Crystallography in large scale facilities

10:00 • INT23 • Battery materials and diagnostics using advanced operando techniques > C. Claire VILLEVIEILLE
Content : Since the commercialization of lithium-ion (Li-ion) batteries by Sony in 1991, researchers have
been extensively working on increasing the specific energy of both negative and positive electrode
materials by replacing, respectively, graphite and LiCoO2 used therein. Although the specific energy
of Li-ion batteries can be slightly increased, this nearly 30-year-old intercalation-chemistry-based
battery technology is approaching its limitations. Thus, other battery chemistries based on Na-ion
chemistry or on solid electrolytes have received considerable attention. During electrochemical
cycling, these battery systems exhibit several changes at the bulk and the interface/surface levels,
the investigation and understanding of which require new characterization tools. There are two
different approaches to understand the reaction mechanism of electroactive materials during cycling,
namely using either ex situ or in situ/operando modes. For the latter approach, the development of
reliable electrochemical cells is of a prime importance (Figure 1). This is never an easy task though,
since the design of such cells has to be adequate to the technique of a choice and its individual
requirements. Once a proper design is, however, found, the surface, the bulk, the interphases, and
finally the combination of these can be studied and the reaction mechanisms can be better
understood and/or elucidated, thus further improving the battery technology. Through this talk, we
will focus on the analysis of the electrochemical reactions occurring during cycling of selected
materials by combination of different operando/in situ studies like X-ray diffraction, neutron
diffraction, neutron imaging and X-ray tomographic microscopy etc.
10:30 • 632 • From XFELs to Synchrotrons and back: High output serial crystallography to image the structure and dynamics of biological macromolecules. > D. Dominik OBERTHÜR 11:00 • 614 • Coherent diffraction imaging at space-group forbidden reflections > G. Guillaume BEUTIER 11:20 • 399 • Structural Complexity in the RP phase La2CoO4+δ Explored by Synchrotron X-ray Single Crystal Diffraction and Neutron Powder Diffraction. > R. Ruben DE BARROS 11:40 • 231 • EMBL@PETRA4 – an Integrated Facility for Structural Biology and Imaging > T. Thomas R. SCHNEIDER