Premium
A Sulfur‐layered Separator Enabling an Innovative Flexible Li S Battery without Integrating Elemental Sulfur in the Cathode
Author(s) -
Kang Jin Kyeong,
Park Jong Won,
Kang Jukyoung,
Kang Ji Hoon,
Jung Yongju
Publication year - 2019
Publication title -
bulletin of the korean chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.237
H-Index - 59
ISSN - 1229-5949
DOI - 10.1002/bkcs.11718
Subject(s) - separator (oil production) , sulfur , cathode , electrolyte , electrochemistry , battery (electricity) , lithium–sulfur battery , electrode , materials science , carbon fibers , chemistry , chemical engineering , inorganic chemistry , composite material , metallurgy , composite number , engineering , power (physics) , physics , quantum mechanics , thermodynamics
We present an innovative LiS battery concept for the potential realization of low‐cost wearable batteries. A novel LiS battery is constructed by employing a sulfur‐free carbon cathode and a sulfur‐layered separator fabricated by thermal evaporation at a temperature as low as 120°C. The cell exhibits superior performances compared with a control cell with a sulfur‐containing cathode, as all sulfur on the separator takes part in the electrochemical reactions. We reveal that all electrically isolated sulfur from the carbon cathode is successfully converted to polysulfides via the electrode reactions of sulfur molecules at the interface of the carbon surface and the electrolyte solution. Our new concept brings a paradigm shift in the rechargeable battery community.