Journal
SOLID STATE IONICS
Volume 256, Issue -, Pages 97-102Publisher
ELSEVIER
DOI: 10.1016/j.ssi.2013.12.045
Keywords
Sulfur; Positive electrode materials; Li/S cell; Lithium battery; All-solid-state battery
Categories
Funding
- Japan Science and Technology Agency
- Ministry of Education, Culture, Sports and Technology of Japan
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Sulfur-carbon composites were investigated as positive electrode materials for all-solid-state lithium ion batteries with an inorganic solid electrolyte (amorphous Li3PS4). The elemental sulfur was mixed with Vapor-Grown Carbon Fiber (VGCF) and with the solid electrolyte (amorphous Li3PS4) by using high-energy ball-milling process. The obtained sulfur-VGVF-solid electrolyte composite was used as positive electrode materials of the all-solidstate battery. The composite showed good electrochemical properties as positive electrode materials. The capacity that was calculated on the base of the weight of sulfur was about 1300 mAhg(-1) at room temperature, when the all-solid-state battery was discharged and charged in the voltage range of 0.9 to 2.6 V at a constant current density of 0.1 mAcm(-2). The battery kept the capacity more than 1200 mAhg(-1) even after 50 discharge-charge cycles. (C) 2014 Elsevier B.V. All rights reserved.
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