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Lithium Metal Growth Kinetics on LLZO Garnet Type Solid Electrolytes – Operando Study of Lithium Deposition and Dendrite Growth

39 Pages Posted: 2 May 2019 Sneak Peek Status: Published

See all articles by Thorben Krauskopf

Thorben Krauskopf

University of Giessen - Institute of Physical Chemistry

Rabea Dippel

University of Giessen - Institute of Physical Chemistry

Hannah Hartmann

University of Giessen - Institute of Physical Chemistry

Klaus Peppler

University of Giessen - Institute of Physical Chemistry

Boris Mogwitz

University of Giessen - Institute of Physical Chemistry

Felix H. Richter

University of Giessen - Institute of Physical Chemistry

Wolfgang G. Zeier

University of Giessen - Institute of Physical Chemistry

Jürgen Janek

University of Giessen - Institute of Physical Chemistry

More...

Abstract

Li₇La₃Zr₂O₁₂ (LLZO) based garnet materials are recently investigated as suitable electrolytes for solid state batteries with lithium metal electrode. Unfortunately, lithium metal penetration through polycrystalline garnet type electrolytes limits the electric current density during cell charging. In this study, we introduce an electrochemical operando approach that is a well suited to get insights into the early stage of lithium metal penetration that was yet only accessible with very elaborate neutron measurements. Combined with in situ as well as ex situ electron microscopic techniques, we investigate the morphological instability of the lithium metal anode on garnet type solid electrolytes under cathodic load and demonstrate the interrelationship between microkinetic aspects and lithium penetration susceptibility.

Suggested Citation

Krauskopf, Thorben and Dippel, Rabea and Hartmann, Hannah and Peppler, Klaus and Mogwitz, Boris and Richter, Felix H. and Zeier, Wolfgang G. and Janek, Jürgen, Lithium Metal Growth Kinetics on LLZO Garnet Type Solid Electrolytes – Operando Study of Lithium Deposition and Dendrite Growth (April 30, 2019). Available at SSRN: https://ssrn.com/abstract=3380259 or http://dx.doi.org/10.2139/ssrn.3380259
This is a paper under consideration at Cell Press and has not been peer-reviewed.

Thorben Krauskopf

University of Giessen - Institute of Physical Chemistry ( email )

Germany

Rabea Dippel

University of Giessen - Institute of Physical Chemistry

Germany

Hannah Hartmann

University of Giessen - Institute of Physical Chemistry

Germany

Klaus Peppler

University of Giessen - Institute of Physical Chemistry

Germany

Boris Mogwitz

University of Giessen - Institute of Physical Chemistry

Germany

Felix H. Richter

University of Giessen - Institute of Physical Chemistry

Germany

Wolfgang G. Zeier

University of Giessen - Institute of Physical Chemistry

Germany

Jürgen Janek (Contact Author)

University of Giessen - Institute of Physical Chemistry ( email )

Germany

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