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Meeting MS&T22: Materials Science & Technology
Symposium 2022 Undergraduate Student Poster Contest
Presentation Title Mixed Oxy-sulfide Nitride Glassy Solid Electrolyte Materials: Electrochemical Impedance Spectroscopy and Density of Na4P2S7-6xO4.62xN0.92x
Author(s) Nicholas J. Oldham, Madison Olson, Steve W Martin
On-Site Speaker (Planned) Nicholas J. Oldham
Abstract Scope In the search for high conductivity large working range glassy electrolytes, oxy-nitride electrolyte glasses have previously been shown to have favorable working ranges but low conductivity. Pure sulfide electrolyte glasses have been shown to have high ionic conductivity, but low working ranges. This experiment shows that by synthesizing a mixed-oxy-sulfide nitride (MOSN) electrolyte glass a balance of both favorable characteristics can be achieved. The (1-x)[(2/3)Na2S+(1/3)P2S5]+x[(2/3)NaPON+(1/3)Na2S] glass series (0 ≤ x ≤ 0.5) was used in this experiment. The ionic conductivity of this series was analyzed through electrical impedance spectroscopy (EIS) using bulk glass samples at frequencies ranging from 0.1 to 107 hertz. Density data was also collected through the Archimedes method to determine overall trends. These results further characterize MOSN electrolyte glasses and help determine an ideal glass in the Na4P2S7-6xO4.62xN0.92x glass series for thin film electrolyte glass production.

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