Journal article

Authors list: Riegger, Luise M; Mittelsdorf, Sophie; Fuchs, Till; Rueß, Raffael; Richter, Felix H; Janek, Jürgen

Publication year: 2023

Pages: 5091-5099

Journal: Chemistry of Materials

Volume number: 35

Issue number: 13

ISSN: 0897-4756

eISSN: 1520-5002

DOI Link: https://doi.org/10.1021/acs.chemmater.3c00676

Publisher: American Chemical Society

Abstract: 
Argyrodite-basedsolid electrolytes (SEs) are promising candidatesfor application in solid-state batteries (SSBs) due to their highionic conductivity and mechanical malleability. However, they arereduced by lithium and form interphases when they are in contact witha lithium metal anode, which are needed to construct cells with highenergy density. If the interphase is electronically insulating, aso-called solid electrolyte interphase (SEI) is formed that can protectthe solid electrolyte from further degradation and grows only slowly.Careful evaluation of individual lithium metal anode|SE interfacereactions and their growth kinetics is necessary to advance the conceptof lithium metal batteries. Here, the interphase growth in symmetricLi|Li6PS5Cl|Li cells is studied quantitativelyby impedance spectroscopy using a three-electrode cell setup. Unidirectionalplating experiments show that the three-electrode cell is well suitedto study the SEI evolution. Passivated and freshly prepared lithiumfoils are investigated, and the impedance evolution is studied toexplore the influence of the lithium metal anode surface on SEI growth.The study reveals that an inherent passivation layer, present on mostcommercial lithium foils, influences the rate of SEI formation andcauses high internal cell resistance. The lithium reservoir-free anode("anode-free concept") is recommended to overcome theissues caused by chemically poorly defined lithium foil surfaces.

Harvard Citation style: Riegger, L., Mittelsdorf, S., Fuchs, T., Rueß, R., Richter, F. and Janek, J. (2023) Evolution of the Interphase between Argyrodite-Based Solid Electrolytes and the Lithium Metal Anode─The Kinetics of Solid Electrolyte Interphase Growth, Chemistry of Materials, 35(13), pp. 5091-5099. https://doi.org/10.1021/acs.chemmater.3c00676

APA Citation style: Riegger, L., Mittelsdorf, S., Fuchs, T., Rueß, R., Richter, F., & Janek, J. (2023). Evolution of the Interphase between Argyrodite-Based Solid Electrolytes and the Lithium Metal Anode─The Kinetics of Solid Electrolyte Interphase Growth. Chemistry of Materials. 35(13), 5091-5099. https://doi.org/10.1021/acs.chemmater.3c00676