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题目：   Electrode and Solid Electrolyte Materials for Li Batteries: Lithiation Mechanisms and Li Ion Mobility observed by Solid-State NMR spectroscopy
报告人： Dr. Sylvio Indris, Karlsruhe Institute of Technology (KIT), Germany
时间：   5月15日 (周三) 下午2:00
地点：   化学B楼410会议室
邀请人： 王开学 研究员


报告简介：
   Li-ion batteries are commonly used in portable electronic devices and recently also in electric vehicles due to their high energy and power density. NMR spectroscopy is a powerful tool to investigate local structures as well as ion dynamics in condensed matter. The fundamental delithiation/relithiation mechanisms occurring in the electrodes (layered systems, high-voltage spinels, olivines) during operation in a battery can be investigated by 7Li NMR spectroscopy performed on materials recovered at different charge/discharge states, i.e. at different Li contents [1,2]. The mobility of the Li ions in different solid electrolytes (oxides, sulfides) is investigated by temperature-dependent NMR spectroscopy including lineshape analysis, NMR relaxometry, and field-gradient NMR [3]. The results of these experiments are compared to those obtained by X-ray diffraction, X-ray absorption spectroscopy, and Mössbauer spectroscopy. 


References
[1] Electrochemical Delithiation/Relithiation of LiCoPO4: A Two-Step Reaction Mechanism Investigated by in situ X-Ray Diffraction, in situ X-Ray Absorption Spectroscopy, and ex situ 7Li/31P NMR Spectroscopy ,M. Kaus, I. Issac, R. Heinzmann, S. Doyle, S. Mangold, H. Hahn, V. S. K. Chakravadhanula, C. Kübel, H. Ehrenberg, S. Indris,J. Phys. Chem. C 118, 17279-17290 (2014).
[2] Delithiation/Relithiation Process of LiCoMnO4 Spinel as 5 V Electrode Material,C. Dräger, F. Sigel, S. Indris, D. Mikhailova, L. Pfaffmann, M. Knapp, H. Ehrenberg,J. Power Sources 371, 55-64 (2017). 
[3] Local Structures and Li Ion Dynamics in a Li10SnP2S12-Based Composite Observed by Multinuclear Solid-State NMR Spectroscopy,M. Kaus, H. Stöffler, M. Yavuz, T. Zinkevich, M. Knapp, H. Ehrenberg, S. Indris,J. Phys. Chem. C 121, 23370-23376 (2017).

 
报告人简介：

Dr. Sylvio Indris is a group leader in the Institute for Applied Materials – Energy Storage Systems (IAM-ESS) at Karlsruhe Institute of Technology (KIT) in Germany. He received his PhD in Physical Chemistry and Electrochemistry from Hannover University, Germany, in 2001. Before joining KIT, he worked as post-doc at State University of New York at Stony Brook (SUNYSB) in the group of Clare Grey, from November 2005 to April 2007. He is also a principal investigator at the Helmholtz Institute in Ulm.
Sylvio Indris is working on electrode and electrolyte materials for Li-ion batteries for more than a decade now. His research focus is on the elucidation of the fundamental electrochemical reaction mechanisms that are responsible for operation and degradation of the batteries. The materials investigated comprise different cathode materials (including layered compounds, spinel materials, olivine materials, and lithium transition-metal silicates) and anode materials (graphite, silicon, lithium titanate) as well as different liquid and solid electrolytes. Dr. Indris has published more than 100 peer-reviewed papers in the fields of Physical Chemistry, Electrochemistry, Materials Science, and Battery Technology. He filed 5 patents on lithium battery materials.


