Journal
ELECTROCHIMICA ACTA
Volume 258, Issue -, Pages 110-115Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2017.09.156
Keywords
Lithium-sulfur batteries; All-solid-state batteries; Composite electrodes; High-temperature milling
Categories
Funding
- Advanced Low Carbon Technology Research and Development Program
- Specially Promoted Research for Innovative Next Generation Batteries (ALCA-SPRING) of the Japan Science and Technology Agency (JST)
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Composite sulfur electrodes are prepared by high-temperature mechanical milling (443 K) for use in all-solid-state lithium-sulfur batteries, and their structures and electrochemical properties are investigated. Composites comprising sulfur, acetylene black, and a Li3.25Ge0.25P0.75S4 solid electrolyte are fabricated by planetary ball milling using a temperature-controlled system. The composite electrode exhibits a high discharge capacity of greater than 1200 mAh g(-1) and a good cycle capability. As a result of high-temperature milling, composites are formed, incorporating novel structural units from the reaction between sulfur and the solid electrolyte, along with their intrinsic characteristics. Hence, high-temperature milling demonstrates promise for the fabrication of a composite electrode exhibiting high, reversible electrochemical activities for use in an all-solid-state lithium-sulfur battery. (c) 2017 Elsevier Ltd. All rights reserved.
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