Solid state lithium-ion batteries promise exceptional reliability, on-chip integration and a better safety profile than those using liquid electrolytes, yet these systems remain costly and generally exhibit inadequate high-power performance. Poor ionic conductivities in solid electrolytes and high charge transfer resistances at electrode-electrolyte interfaces are commonly cited limitations to these cells. Epitaxial modification of electrode-electrolyte interfaces, however, can reduce charge transfer resistances, promoting fast ion exchange between functional components. New insights into interface modification in lithium-ion solid state batteries using pulsed laser deposition (PLD) will be presented including the usefulness of local electrolyte doping and metallic interlayers.

Sandia National Laboratories is a multi-program laboratory managed and operated by Sandia Corporation, a wholly owned subsidiary of Lockheed Martin Corporation, for the U.S. Department of Energy’s National Nuclear Security Administration under contract DE-AC04-94AL85000.