People

Werner J.F. Weppner

Professor, Ph.D. - Principal Investigator

Curriculum

9 Sept. 1941 Born in Mainz/Rhine, grown up in Mainz und Kamp-Bornhofen/Rhine

Education

1961-68 Studies of Physics, Chemistry and Mathematics at Johannes-Gutenberg-University Mainz, Diploma in Physics (Dipl. Phys.), Diploma Thesis carried out at Max-Planck-Institute for Chemistry, Mainz (w/ Prof. Heinrich Hintenberger) [1]

1969-73 Doctoral research and teaching at Dortmund University, Department of Chemistry.

16 Feb.1973 Ph.D. (Dr.rer.nat.) in the field of Solid State Electrochemistry, (w/ Prof. Hans Rickert) [2]

Professional Activities

1968-75 Research Assistant and Lecturer, Chemistry Department, Dortmund University

1975-76 NATO Scholar, Center for Materials Research, Stanford University, Stanford, CA, USA

1976-77 Visiting Assistant Professor of Materials Science and Engineering, Stanford University, Stanford, CA, USA [3]

1977-86 Scientific Co-Worker, Head of Solid-State Electrochemistry Group at the Max-Planck-Institute for Solid State Research, Stuttgart

1981 Appointment to Adjunct Professor of Materials Science and Engineering, Stanford University, Stanford, CA, USA [4]

1985 Venia Legendi (Habilitation, Dr. rer. nat. habil.) in Physical Chemistry, Chemistry Department, Stuttgart University; Lecturer in Physical Chemistry at Stuttgart University [5]

1986-93 C3 Associate Professorship equivalent position at the Max-Planck-institute for Solid State Research, Stuttgart [6]

1993-2006 C4-Professor (Full Professor and Director), Chair for Sensors and Solid-State Ionics, Faculty of Engineering, Christian-Albrechts University, Kiel, Germany; Affiliate Membership in the Faculty of Mathematics and Natural Sciences; 30 Sept. 2006 statutory retirement [7] [8] xxx

2006-09 Head of German Science Foundation Project "Further Understanding and Development of Solid Lithium Electrolytes Based on Garnet-like Structure for Batteries and other Applications", Christian-Albrechts University, Kiel [21]

2007 Discovery of Li₇La₃Zr₂O₁₂ (LLZO), a Garnet-type solid electrolyte with high ionic conductivity (~1 mS/cm) and stability with metallic lithium (with Ramaswamy Murugan). This invention paves the way for the epochal revolution towards all-solid-state batteries. Developments are in progress worldwide. [9]

Other Scientific and Academic Activities

1978-81 Member of the Inernational Expert Committee of OECD for Generating Physico-Chemical Test Programs for Environmentral Chemicals

1981 and 1986 NATO scholarships for research in the Department of Materials Science and Engineering at Stanford University, Stanford, CA, USA

1986 Recipient of the "1st European Research Prize" for fundamental work in the field of chemical sensors

1987 Organizer of the first large International Conference on Solid State Ionics (ISSI 6), Garmisch-Partenkirchen [10]

1991-95 Member of the Unesco-EPS Advisory Committee for Energy Storage and Saving

1994-2005 Organizer of 11 annual EU-funded Euroconferences in a variety of European countries as well as NATO, EU asnd DFG sponsored workshops on electrochemical sensors, electrochromic systems, oxide electrolyte fuel cells and solid electrolyte lithium batteries at various places [11]

1995-97 President of the International Society for Solid State Ionics (ISSI) [12]

1997 Co-Organizer of the 11th international Conferfence on Solid State Ionics, Honolulu, Hi, USA [13]

2002 -2004 Dean of the Faculty of Engineering, Christian-Albrechts-University, Kiel [14]

2002-2006 Member of the Senate of Christian-Albrechts-University, Kiel

> 2010. Industrial developments of All-Solid-State Lithium Batteries based on LLZO solid electrolytes with lithium metal anodes and high voltage cathodes in progress worldwide

> 300 Refereed papers in all areas of Solid State Ionics [15]

> 30 Patents in the fields of Chemical Sensors, Solid State Lithium Battery Electrolyte and Electrode Materials, Fuel Cells, Electrochromics,... [16]

Editorships

1995 Founder and Editor-in-Chief of "IONICS, International Journal of Ionics - The Science and Technology of Ionic Motion", Springer, Heidelberg [17]

1990 Founder and Editor-in-Chief of ISSI letters (ISSN 0937-5961) [18]

Co-Editor of Applied Physics A

Editorial Board Member of (a.o.) European Journal of Solid State and Inorganic Chemistry, Journal of Solid-State Electrochemistry, Energy and Environmental Science,...

