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A New Concept of a Porous Carbon Interlayer Impregnated with Sulfur for Long‐Life and High‐Energy LiS Batteries
Author(s) -
Park Jong Won,
Kang Jin Kyeong,
Koh Jeong Yoon,
Kim Seok,
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.11633
Subject(s) - polysulfide , cathode , sulfur , anode , materials science , mesoporous material , porosity , carbon fibers , diffusion , chemical engineering , nanotechnology , composite material , chemistry , electrode , catalysis , organic chemistry , composite number , metallurgy , electrolyte , engineering , thermodynamics , physics
We present a new interlayer concept for the realization of high‐energy‐density LiS batteries. Disordered mesoporous carbons replicated by silica nanoparticles were partially filled with sulfur via a melt‐diffusion method. Sulfur‐impregnated disordered mesoporous carbon (DMC‐S) composites were used as an interlayer between a cathode and anode to provide additional active materials for a LiS cell. The LiS cell with the DMC‐S interlayer exhibited an approximately two‐fold increase in areal capacity compared with the control cell without an interlayer. DMC‐S composites offer the unique advantage of acting as a porous framework to accommodate active materials and suppress polysulfide diffusion. We propose that this new approach provides a viable path for the development of LiS batteries with a high‐energy density and excellent cycling stability.