“Lithionics” – On the Design of Lithium Oxides for Novel Neuromorphic Computing Functions

When and Where

May 23, 2022
10:30am - 11:00am

EQ11-Virtual

Presenter

Jennifer Rupp

Co-Author(s)

Jennifer Rupp¹

Technical University of Munich¹

Abstract

Jennifer Rupp¹

Technical University of Munich¹

Next generation of energy storage may largely benefit from fast Li+ ceramic electrolyte conductors to allow for safe and efficient batteries. With recent discoveries in thin film processing solid state lithium ion conductors, such as Li-garnets and LIPON or LiSICON-based solids, have been recently considered as candidate materials not only for next-generation solid-state batteries but also for neuromorphic computing via memristors owing to the fast ionic transport in the solid state electrolyte. In the first part of this talk, we review various Li solid-state conductor materials and reflect on opportunities of thin film processing, being a requirement to define precisely the Lithium stoichiometries and related electronic state changes for transition metal ions, miniaturize the device, and reach high energy/information densities for neuromorphic computation via resistive switching. In the second part, we focus on Li-film processing and controlling Lithium stoichiometries to reach fast conductive phases for Li garnets and Li titanates as solid state battery components, and memristive neuromorphic computing units. Insights on structure-phase-transport interaction and implications on performances will be exemplified for energy storage aiming high energy densities, and modulations of synaptic artificial weights through lithium induced metal-to-insulator transitions in lithium titanate memristors. References for further read: 1. Balaish*, M.; Gonzalez-Rosillo*, J.C.; Kim, K.J.; Zhu, Y.; Hood, Z.D.; Rupp, J.L.M., “Processing thin but robust electrolytes for solid state batteries”, Nature Energy, 6, 227–239 (2021) 2. Zhu, Y.; Gonzalez-Rosillo, J.C.; Balaish, M.; Hood, Z.D.; Kim, K.J.; Rupp, J.L.M., “Lithium-film ceramics for solid state lithionic devices”, Nature Review Materials, 6, 313–331 (2020) 4. Kim K.J.; Rupp, J.L.M., “All ceramic cathode composite design and manufacturing towards low interfacial resistance for garnet-based solid state lithium batteries”, Energy & Environmental Science, 13, 4930-4945 (2020) 5. Kim, K.J.; Henricher, J.J.; Rupp, J.L.M., “High energy and long cycles”, Nature Energy, 5, 278, (2020) 6. Gonzalez-Rosillo, J.C.; Balaish, M.; Hood, Z.D.; Nadkarni, N.; Fraggedakis, D.; Kim, K.J.; Mullin, K.M.; Pfenninger, R.; Bazant, M.Z.; Rupp, J.L.M., “Lithium-Battery Anode Gains Additional Functionality for Neuromorphic Computing through Metal-Insulator Phase Separation”, Advanced Materials, 1907465, (2020)* 7. Mahbub, R.; Huang, K.; Jensen, Z.; Hood, Z.D.; Rupp, J.L.M.; Olivetti, E.A., “Text Mining for Processing Conditions of Solid State Battery Electrolytes”, Electrochemistry Communications, 121, 106860 (2020) 8. K.J. Kim*, M. Balaish*, M. Wadaguchi, L. Kong, J.L.M Rupp “Solid State Li–Metal Batteries: Challenges and Horizons of Oxide and Sulfide Solid Electrolytes and Their Interfaces”, Advanced Energy Materials, 202002689 (2020) 9. R. Pfenninger, M. Struzik, I. Garbayo, E. Stilp, J.L.M. Rupp “A low ride on processing temperature for fast lithium conduction in garnet solid state battery films”, Nature Energy, 4, 475–4832019 (2019)