Abstract
The electrochemical properties and thermal stabilities of a new positive electrode material for Li-ion batteries, , were investigated over a wide potential window. This electrode material was synthesized via a coprecipitation method. X-ray diffraction studies indicated that the synthesized material crystallized into an layered structure . The positive electrode has a discharge capacity of in the voltage range of . This high capacity was retained throughout cycling. The thermal stability of was measured by differential thermal calorimetry and found to be comparable to that of . This positive electrode material was also characterized in a full cell configuration (graphite negative electrode) by the hybrid pulse power characterization tests following the FreedomCAR battery test manual for plug-in hybrid electric vehicles (PHEVs). The pulse power capability and available energy met the goals for PHEVs.
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