Centre National De La Recherche Scientifique

College De France

Sorbonne Université

Specialty Operations France

Electricite De France

Jean-Marie Tarascon

Valérie Buissette

Marc-David Braida

Thierry Le Mercier

Mathieu Morcrette

Renaud Bouchet

Laure Bertry

Patrick Rozier

Robin Amisse

Abdelmaula Aboulaich

Guochun Yan

Vincent Seznec

Laurence Tortet

Virginie Viallet

Michael Dolle

Jiwei Ma

Sathiya Mariyappan

Hussein Hijazi

Lucas Sannier

The present invention relates to the new process of preparation of a Li-rich layered oxide based on Mn and optionally on Ni and/or Co in which F is incorporated within the crystal of the oxide (or 'fluorinated oxide'). It also relates to the new fluorinated oxide its use as a component in a cathode of a battery.

Fluorinated oxide based on Li and Mn

An electrolyte composition includes at least a sodium salt dissolved in at least one solvent and a combination of additives. The solvent is any of ethylene carbonate, dimethyl carbonate, ethyl methyl carbonate, diethyl carbonate, propylene carbonate, ethyl acetate, ethyl propionate, methyl propionate, 4-fluorotoluene, 1,1,2,2-tetrafluoroethyl 2,2,3,3-tetrafluoropropyl ether, di-fluoro ethylene carbonate, ethyl difluoroacetate, or mixtures of the foregoing. The combination of additives includes at least sodium difluoro(oxalato)borate (NaODFB) and tris(trimethylsilyl)phosphite (TMSPi).

Electrolyte composition for sodium-ion battery

Growing community of inventors

PARIS, France

Jean-Marie Tarascon