Challenges in Lithium Metal Anodes for Solid-State Batteries

In this Perspective, we highlight recent progress and challenges related to the integration of lithium metal anodes in solid-state batteries. While prior reports have suggested that solid electrolytes may be impermeable to lithium metal, this hypothesis has been disproven under a variety of electrolyte compositions and cycling conditions. Herein, we describe the mechanistic origins and importance of lithium filament growth and interphase formation in inorganic and organic solid electrolytes. Multimodal techniques that combine real and reciprocal space imaging and modeling will be necessary to fully understand nonequilibrium dynamics at these buried interfaces. Currently, most studies on lithium electrode…

• NS
  National Science Foundation

  Awards: 1805656, 1847029
• RC
  Research Corporation for Scientific Advancement
• AR
  Advanced Research Projects Agency - Energy

  Awards: DE-AR0000775, DE-AR0000774
• OO
  Office of Energy Efficiency and Renewable Energy
• DO
  Division of Chemical, Bioengineering, Environmental, and Transport Systems

  Awards: 1847029, 1805656
• BE
  Basic Energy Sciences