Premium
Defect Control in the Synthesis of 2 D MoS 2 Nanosheets: Polysulfide Trapping in Composite Sulfur Cathodes for Li–S Batteries
Author(s) -
Abraham Alyson,
Wang Lei,
Quilty Calvin D.,
Lutz Diana M.,
McCarthy Alison H.,
Tang Christopher R.,
Dunkin Mikaela R.,
Housel Lisa M.,
Takeuchi Esther S.,
Marschilok Amy C.,
Takeuchi Kenneth J.
Publication year - 2020
Publication title -
chemsuschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.412
H-Index - 157
eISSN - 1864-564X
pISSN - 1864-5631
DOI - 10.1002/cssc.201903028
Subject(s) - polysulfide , cathode , materials science , sulfur , electrolyte , electrochemistry , battery (electricity) , dissolution , composite number , lithium–sulfur battery , chemical engineering , nanotechnology , chemistry , electrode , composite material , metallurgy , power (physics) , physics , quantum mechanics , engineering
Abstract One of the inherent challenges with Li–S batteries is polysulfide dissolution, in which soluble polysulfide species can contribute to the active material loss from the cathode and undergo shuttling reactions inhibiting the ability to effectively charge the battery. Prior theoretical studies have proposed the possible benefit of defective 2 D MoS 2 materials as polysulfide trapping agents. Herein the synthesis and thorough characterization of hydrothermally prepared MoS 2 nanosheets that vary in layer number, morphology, lateral size, and defect content are reported. The materials were incorporated into composite sulfur‐based cathodes and studied in Li–S batteries with environmentally benign ether‐based electrolytes. Through directed synthesis of the MoS 2 additive, the relationship between synthetically induced defects in 2 D MoS 2 materials and resultant electrochemistry was elucidated and described.