High-power lithium-ion batteries are promising alternatives to the nickel metal hydride (Ni-MH) batteries currently being used for energy storage in hybrid electric vehicles (HEVs). The use of lithium-ion batteries in the HEV systems is currently limited by their calendar-life performance, thermal abuse characteristics, and cost. To address these barriers, ANL investigated high-power battery systems based on Li(1+x) (Ni(.33)Co(.33)Mn(.33))(1-x)O2 active materials that could offer low cost, long cycle and calendar life, and inherent safety. Promising results are achieved by adding 10% excess lithium to the cathode. A figure shows calendar life test results at 55 deg C in comparison to those of a competitive material. One observation is that the new material exhibits a leveling off of area specific impedance after some period of time and cycling.


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    Title :

    Advanced cathode materials for high power applications


    Contributors:
    Amine, K. (author) / Belharouak, I. (author) / Kang, S.H. (author) / Liu, J. (author) / Vissers, D. (author) / Henriksen, G. (author)


    Publication date :

    2006


    Size :

    1 Seite, 3 Quellen


    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English





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