Dr. Andreas Keilbach
(Anton Paar)

New developments for in-situ small-angle X-ray scattering experiments in the home laboratory

Andreas Keilbach¹, Philipp Gumpl²

¹Anton Paar GmbH, Graz, Austria
²Anton Paar Malaysia, Anton Paar Malaysia Sdn Bhd, Selangor, Malaysia

Small-angle X-ray scattering (SAXS) is a widely used characterization method for nanostructured materials. It is commonly employed to measure e. g., the size and shape of proteins in solution, micellar systems, and nanocomposites only to name a few. While laboratory-based SAXS instruments are available for long time these were thought to be limited to mainly static experiments. In-situ measurements using method combinations of SAXS with e. g., rheological or electrochemical were a strong domain of large synchrotron facilities. Recently, improvements in SAXS instrumentation made such experiments also possible in the home lab as well.

In my talk I want to present some recent examples of measurements using the Anton Paar SAXSpoint 5.0 SAXS instrument for the in-situ/in-operando characterization of battery and supercapacitor systems during electrochemical cycling. Also, examples on RheoSAXS measurements will be shown.

Figure left: Pore filling of a porous carbon host with Iodine during electrochemical cycling.
Figure right: BatteryCell for SAXSpoint.