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Sulfur‐Based Catholyte Solution with a Glass‐Ceramic Membrane for Li–S Batteries
Author(s) -
Wang Lina,
Zhao Yu,
Thomas Morgan L.,
Dutta Arghya,
Byon Hye Ryung
Publication year - 2016
Publication title -
chemelectrochem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.182
H-Index - 59
ISSN - 2196-0216
DOI - 10.1002/celc.201500342
Subject(s) - polysulfide , separator (oil production) , faraday efficiency , sulfur , dissolution , electrode , electrochemistry , sulfide , membrane , chemical engineering , chemistry , ceramic , inorganic chemistry , materials science , composite material , organic chemistry , electrolyte , biochemistry , physics , engineering , thermodynamics
Shuttling of soluble polysulfide species within electrodes is one of the most challenging issues in lithium–sulfur (Li–S) batteries. The resulting deposition of polysulfide species reduces the conductivity of the metallic Li electrode and the quantity of active material. Here, we demonstrate pronounced suppression of polysulfide shuttle using a sulfide‐impermeable glass‐ceramic membrane, which is employed as separator between the positive and negative electrodes. As a result, highly stable Li–S electrochemistry occurs in the sulfur‐dissolving tetrahydrofuran catholyte solution, which provides good capacity retention and Coulombic efficiency for cycling. This demonstration holds promise for practical next‐generation batteries with marked reversibility and the possibility to increase the energy density when equipped with a catholyte flow‐through mode.