Transport and Mechanical Properties of Pure and Composite Solid Lithium Electrolytes

Nancy J. Dudney(1), Wyatt E. Tenhaeff(1), Sergiy Kalnaus(1), Adrian S. Sabau(1), Erik G. Herbert(2), Kunlun Hong(3)
 (1)Material Science and Technology Division, Oak Ridge National Laboratory
(2)Department of Material Science, University of Tennessee
(3)Center for Nanophase Materials, Oak Ridge National Laboratory

Solid electrolyte materials are investigated for lithium and Li-ion batteries with both planar and 3D architectures.  For lithium metal batteries, it may be desirable to use multiple electrolytes fabricated as a thin-film laminate or dispersed composite electrolyte in order to provide adequate ion transport, electrochemical compatibility, and robust mechanical properties to stabilize the lithium interface and prevent dendrites.  Results of studies of both bulk and interfacial properties for composite electrolytes will be reported for ceramic and polymeric electrolytes.  Simulation methods have been developed to provide a means to extrapolate to optimized architectures and compositions.

Acknowledgement: Research has been supported by the Laboratory Directed Research and Development Program of Oak Ridge National Laboratory, and by the Assistant Secretary for Energy Efficiency and Renewable Energy, Office of Vehicle Technologies of the U.S. Department of Energy.