My research focuses on the synthesis and drawing of thin film glassy solid electrolytes for use in solid-state batteries. I am working to synthesize large-scale rectangular glass preforms of highly ionically conductive glasses that will be reheated until they are viscous liquids and then pulled, stretched, and cooled, thinning the preform down from 6 millimeters to around 100 microns. I am working to optimize this process, to prevent crystallization of the glass during the reheating, and to generate films that are as thin as possible. I have just recently drawn the first sample of a highly conductive lithium glassy solid electrolyte down to around 100 microns ever. I hope to continue thinning these glassy ribbons, while further testing their electrochemical behavior through testing with lithium metal anodes, and in the future, sulfur cathodes. This project relates to the NASA Space Technology Directorate through the need of highly energy-dense, and safe batteries in nearly every aspect of space missions.
Jacob Wheaton – Iowa State University
Student: Jacob Wheaton, Graduate Student in Materials Science and Engineering, Iowa State University
Research Mentor: Dr. Steve W. Martin

Development of the Thin Film Drawing Process of Lithium Glassy Solid Electrolytes for All-Solid-State Batteries
2024-2025, Graduate