|About this Abstract
|MS&T23: Materials Science & Technology
|Grain Boundaries, Interfaces, and Surfaces: Fundamental Structure-Property-Performance Relationships
|In-situ Air-free 4D-STEM Biasing of Model Lithium-sulfur Batteries
|Hadas Sternlicht, Benjamin H. Savitzky, Alpesh Khushalchand Shukla, Colin Ophus, Andrew M. Minor
|On-Site Speaker (Planned)
While sulfur has been reported as a promising cathode, practical use of lithium-sulfur batteries is impeded by challenges such as the low electric conductivity of Sulfur. This work determines microstructural changes in lithium-sulfur batteries upon biasing, which is crucial for identifying the mechanisms that alter lithium-ion transport and affect battery performance. To do so, lithium-sulfur micrometer length-scale solid state batteries are fabricated, biased and studied entirely in-situ using 4D-STEM. This approach allows focus on a single controllable interface. A full air-free setup was developed and is being used to transfer samples to and from the glove box during sample preparation and characterization. Carbon is introduced to and coated on the sulfur cathode, in order to exploit the improved properties associated with the sulfur(carbon) cathode compared to sulfur. These include improved conductivity, and prevention of sulfur loss via vapor pressure.