Characterization of Li2S–P2S5 glass-ceramics as a solid electrolyte for lithium secondary batteries

Glass-ceramic solid electrolytes were prepared by crystallization of the mechanically milled 80Li2S*20P2S5 glass and their electrical and electrochemical properties were examined. The glass-ceramics exhibited favorable features as a solid electrolyte for lithium secondary batteries such as high ambi...

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Bibliographic Details
Published in:Solid state ionics 2004-11, Vol.175 (1-4), p.683-686
Main Authors: Hayashi, Akitoshi, Hama, Shigenori, Mizuno, Fuminori, Tadanaga, Kiyoharu, Minami, Tsutomu, Tatsumisago, Masahiro
Format: Article
Language:English
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Summary:Glass-ceramic solid electrolytes were prepared by crystallization of the mechanically milled 80Li2S*20P2S5 glass and their electrical and electrochemical properties were examined. The glass-ceramics exhibited favorable features as a solid electrolyte for lithium secondary batteries such as high ambient temperature conductivity of 7.2X10-4 S cm-1, unity of lithium transport number, wide electrochemical window, and high stability against lithium metal. All-solid-state cells In/80Li2S*20P2S5 glass-ceramic/LiCoO2 worked as lithium secondary batteries at room temperature and maintained large discharge capacity of about 100 mA h g-1 up to the 200th cycle with the charge-discharge efficiency of 100%.
ISSN:0167-2738
DOI:10.1016/j.ssi.2004.08.036