Solid Electrolytes

_{© Image courtesy of Verena Langowski (MPI for Solid State Research and Ludwig-Maximilians-Universität München)}

Ion dynamics and transport in solids are at the heart of many applications ranging from sensing to electrochemical energy storage. Solid ion conductors, also known as solid electrolytes (SEs), are critical components in all-solid-state batteries, which potentially offer higher safety, paired with higher power and energy densities compared to commercial lithium ion batteries based on liquid electrolytes. In our department we develop new ultrafast, earth-abundant SEs for next-generation lithium and sodium solid-state batteries. We explore how ions move through solids and how we can rationally influence their transport properties by chemical design and microstructure engineering to develop high-performance batteries that are both safe and sustainable.

 

Key Publications

How Certain Are the Reported Ionic Conductivities of Thiophosphate-Based Solid Electrolytes? An Interlaboratory Study
S. Ohno, T. Bernges, J. Buchheim, M. Duchardt, A.-K. Hatz, M.A. Kraft, H. Kwak, A.L. Santhosha, Z. Liu, N. Minafra, F. Tsuji, A. Sakuda, R. Schlem, S. Xiong, Z. Zhang, P. Adelhelm, H. Chen, A. Hayashi, Y. Seok Jung, B.V. Lotsch, B. Roling, N.M. Vargas-Barbosa, W.G. Zeier
ACS Energy Lett. 2020, 5, 910–915. Article

Finding the Right Blend: Interplay Between Structure and Sodium Ion Conductivity in the System Na₅AlS₄–Na₄SiS₄
S. Harm, A.-K. Hatz, C. Schneider, C. Hoefer, C. Hoch, B.V. Lotsch
Front. Chem. 2020, 8:90. Article

A Lesson learned from NMR: characterization and ionic conductivity of LGPS-like Li₇SiPS₈
S. Harm, A.-K. Hatz, I. Moudrakovski, R. Eger, A. Kuhn, C. Hoch, B.V. Lotsch
Chem. Mater. 2019, 31, 1280–1288. Article

Relevance of solid electrolytes for Li-based batteries: A realistic view
B.V. Lotsch, J. Maier
J. Electroceram. 2017, 38, 128–141. Article

Li_0.6[Li_0.2Sn_0.8S₂] – A layered lithium superionic conductor
T. Holzmann, L. Schoop, M.N. Ali, I. Moudrakovski, G. Gregori, J. Maier, R.J. Cava, B.V. Lotsch
Energy Environ. Sci. 2016, 9, 2578–2585. Article

A new ultrafast superionic Li-conductor: Ion dynamics in Li₁₁Si₂PS₁₂ and comparison with other tetragonal LGPS-type electrolytes
A. Kuhn, O. Gerbig, C. Zhu, F. Falkenberg, J. Maier, B.V. Lotsch
Phys. Chem. Chem. Phys. 2014, 16, 14669−14674. Article

Tetragonal Li₁₀GeP₂S₁₂ and Li₇GePS₈ – exploring the Li ion dynamics in LGPS Li electrolytes
A. Kuhn, V. Duppel and B.V. Lotsch
Energy Environ. Sci. 2013, 6, 3548–3552. Article