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Two recent workshops sponsored by the US Department of Energy are reviewed. The first focused on phenomena that limit performance of batteries, on understanding interfacial phenomena, on how to make stable interfaces, and on the role nanomaterials can play in batteries. The second provided a critical review of the current status of vehicle simulation models, battery performance models, and models that describe fundamental process occurring in batteries. The paper includes synopses of the papers presented as well as discussion of the conclusions and recommendations from the workshops.

This paper presents a summary of a recent conference entitled Advanced Lithium Solid State Batteries Workshop that was held on July 13–15, 1999. The conference was sponsored by the Department of Energy's Office of Advanced Automotive Technologies, and the Office of Basic Energy Sciences' (BES) Division of Chemical Sciences. This paper presents a summary of the results and recommendations from the conference, including: A review of current research on solid state electrolytes and their interfaces with an emphasis on both applied and basic studies. The research includes theoretical studies of solid polymer electrolytes (SPEs), lithium ion transport in SPEs, and simulations of the electrolyte–cathode interface. Experimental results are presented on ion transport phenomena in SPEs (NMR and X–ray) and mechanical stresses on electrodes, among other topics.