Distinguished Lectures at HZB: Prof. Jürgen Janek will give talk about the Materials Research for "Next Generation" Batteries
Prof. Dr. Jürgen Janek, Universität Gießen
The search for new and the development of improved electrochemical energy storage systems stimulates world-wide research efforts in both academia and industry. While impressive improvements and cost reductions are still to be expected for lithium ionbatteries (LIB) and are part of enormous industrial efforts, more fundamental research aims for the creation and understanding of completely new cell types.
In order to provide an up-to-date overview on recent developments, the current status of LIB will be briefly reviewed, before major trends in the study of new cell types will be discussed. Essentially, three types of potential "next generation"; batteries will be considered in more detail: (a) alkali metal/ sulfur batteries (e.g. Li/S8), (b) alkali metal/oxygen batteries (e. g. Li/O2) and (c) solid state batteries (SSB).
The lecture will focus on major materials challenges on the one hand and to mechanistic questions from the physicochemical point of view on the other hand. The lecture will help to better judge a dynamic research field by evaluating the true chances and risks of new cell types.
23.02.2015 16:00 o clock
Lecture Hall at Lise-Meitner-Campus, Hahn-Meitner-Platz 1, 14109 Berlin
Please note that for entering HZB premises a valid ID card/passport is required.
- Nanoislands on silicon with switchable topological texturesNanostructures with specific electromagnetic patterns promise applications in nanoelectronics and future information technologies. However, it is very challenging to control those patterns. Now, a team at HZB examined a specific class of nanoislands on silicon with interesting chiral, swirling polar textures, which can be stabilised and even reversibly switched by an external electric field.
- Lithium-sulphur pouch cells investigated at BESSY IIA team from HZB and the Fraunhofer Institute for Material and Beam Technology (IWS) in Dresden has gained new insights into lithium-sulphur pouch cells at the BAMline of BESSY II. Supplemented by analyses in the HZB imaging laboratory and further measurements, a new picture emerges of processes that limit the performance and lifespan of this industrially relevant battery type. The study has been published in the prestigious journal Advanced Energy Materials.
- Largest magnetic anisotropy of a molecule measured at BESSY IIAt the Berlin synchrotron radiation source BESSY II, the largest magnetic anisotropy of a single molecule ever measured experimentally has been determined. The larger this anisotropy is, the better a molecule is suited as a molecular nanomagnet. Such nanomagnets have a wide range of potential applications, for example, in energy-efficient data storage. Researchers from the Max Planck Institute for Kohlenforschung (MPI KOFO), the Joint Lab EPR4Energy of the Max Planck Institute for Chemical Energy Conversion (MPI CEC) and the Helmholtz-Zentrum Berlin were involved in the study.