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Multifunctional Chitosan–rGO Network Binder for Enhancing the Cycle Stability of Li–S Batteries
Author(s) -
Kim Soochan,
Cho Misuk,
Lee Youngkwan
Publication year - 2020
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.201907680
Subject(s) - graphene , materials science , chitosan , oxide , chemical engineering , lithium (medication) , energy storage , aqueous solution , nanotechnology , supercapacitor , electrochemistry , electrode , organic chemistry , engineering , medicine , power (physics) , chemistry , physics , quantum mechanics , endocrinology , metallurgy
Although Li–S batteries are currently receiving great interest, due to their high energy density and the low cost of sulfur, practical applications are still inhibited by capacity fading that is caused by various undesirable processes. In this study, a new multifunctional network binder composed of chitosan and reduced graphene oxide (rGO) is introduced to enhance the capacitive performance of Li–S batteries. Chitosan is reacted with graphene oxide in aqueous solution to produce a homogenous network, which effectively enhances the redox system by entrapping lithium polysulfides, reinforces the mechanical properties, and allows electrical conductivity through the binder system. Collaborative relationship‐based chitosan–rGO network binder allows noteworthy improvement in the capacity decay of 0.016% per cycle at 1 C for 1000 cycles.