Safety is a key concern for a high-power energy storage system such as will be required in a hybrid vehicle. Present lithium-ion technology, which uses a carbon/graphite negative electrode, lacks inherent safety for two main reasons: (1) carbon/graphite intercalates lithium at near lithium potential; and (2) there is no end-of-charge indicator in the voltage profile that can signal the onset of catastrophic oxygen evolution from the cathode (LiCoO2). Their approach to solving these safety/life problems is to replace the graphite/carbon negative electrode with an electrode that exhibits stronger two-phase behavior further away from lithium potential, such as Li4Ti5O12. Cycle-life and pulse-power capability data are presented in accordance with the Partnership for a New Generation of Vehicles (PNGV) test procedures, as well as a full-scale design based on a spreadsheet model.


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    Title :

    Development of a high-power lithium-ion battery


    Contributors:
    Jansen, A.N. (author) / Kahaian, A.J. (author) / Kepler, K.D. (author) / Nelson, P.A. (author) / Amine, K. (author) / Dees, D.W. (author) / Vissers, D.R. (author) / Thackeray, M.M. (author)


    Publication date :

    1999


    Size :

    4 Seiten, 3 Quellen




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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