Journal
JOURNAL OF POWER SOURCES
Volume 263, Issue -, Pages 141-144Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpowsour.2014.04.032
Keywords
All-solid-state battery; Lithium-sulfur battery; Activation of sulfur; Rate performance; High sulfur content
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Charge-discharge performance of all-solid-state Li/S batteries using several solid electrolytes to enhance energy density is investigated at 25 C. The sulfur content in the positive composite electrode is 50 wt%. A correlation between the P/S ratio in a solid electrolyte and the reactivity of sulfur is observed. The capacity of a positive composite electrode using a Li1.5PS3.3(60Li(2)S-40P(2)S(5)(mol%)} electrolyte is 1096 mAh g(-1) under 6.4 mA cm(-2) at 25 degrees C. This value is much higher than the capacity for a Li4.0P-S-4.5(80Li(2)S-20P(2)S(5)} electrolyte (565 mAh g-1), although the ionic conductivity of Li1.5PS3.3 was lower than Li4.0PS4.5 (2 x 10(-5) S cm(-1), 5 x 10(-4) S cm(-1), respectively). (C) 2014 Elsevier B.V. All rights reserved.
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