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Carbon‐Based Anodes for Lithium Sulfur Full Cells with High Cycle Stability
Author(s) -
Brückner Jan,
Thieme Sören,
BöttgerHiller Falko,
Bauer Ingolf,
Grossmann Hannah Tamara,
Strubel Patrick,
Althues Holger,
Spange Stefan,
Kaskel Stefan
Publication year - 2014
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/adfm.201302169
Subject(s) - faraday efficiency , electrolyte , anode , materials science , sulfur , carbon fibers , lithium (medication) , battery (electricity) , cathode , lithium–sulfur battery , lithium metal , inorganic chemistry , chemical engineering , electrode , metallurgy , chemistry , composite material , medicine , power (physics) , physics , composite number , engineering , endocrinology , quantum mechanics
The lithium sulfur battery system has been studied since the late 1970s and has seen renewed interest in recent years. However, even after three decades of intensive research, prolonged cycling can only be achieved when a large excess of electrolyte and lithium is used. Here, for the first time, a balanced and stable lithium sulfur full cell is demonstrated with silicon–carbon as well as all‐carbon anodes. More than 1000 cycles, a specific capacity up to 1470 mAh g −1 sulfur (720 mAh g −1 cathode ), and a high coulombic efficiency of over 99% even with a low amount of electrolyte are achieved. The alternative anodes do not suffer from electrolyte depletion, which is found to be the main cause of cell failure when using metallic lithium anodes.