Colloquium
Department of Physics, NCU
A decade of golden age of operando x-ray spectroscopy for energy science
Prof. Chung-Li Dong (董崇禮)
Department of Physics, Tamkang University
Date 2021.11.23 (Tue)
Place S4-625
Time 14:00-16:00
Abstract: A new era of human demand for renewable energy is dawning and material scientists are devoted to hunting for clean and sustainable energy. To improve the energy conversion/generation/storage efficiency of current energy material is a great challenge beyond doubt. In many important energy material systems such as artificial photosynthesis, nanostructured catalysts, and smart materials, it is critical to look into the change of atomic and electronic structures near the interfacial region under their real operational conditions. Without knowing the atomic and electronic structures and how they vary in working environments, it is difficult to better engineer the material for superior performance in an efficient way. Synchrotron x-ray spectroscopies, including x-ray absorption and x-ray emission spectroscopies are powerful tools to study the local unoccupied and occupied electronic states. Utilizing the in situ technique, the access to monitor the change of atomic and electronic structures of the energy material under operational environment now becomes possible. This presentation will report the in situ characterization on energy relevant materials by synchrotron x-ray spectroscopy, including soft- and hard-x-ray absorption spectroscopy. Emerging characterization tool, recent progress of in situ technique development, and a number of recent studies will be presented in this talk.