Journal
JOURNAL OF POWER SOURCES
Volume 139, Issue 1-2, Pages 269-273Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpowsour.2004.07.002
Keywords
lithium secondary battery; lithium; sulfur; polymer electrolyte; capacity fade
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Electrochemical properties and performance of lithium/polymer electrolyte/composite sulfur cells are presented. The composite sulfur cathode prepared by two ways were characterized and compared by X-ray diffraction (XRD), thermogravimetry (TG), differential thermoanalysis (DTA) and scanning electron microscopy (SEM). The all-solid-state Li/S battery operated at 75degreesC with P(EO)(20)Li(CF3SO2)(2)N-10wt.%-gamma-LiAlO2 as electrolyte exhibited an average capacity of 290 mAh g(-1) for the sulfur melted together with poly(ethylene oxide) (PEO) during 50 cycles. The mechanisms for capacity degradation of the Li/S polymer battery were discussed. (C) 2004 Elsevier B.V. All rights reserved.
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