Perfluoroalkanesulfonylimides and their lithium salts: synthesis and characterisation of intermediates and target compounds

Conte, L.; Gambaretto, G.P.; Caporiccio, G.; Alessandrini, F.; Passerini, Stefano

doi:10.1016/j.jfluchem.2003.07.003

Cited by 51 publications

(34 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Indeed, LiFNFSI, for instance, revealed good ionic conductivity,e nhanced thermal stability( > 220 8C), and the ability to suppress anodic aluminum dissolution at elevated potentials. [99] As lightly differenta pproacho fd esigning imide-basedl ithium salts was reportedb yC onte et al [103] and Murmann et al, [104] who synthesized and studied cyclic imides. Such imidess howeds uitable thermals tabilities, beneficial SEI-forming properties, and the ability to suppress anodic aluminum dissolution,but generally suffered from slightly decreased electrochemical stabilities and relativelyl ow ionic conductivities compared with state-of-the-artl ithium salts.…”

Section: Imide-based Lithium Saltsmentioning

confidence: 97%

See 1 more Smart Citation

Safer Electrolytes for Lithium‐Ion Batteries: State of the Art and Perspectives

et al. 2015

Self Cite

View full text Add to dashboard Cite

Lithium-ion batteries are becoming increasingly important for electrifying the modern transportation system and, thus, hold the promise to enable sustainable mobility in the future. However, their large-scale application is hindered by severe safety concerns when the cells are exposed to mechanical, thermal, or electrical abuse conditions. These safety issues are intrinsically related to their superior energy density, combined with the (present) utilization of highly volatile and flammable organic-solvent-based electrolytes. Herein, state-of-the-art electrolyte systems and potential alternatives are briefly surveyed, with a particular focus on their (inherent) safety characteristics. The challenges, which so far prevent the widespread replacement of organic carbonate-based electrolytes with LiPF6 as the conducting salt, are also reviewed herein. Starting from rather "facile" electrolyte modifications by (partially) replacing the organic solvent or lithium salt and/or the addition of functional electrolyte additives, conceptually new electrolyte systems, including ionic liquids, solvent-free, and/or gelled polymer-based electrolytes, as well as solid-state electrolytes, are also considered. Indeed, the opportunities for designing new electrolytes appear to be almost infinite, which certainly complicates strict classification of such systems and a fundamental understanding of their properties. Nevertheless, these innumerable opportunities also provide a great chance of developing highly functionalized, new electrolyte systems, which may overcome the afore-mentioned safety concerns, while also offering enhanced mechanical, thermal, physicochemical, and electrochemical performance.

show abstract

Section: Imide-based Lithium Saltsmentioning

confidence: 97%

“…Lithiumh exafluoropropane-1,3-disulfonimide, for instance, shows superior conductivity to that of LiTFSI and comparable conductivity to that of LiPF 6 in both DMC/EC and DEC/EC. [103] …”

Section: Imide-based Lithium Saltsmentioning

confidence: 99%

Safer Electrolytes for Lithium‐Ion Batteries: State of the Art and Perspectives

et al. 2015

Self Cite

View full text Add to dashboard Cite

show abstract

“…Figure 6 shows the variable-temperature TGA results at 5°C min −1 for the electrolytes. The −SO 2 F group is far more reactive than −SO 2 CF 3 toward water ͑especially at elevated temperature͒, and the −SO 2 F group is used as an intermediate for the formation of sulfonylimide [40][41][42] or sulfonate 43 functional groups by reactions with nucleophiles ͑amine or OH − ͒. 1͒, but significant mass loss occurs above this temperature.…”

Section: Resultsmentioning

confidence: 99%

Electrochemical and Physicochemical Properties of PY[sub 14]FSI-Based Electrolytes with LiFSI

Paillard

Zhou

Henderson

et al. 2009

J. Electrochem. Soc.

Self Cite

152

144

View full text Add to dashboard Cite

We report here the characterization of Li battery electrolytes based upon the N -butyl- N -methylpyrrolidinium bis(fluorosulfonyl)imide ionic liquid (PY14FSI) with lithium bis(fluorosulfonyl)imide (LiFSI) as a support salt. These electrolytes show low viscosity relative to other pyrrolidinium-based ionic liquids (ILs) and corresponding higher conductivity at subambient temperatures. The melting point of the IL decreases with the addition of LiFSI and concentrated samples remain totally amorphous. The electrolytes exhibit decreased thermal stability and increased parasitic cathodic reactions with increasing LiFSI fraction relative to the pure IL, probably due to a higher impurity level for the commercial LiFSI. Despite this, the electrolytes have excellent lithium cycling behavior at 20°C .

show abstract

“…[33][34][35][36] HNTf 2 33 Li[NTf 2 ] (1.00 mol eq.) and sulfuric acid, (3.00 mol eq.,) were placed in a cylindrical Kugelrohr flask and fixed to a Kugelrohr distillation apparatus.…”

Section: Synthesesmentioning

confidence: 99%