Centre National De La Recherche Scientifique

Commissariat a L'energie Atomique Et Aux Energies Alternatives

Arkema France

Blue Solutions

Université François Rabelais

Université D'orleans

Universite De Tours

Université Francois Rabelais De Tours

Daniel Lemordant

Laure Timperman

Mérièm Anouti

Grégory Schmidt

Philippe Azais

Herve Galiano

Hervé Galiano

Encarnacion Raymundo-Pinero

Francois Beguin

Meriem Anouti

Christopher Berhaut

Grzegorz Lota

Celine Moueza-Decaux

Bénédicte Montigny

Céline Decaux-Moueza

Thamra Abdallah

An electrolytic composition including at least one lithium salt of formula (A) wherein Rf represents a fluorine atom, a nitrile group, an optionally fluorinated or perfluorinated alkyl group having from 1 to 5 carbons, an optionally fluorinated or perfluorinated alkoxy group having from 1 to 5 carbons or an optionally fluorinated or perfluorinated oxa-alkoxy group having from 1 to 5 carbons; and the following solvent mixture: ethylene carbonate, &#x3b3;-butyrolactone, and methyl propanoate. Also, to the use of the compositions in Li-ion batteries.

Improving the ionic conductivity of an electrolyte based on lithium imidazolate salts

The present invention relates to ionic liquids comprising, as cation, a specific phosphonium cation, as anion, a formate anion, which can be used, alone or as a mixture, to constitute electrolytes for energy storage devices.

Ionic liquids that can be used as part of the electrolyte composition for energy storage devices

A method is provided for developing a hybrid supercapacitor. The method includes the use of a lithium salt of the electrolyte to carry out the intercalation/insertion of the lithium at the negative electrode but by greatly increasing the concentration of lithium ions of the electrolyte order to subsequently accept a depletion. As the depletion in ions has an impact on the conductivity, the amount and the concentration of the electrolyte are chosen in order to make it possible to accept this depletion white retaining a conductivity of the electrolyte compatible with a powerful system for storage of energy. A portion of the Liions present in the electrolyte is used to form the passivation layer and the compound for intercalation/insertion LiCat the negative electrode.

Method for assembling a hybrid lithium supercapacitor

Growing community of inventors

Vouvray, France

Daniel Lemordant