Research

Solid State Electrochemical Methods for the determination of kinetic, thermodynamic and phase equilibria data of solids (e.g., GITT), Application to magnetic, superconducting, electrode materials,..., Minority charge carriers of solid electrolytes (conductivities and separation into mobilities and concentrations , construction of Brouwer spectrometer), Fast Solid Electrodes (FSEs with liquid like diffusion of lithium), Solid electrolytes for lithium ions with stabilities against elemental lithium and with high decomposition voltages (e,g., cubic garnets, LLZO), Expanding the use of solid electrolytes for chermical sensors (type III through mixed conducting intermediate phases), Intermediate temperature oxide ion and proton conductors for fuel cells, Electrochromic systems (SEA-single phase galvanic cells)

Laudations

R. Adelung, Würdigung von Prof. Dr. rer. nat. Werner Weppner zum 70. Geburtstag, Christiana Albertina 74, 67-68 (2012) [19]

E. Wachsman, V. Thangadurai, J. Nowotny, B. Scrosati, Professor Werner Weppner On the occasion of his 65th birthday, Ionics 13, 101-102 (2007) [20]

Selected Publications

Determination of the Kinetic Parameters of Mixed-Conducting Electrodes, and Application to the System Li3Sb, W. Weppner and R.A. Huggins, J. Electrochem. Soc. 124, 1569 - 1578 (1977)

Ionic Conductivity of Solid and Liquid LiAlCl4, W. Weppner and R.A. Huggins, J. Electrochem. Soc. 124, 35 - 38 (1977)

Electrochemical Transient Investigations of the Diffusion and Concentration of Electrons in Yttria Stabilized Zirconia - Solid Electrolytes, W. Weppner, Z. Naturforsch. 31a, 1336 - 1343 (1976)

Electrochemical Determination of Phase Diagrams and Thermodynamic Data of Multi-Component Systems, W. Weppner, Chen Li-chuan and W. Piekarczyk, Z. Naturforsch. 35a, 381 - 388 (1980)

Fast Ionic Lithium Conduction in Solid Lithium Nitride Chloride, P. Hartwig, W. Weppner and W. Wichelhaus, Mat. Res. Bull. 14, 493 - 498 (1979)

Vehicle Mechanismus, ein neues Modell zur Deutung der Leitfähigkeit schneller Protonenleiter, K.D. Kreuer, A. Rabenau and W. Weppner, Angew. Chem. 94, 224 - 225 (1982); Angew. Chem. Int. Ed. Engl. 21, 208 - 209 (1982)

Solid State Electrochemical Gas Sensors, W. Weppner, Sensors and Actuators 12, 107 - 119 (1987)

Kinetic Principles for New Types of Solid State Ionic Gas Sensors, B.Y. Liaw, J. Liu, A. Menne and W. Weppner, Solid State Ionics 53 - 56, 18 - 23 (1992)

In-Situ Formation of p-n Junctions in Semiconducting TiO2, M. Klingler and W. Weppner, Appl. Phys. A 59, 239 - 243 (1994)

Li9SiAlO8: A Lithium Ion Electrolyte for Voltages Above 5.4 V, B.J. Neudecker and W. Weppner, J. Electrochem. Soc. 143, 2198 - 2203 (1996)

Variation of the Oxygen Exchange Rate of Zirconia-Based Electrodes by Electrochemical Pretreatment, C. Schwandt and W. Weppner, Solid State Ionics 112, 229 – 236 (1998)

Evidence of Two-Phase Formation upon Lithium Insertion into the Li1.33Ti1.67O4 Spinel, S. Scharner, W. Weppner and P. Schmid-Beurmann, J. Electrochem. Soc. 146, 857 – 861 (1999)

Study of the Response of O2 Sensors Based on ZrO2, E.D. Tsagarakis and W. Weppner, in: Solid-State Ionic Devices: Ceramic Sensors (E.D. Wachsman et al.,, Eds.), Proc. Vol. 2000-32, Electrochem. Soc., Pennington, NJ, 2001, pp. 285 - 297

