high areal loading (thicker) S cathodes is particularly important for maximizing Li-S cell energy storage characteristics because the weight and volume of inactive cell components (metal current collectors and separator membranes) undesirably contribute a significant portion of that for the otherwise lightweight Li-S cells. Unfortunately, making high-performance energy-dense Li-S cells with thick and dense electrodes is extremely challenging. Here I aim to systematically investigate two strategies for enhancing performance of high-loading S cathodes and uncover fundamental mechanisms that govern the complex structure/chemistry – electrochemical performance relationships. First, I will explore the incorporation of layered lithium metal oxides into the design of S-based cathodes. The use of lithium metal oxides has largely not been explored, except in a few earlier studies by our group. I aim to investigate different strategies for the formation of core-shell Li2S/Li-M-O particles, where M is the selected metal or metal combinations. The selection of particular metals has been motivated by their prior use as polysulfide absorbers with S cathodes. I further aim to study exactly how and why lithium metal oxides affect (possibly improve) cell performance, their dependence on the M composition and relative oxide fraction and the differences between Li-containing metal oxides and their Li-free metal oxide analogs. Second, I will study a relatively unexplored class of electrolytes that offer reduced viscosity, improved wettability, and sufficient solubility of a broader array of salt additives choices. A range of electrolyte compositions will be screened and studied to understand their behavior in cells.

Additional Information

In Campus Calendar

Graduate Studies

Invited Audience
Phd proposal
  • Created By: Jacquelyn Strickland
  • Workflow Status: Published
  • Created On: Aug 11, 2019 - 8:12pm
  • Last Updated: Aug 12, 2019 - 11:39am