Journal
SOLID STATE IONICS
Volume 262, Issue -, Pages 179-182Publisher
ELSEVIER
DOI: 10.1016/j.ssi.2013.10.028
Keywords
Lithium borohydride; Solid electrolyte; All-solid-state battery; Pulsed laser deposition; Lithium phosphate
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All-solid-state lithium batteries using LiBH4 electrolyte and LiCoO2 cathode were prepared, and the effect of the intermediate layers between LiBH4 and LiCoO2 was demonstrated by electrochemical measurement. Li3PO4, LiNbO3 and Al2O3 thin films with smooth surfaces deposited by PLD were utilized for the intermediate layer. With the intermediate layer, the interfacial resistance between LiBH4 and LiCoO2 decreased by as much as 3 orders of magnitude by suppressing the interfacial reaction between LiBH4 and LiCoO2. A 10-25 nm-thick Li3PO4 intermediate layer was found to be the most effective to suppress the interfacial resistance. (C) 2013 Elsevier B.V. All rights reserved.
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