| Literature DB >> 25236752 |
Tyler Evans1, Daniela Molina Piper, Seul Cham Kim, Sang Sub Han, Vinay Bhat, Kyu Hwan Oh, Se-Hee Lee.
Abstract
High-energy-density FeS2 cathodes en-abled by a bis(trifluoromethanesulfonyl)imide (TFSI-) anion-based room temperature ionic liquid (RTIL) electrolyte are demonstrated. A TFSI-based ionic liquid (IL) significantly mitigates polysulfide dissolution, and therefore the parasitic redox shuttle mechanism, that plagues sulfur-based electrode chemistries. FeS2 stabilization with a TFSI(-) -based IL results in one of the highest energy density cathodes, 542 W h kg(-1) (normalized to cathode composite mass), reported to date.Entities:
Keywords: bis(trifluoromethanesulfonyl)imide; cathodes; polysulfide dissolution; pyrite; room temperature ionic liquids
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Year: 2014 PMID： 25236752 DOI： 10.1002/adma.201402103
Source DB: PubMed Journal: Adv Mater ISSN： 0935-9648 Impact factor: 30.849