Ionic liquid enabled FeS2 for high-energy-density lithium-ion batteries.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 25236752.
- Also identified by DOI 10.1002/adma.201402103.
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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.
Medical subject headings
- Electric Power Supplies
- Hydrocarbons, Fluorinated
- Imides
- Ionic Liquids
- Ions
- Iron
- Lithium
- Sulfides