Under a NASA-OAST sponsored program, JPL is developing ambient temperature secondary lithium cells for future spacecraft applications. Prior studies on experimental laboratory type Li-TiS2 cells yielded promising results in terms of cycle life and rate capability. To further access the performance of this cell, 5 A h engineering model cells were developed. Initially, baseline cells were designed and fabricated. Each cell had 15 cathodes and 16 anodes and the ratio of anode to cathode capacity is 6:1. A solution of 1.5 M LiAsF6 in 2-MeTHF was used as the electrolyte. Cells were evaluated for their cycle life at C/2 and C/5 discharge rates and 100% depth of discharge. The cells were cycles between voltage limits 1.7 and 2.8 V. The rate of charge in all cases is C/10. The results obtained indicate that cells can operate at C/10-C/2 discharge rates and have an initial energy density of 70 W h kg-1. Cells delivered more than 100 cycles at C/2 discharge rate. The authors describe the cell design, the test program, and the results obtained


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    Titel :

    Development of ambient temperature secondary lithium cells


    Weitere Titelangaben:

    Entwicklung von Lithium-Sekundaerbatterien fuer die Umgebungstemperatur in der Raumfahrt


    Beteiligte:
    Subbarao, S. (Autor:in) / Shen, D.H. (Autor:in) / Dawson, S. (Autor:in) / Deligiannis, F. (Autor:in) / Taraszkiewicz, J. (Autor:in) / Halpert, G. (Autor:in)


    Erscheinungsdatum :

    1988


    Format / Umfang :

    7 Seiten, 3 Quellen



    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Print


    Sprache :

    Englisch




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