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Solution‐Based Processing of Graphene–Li 2 S Composite Cathodes for Lithium‐Ion and Lithium–Sulfur Batteries
Author(s) -
Wu Feixiang,
Lee Jung Tae,
Magasinski Alexandre,
Kim Hyea,
Yushin Gleb
Publication year - 2014
Publication title -
particle and particle systems characterization
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.877
H-Index - 56
eISSN - 1521-4117
pISSN - 0934-0866
DOI - 10.1002/ppsc.201300358
Subject(s) - polysulfide , graphene , cathode , materials science , electrolyte , dissolution , composite number , lithium (medication) , chemical engineering , conductivity , sulfur , inorganic chemistry , nanotechnology , composite material , chemistry , electrode , metallurgy , medicine , endocrinology , engineering
Nanostructured Li 2 S and graphene–Li 2 S composite cathodes are prepared via a versatile solution‐based method. Graphene improves the cathode conductivity, rate, and cycling performance of Li 2 S. Higher electrolyte molarity enhances cycle stability of the cathodes owing to reduced polysulfide dissolution and maintaining better mechanical properties of a PVDF binder.