1. NASICON-Type Air-Stable and All-Climate Cathode for Sodium-Ion Batteries with Low Cost and High-Power Density, M. Chen, W. Hua, J. Xiao, D. Cortie, W. Chen, E. Wang, Z. Hu, Q. Gu, X. Wang, S. Indris, S.-L. Chou, S.-X. Dou, Nature Comm. 10, 1480 (2019).
2. In operando Synchrotron Diffraction and in operando X-ray Absorption Spectroscopy Investigations of Orthorhombic V2O5 Nanowires as Cathode Materials for Mg-Ion Batteries, Q. Fu, A. Sarapulova, V. Trouillet, L. Zhu, F. Fauth, S. Mangold, E. Welter, S. Indris, M. Knapp, S. Dsoke, N. Bramnik, H. Ehrenberg,J. Am. Chem. Soc. 141, 2305-2315 (2019).
3. Lithium/Oxygen Incorporation and Microstructural Evolution During Synthesis of Li-Rich Layered Li[Li0.2Ni0.2Mn0.6]O2 Oxides, W. Hua, M. Chen, B. Schwarz, M. Knapp, M. Bruns, J. Barthel, X. Yang, F. Sigel, R. Azmi, A. Senyshyn, A. Missiul, L. Simonelli, M. Etter, S. Wang, X. Mu, A. Fiedler, J. R. Binder, X. Guo, S. Chou, B. Zhong, S. Indris, H. Ehrenberg,Adv. Energy Mater., 1803094 (2019).
4. A Hydrostable Cathode Material Based on the Layered P2@P3 Composite with Revealed Redox Behavior of Cu for High-Rate and Long Cycling Sodium-Ion Batteries, Z. Yan, L. Tang, Y. Huang, W. Hua, Y. Wang, R. Liu, Q. Gu, S. Indris, S. Chou, Y. Huang, M. Wu, S.-X. Dou,Angew. Chem. Int. Ed. 58, 1412-1416 (2019).
5. Li Ion Dynamics in -Li3PS4 Observed by NMR: Local Hopping and Long-Range Transport, H. Stöffler, T. Zinkevich, M. Yavuz, A. Senyshyn, J. Kulisch, P. Hartmann, T. Adermann, S. Randau, F. Richter, J. Janek, S. Indris, H. Ehrenberg,J. Phys. Chem. C 122, 15954-15965 (2018).
6. Delithiation/Relithiation Process of LiCoMnO4 Spinel as 5 V Electrode Material,C. Dräger, F. Sigel, S. Indris, D. Mikhailova, L. Pfaffmann, M. Knapp, H. Ehrenberg,J. Power Sources 371, 55-64 (2017).
7. Li4PS4I: A Li+ Superionic Conductor Synthesized by a Solvent-Based Soft Chemistry Approach,S. J. Sedlmaier, S. Indris, C. Dietrich, M. Yavuz, C. Dräger, F. von Seggern, H. Sommer, J. Janek,Chem. Mater. 29, 1830-1835 (2017).
8. Local Structural Investigations, Defect Formation, and Ionic Conductivity of the Lithium Ionic Conductor Li4P2S6,C. Dietrich, M. Sadowski, S. Sicolo, D. A. Weber, S. J. Sedlmaier, K. S. Weldert, S. Indris, K. Albe, J. Janek, W. G. Zeier,Chem. Mater. 28, 8764-8773 (2016).
9. What Happens Structurally and Electronically During the Li Conversion Reaction of CoFe2O4 Nanoparticles: An Operando XAS and XRD Investigation
S. Permien, S. Indris, U. Schürmann, L. Kienle, S. Zander, S. Doyle, W. Bensch,Chem. Mater. 28, 434-444 (2016).
10. Electrochemical Delithiation/Relithiation of LiCoPO4: A Two-Step Reaction Mechanism Investigated by in situ X-Ray Diffraction, in situ X-Ray Absorption Spectroscopy, and ex situ 7Li/31P NMR Spectroscopy,M. Kaus, I. Issac, R. Heinzmann, S. Doyle, S. Mangold, H. Hahn, V. S. K. Chakravadhanula, C. Kübel, H. Ehrenberg, S. Indris,J. Phys. Chem. C 118, 17279-17290 (2014).