According to EPA:
EPA's Office of Pollution Prevention and Toxics and Office of Research and Development (ORD) are pleased to announce that the draft final report for the life-cycle assessment (LCA) conducted by the Design for the Environment (DfE)/ORD Li-ion Batteries and Nanotechnology Partnership has been posted on EPA’s DfE Program web site for a 60-day public comment period, at http://epa.gov/dfe/pubs/projects/lbnp/index.htm. The LCA results for advanced batteries used in plug-in hybrid and electric vehicles are expected to help promote the responsible development of these emerging energy systems, including nanotechnology innovations, leading to reduced overall environmental impacts and the reduced use and release of more toxic materials. The LCA study identified key materials and processes within the batteries’ life cycles that are likely to pose the greatest environmental impacts, including occupational and public toxicity impacts, which will help the Li-ion battery industry to identify environmentally sound process, material, and design choices. The partnership included battery manufacturers, suppliers, and recyclers, as well as representatives from academia, trade and research institutions, and the Department of Energy's Argonne National Laboratory.