时间:12月14日(星期一)下午15:00
地点:大学城B5一楼会议室
报告简介:
The conversion and storage of energy is becoming increasingly important. Finite reserves of fossil energy carriers and growing environmental concerns are leading to an increased use of so-called renewable energy sources such as solar or wind energy. A future society therefore requires materials to convert energy fluxes to energy carriers for the convenient storage and transport of energy. Lightweight borohydrides such as LiBH4 combine high volumetric (43 MJ/l) and high gravimetric (65 MJ/kg) energy densities and have been therefore discussed as hydrogen storage materials or rocket fuels. Due to their high ion conductivity at elevated temperatures borohydrides and borohydride based materials are also considered as solid state electrolyte for batteries and fuel cells.
We present the synthesis of lightweight complex hydrides and their hydrogen release reactions. We introduce strategies to tune the desorption temperature and to enable reversibility at near ambient conditions. On the example of LiBH4, we discuss the origin of the ion conductivity and the effect of imposed disorder either by halide additives or by nano-confinement.
附报告人简介:
Arndt Remhof published more than 100 scientific publications in peer reviewed journals and several book chapters. His current h-index is 25
Since 2014 Group leader within the laboratory “Materials for Energy Conversion” at the Swiss National Institute for Materials Research and Testing, EMPA in Dübendorf (CH).
2007-2013 Group leader within the laboratory “Hydrogen & Energy” at the Swiss National Institute for Materials Research and Testing, EMPA in Dübendorf (CH).
2002-07 Scientific assistant at the Institute of solid state physics (Prof. Dr. Dr. h. c. H. Zabel), Ruhr-Universität in Bochum, project leader “electron beam lithography”. Fields of research: Thin magnetic films and multilayers, artificial lateral structures, fine-tuning of magnetic properties by controlled hydrogen loading, X-ray and neutron scattering.
2000-02 Postdoctoral fellow at the condensed matter physics (Prof. Dr. R. Griessen), Free University of Amsterdam. Field of research: Hydrogen diffusion in thin films
1996-00 PhD student at the Institute of solid state physics (Prof. Dr. Dr. h. c. H. Zabel), Ruhr-Universität in Bochum. Field of research: Thin metallic films, hydrogen in thin films, phase transitions, epitaxy.
1995-96 Diploma thesis at the Institut Max von Laue – Paul Langevin, Grenoble on neutron diffraction on ultrasonically exited single crystals, supervised by Prof. Dr. A. Magerl.