New Fluorinated Separators for High Power Lithium-Ion Batteries

Abstract

The development of high power Li-ion batteries is of great relevance for hybrid electric vehicles (HEVs) technology. Electrochemical performance of high voltage cells operating with new fluorinated separators and ethylene carbonate - dimethyl carbonate 1M LiPF 6 electrolyte with additives was evaluated according to the FreedomCAR DOE protocols to simulate the dynamic functioning of batteries in plug-in HEVs. The results compared to those of cells with commercial separators evidence the beneficial impact of the new fluorinated separators. Acknowledgments Work partially funded by the European FP7 (AMELIE Project n.265910). AMELIE Partners CEA, KNUTD and SOLVAY are acknowledged for providing some cell components and for useful discussions.