About this Abstract |
| Meeting |
MS&T25: Materials Science & Technology
|
| Symposium
|
Glasses and Optical Materials: Challenges, Advances, and Applications
|
| Presentation Title |
Extending Electrochemical Impedance Spectroscopy Capabilities for Non-Arrhenius and Fast-Ion-Conduction Studies of Glassy-Solid-State-Electrolytes |
| Author(s) |
Chris Martin |
| On-Site Speaker (Planned) |
Chris Martin |
| Abstract Scope |
Due to glass’s nature as a ‘universal solvent,’ endless tunability has led to extremely high ionic conductivities in oxysulfide glassy electrolytes over the past decades. With room temperature conductivities >1 mS/cm, the time constant of the equivalent circuit model for the bulk electrolyte now exceeds the limits for conventional impedance analyzers. Through the development and implementation of a measurement method, increasing from MHz to GHz frequency measurements on air-sensitive electrolytes is now possible. This allows for nearly twelve decades of frequency response over 2-300 degrees Celsius. By acknowledging the ‘Window Effect,’ the range of meaningful impedance spectroscopy has increased drastically, allowing for better characterization at and above room temperature. For the fastest of conductors, separate ‘low’ and ‘high’ frequency analyzers can now be leveraged in their respective ‘accuracy zones’ without non-Arrhenius behavior. Continued application contains broad reaching implications for the field of battery science and electrochemical characterization. |