Event (334)

Solving the challenges of Na-ion battery electrodes
Solving the challenges of Na-ion battery electrodes

07 July 2016  Sodium layered oxides, NaxMO2 (M = Ti – Cu), show great promises as positive electrode material candidates for Na-ion batteries. However, detailed structural analysis of these materials presents many difficulties owing to their reactivity in ambient conditions, numerous structural transitions as a function of the sodium content and extended stacking fault occasionally resulting in partial amorphization of the sample. This webinar will cover the study of P2-NaxFe1/2Mn1/2O2 positive electrode material focusing on the powder X-ray diffraction (PXRD) data collection strategies used to address the challenges inherent to sodium layered oxide in general.

The power of powder - Screening of protein based pharmaceuticals

18 January 2016  Proteins often form microcrystalline precipitates with an average size of crystallites (~ 0.1 - 1 μm) which in many cases are ideal for X-ray powder diffraction (XRPD). To date, a series of experiments and data analyses have been carried out, which demonstrate the validity of XRPD to study microcrystalline protein samples. This method is powerful for high-throughput polymorph identification and crystal screening and also suitable for structure solution. In this webinar, we demonstrate the complementarity of laboratory and synchrotron XRPD as an analysis tool in protein crystallography. Parametric measurements (variation of relative humidity or pH) will be presented on pharmaceutical proteins and their complexes with organic ligands. A question and answer session will conclude the presentation.