Synthesis, Structure and Ionic Conductivity of A‘[A2B3O10] (A‘ = Rb, Cs; A = Sr, Ba; B = Nb, Ta): New Members of Dion-Jacobson Type Layered Perovskites, V. Thangadurai, P. Schmid-Beurmann and W. Weppner, J. Solid State Chem. 158, 279 - 289 (2001)

SrSn1-xFexO3-d (0 < x < 1) Perovskites: A Novel Mixed Oxide Ion and Electronic Conductor, V. Thangadurai, P. Schmid-Beurmann and W. Weppner, Materials Research Bulletin 37, 599 - 604 (2002)

Novel Fast Lithium Ion Conduction in Garnet-Type Li5La3M2O12 (M = Nb, Ta), V. Thangadurai, H. Kaack and W. Weppner, J. Am. Ceram. Soc. 86, 437 - 440 (2003)

Subsurface Segregation of Yttria Stabilized Zirconia, M. de Ridder, R.G. van Welzenis, A.W. Denier van der Gon, H.H. Brongersma, S. Wulff, W.-F. Chu and W. Weppner, J. Appl. Phys. 92, 3056 – 3064 (2002)

Li6ALa2Nb2O12 (A = Ca, Sr, Ba): A New Class of Fast Lithium Ion Conductors with Garnet-Like Structure, V. Thangadurai and W. Weppner, J. Am. Ceram. Soc. 88, 411 – 418 (2005)

Crystal Structure Revision and Identification of Li+-Ion Migration Pathways in the Garnet-like Li5La3M2O12 (M = Nb, Ta) Oxides, V. Thangadurai, S. Adams and W. Weppner, Chemistry of Materials 16, 2998 – 3006 (2004)

Li6ALa2Ta2O12 (A = Sr, Ba): Novel Garnet-Like Oxides for Fast Lithium Ion Conduction, V. Thangadurai and W. Weppner, Adv. Funct. Mater. 15, 107 – 112 (2005)

Schnelle Lithiumionenleitung in granatartigem Li7La3Zr2O12, R. Murugan, V. Thangadurai and W. Weppner, Angew. Chem. 119, 7925 – 7928 (2007); Fast Lithium Ion Conduction in Garnet-type Li7La3Zr2O12, R. Murugan, V. Thangadurai and W. Weppner, Angew. Chem. Intl. Ed. 46, 7778 – 7781 (2007); Supporting inform.: http://www.wiley-vch.de/contents/jc_2002/2007/z701144_s.pdf

Crystal Chemistry and Stability of “Li7La3Zr2O12“ Garnet: A Fast Lithium-Ion Conductor, Ch.A. Geiger, E. Alekseev, B. Lazic, T. Armbruster, R. Langner, M. Fechtelkord, N. Kim, T. Pettke and W. Weppner, Inorg. Chem. 50, 1089 – 1097 (2011)

[1] https://drive.google.com/file/d/1Nce3zAMP_HTCvCaLGs-hRCZ5E8_m8vdk/view?usp=sharing

[2] https://drive.google.com/file/d/1ZS80Z-7yTaWr3K7auylgAUQm6zdxqKw8/view?usp=sharing

[3] https://drive.google.com/file/d/17Y3BTvfFWjQjkGBhAeLU0hlTmh_N8-Mi/view?usp=sharing

[4] https://drive.google.com/file/d/1LlEB4y8ROzBiL1v3NWcNE9CjR-Wfonex/view?usp=sharing

[5] https://drive.google.com/file/d/1CBgW-E0MXdMq7BcOPjF_pnUpdZrL1t9M/view?usp=sharing

[6] https://www.archivportal-d.de/objekte?facetValues%5B%5D=context%3DPYAWHE3ICGVOV2SVHYMV6LCUOZJY2BIS&query=Weppner

[7] https://drive.google.com/file/d/1W-mCkuAGF_ceTL8gNkBKbgShos6mStbH/view?usp=sharing

[8] https://drive.google.com/file/d/19iwBndK-04iXO2HCM2II01en6ieRK0vv/view?usp=sharing

[9] https://onlinelibrary.wiley.com/doi/10.1002/anie.200701144

[10] https://share.google/aimode/m1GD9oXf58jAJ99YC

[11] https://www.ionics.org/euroconferences-on-solid-state-ionics

[12] https://internationalsocietysolidstateionics.org/index.php/about