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Carbonized Eggshell Membrane as a Natural Polysulfide Reservoir for Highly Reversible Li‐S Batteries
Author(s) -
Chung ShengHeng,
Manthiram Arumugam
Publication year - 2014
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201304365
Subject(s) - polysulfide , materials science , sulfur , carbonization , electrochemistry , chemical engineering , cathode , membrane , nanotechnology , electrode , chemistry , electrolyte , engineering , composite material , electrical engineering , metallurgy , scanning electron microscope , biochemistry
Carbonized sucrose‐coated eggshell membranes (CSEMs) consisting of natural micropores function well as a polysulfide reservoir in Li/dissolved polysulfide cells. The bottom CSEM current collector encapsulates the active material, while the upper CSEM inhibitor intercepts the migrating polysulfides. This design with CSEM allows the dissolved polysulfides to be localized and the electrochemical reactions within the cathode region to be stabilized, resulting in high discharge capacity, long‐term cycle stability, and high sulfur loading.