With further progress in improving lithium ion batteries the focus of research has turned to alternative technologies (next-generation batteries), including all-solid-state-batteries (ASSB), since these systems have the potential to exceed current battery systems in terms of energy density as well as safety concerns.
For commercial use of ASSBs it is crucial to use highly ionic conductive solid electrolytes while simultaneously ensuring proper interfacial contact and stability. During the last years very promising sulfur-based candidates have been synthesized and investigated, showing ionic conductivities in the range of 10 mS cm-1 at room temperature.
Unfortunately, it is often neglected to ensure well defined experimental conditions. Therefore the resulting values will vary a lot like a recently published joint study has shown. It demonstrates that the resulting conductivity values for the same set of samples strongly depend on the used experimental conditions and procedures.
In this application note, we show how critical especially a precisely and accurately tracked and (re)-adjusted force for the investigation of solid ion conductors really is. An ideal application for the CompreDrive by rhd instruments!
To cite this application note, please use: “Karlsson et al., rhd instruments GmbH & Co. KG, Application Note: Introducing: Pressure-dependent determination of the ionic resistance of solid ion conductors, August 2020”.