Surface Modification of Sulfur Electrodes by Chemically Anchored Cross-Linked Polymer Coating for Lithium–Sulfur Batteries

Lithium–sulfur batteries suffer from severe self-discharge due to polysulfide dissolution into electrolytes. In this work, a chemically anchored polymer-coated (CAPC) sulfur electrode was prepared, through chemical bonding by coordinated Cu ions and cross-linking, to improve cyclability for Li/S bat...

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Published inACS applied materials & interfaces Vol. 7; no. 3; pp. 1401 - 1405
Main Authors Lim, Sanghyun, Lilly Thankamony, Roshni, Yim, Taeeun, Chu, Hodong, Kim, Young-Jun, Mun, Junyoung, Kim, Tae-Hyun
Format Journal Article
LanguageEnglish
Published United States American Chemical Society 28.01.2015
Subjects
batteries
chemical bonding
coatings
copper
crosslinking
electrodes
ions
polymers
sulfur
sulfur electrode
lithium−sulfur batteries
polysulfide dissolution
Cu-anchoring
polymer coating
chemical bonding
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Summary:Lithium–sulfur batteries suffer from severe self-discharge due to polysulfide dissolution into electrolytes. In this work, a chemically anchored polymer-coated (CAPC) sulfur electrode was prepared, through chemical bonding by coordinated Cu ions and cross-linking, to improve cyclability for Li/S batteries. This electrode retained specific capacities greater than 665 mAh g–1 at high current density of 3.35 A g–1 (2C rate) after 100 cycles with an excellent Coulombic efficiency of 100%.
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ISSN:1944-8244
1944-8252
1944-8252
DOI:10.1021/am508528p