Arkema France

Oxis Energy Limited

Gregory Schmidt

Wissam Rached

Philippe Bonnet

Bertrand Collier

Dominique Plee

Stéphane Bizet

Fabrice Domingues Dos Santos

Rémy Teissier

Jerome Chauveau

Dmitri Colesnic

Ashley Cooke

Sophie Audureau

Sebastian Desilani

A method for controlling the temperature of a battery in an electric or hybrid motor vehicle by means of a system including a vapor compression circuit in which a first heat transfer composition flows, and a secondary circuit in which a second heat transfer composition flows, the method involving: —heat exchange between the battery and the second heat transfer composition; —heat exchange between the second heat transfer composition and the first heat transfer composition; wherein the battery includes at least one electrochemical cell having a negative electrode, a positive electrode and an electrolyte including a lithium salt composition, the lithium salt composition including: —at least 99.75% by weight of a lithium salt of bis(fluorosulfonyl)imide; —chlorides Cl— at a mass content strictly less than 20 ppm. Also a system for carrying out the method.

Method for controlling the temperature of a battery comprising a lithium salt

The invention relates to a fluoropolymer film which makes it possible to manufacture a gelled dense membrane which offers a very good compromise between ionic conductivity and mechanical strength after swelling. This membrane is intended for use as a separator for Li-ion batteries.

Gelled polymer membrane for Li-ion battery

The use of a refrigerant including 2,3,3,3-tetrafluoropropene for the heating of a battery of an electric vehicle including at least one electrochemical cell including a negative electrode, a positive electrode and an electrolyte, the electrolyte including a lithium salt and the negative electrode including metallic lithium as electrochemically active material.

Use of 2,3,3,3-tetrafluoropropene for heating a lithium battery

The invention relates to an anode for a Li-ion rechargeable battery, said anode being covered with a protective film based on fluorinated copolymer(s). The invention also relates to the processes for preparing this anode. The invention also relates to a Li-ion rechargeable battery comprising an anode according to the invention. The invention lastly relates to the use of fluorinated copolymer(s) as film for covering an anode for a lithium-ion battery comprising a negative electrode active material.

Anode for Li-ion battery

The present invention relates to a lithium-sulphur cell comprising an anode comprising lithium metal or lithium metal alloy;a cathode comprising a mixture of electroactive sulphur material and solid electroconductive material; and a liquid electrolyte comprising at least one lithium salt and a solvent comprising a dinitrile.

Lithium-sulphur cell

A process for preparing a fluoro compound of formula: R&#x2014;(SO)&#x2014;NX&#x2014;(SO)&#x2014;F (III) including: (a) a first step for obtaining the chloro compound of formula: R&#x2014;(SO)&#x2014;NX&#x2014;(SO)&#x2014;Cl; (II) this first step including the reaction of the sulfamide of formula: R&#x2014;(SO)&#x2014;NH(I) with a sulfureous acid and a chlorinating agent; and (b) a second step for obtaining the fluoro compound of formula (III), this second step including the reaction of the chloro compound of formula (II) with anhydrous hydrofluoric acid in at least one organic solvent; in which: X represents either a hydrogen atom or a monovalent cation M; Rrepresents an electron-withdrawing group having a positive Hammett parameter &#x3c3;; if Rrepresents Cl, then Rrepresents OH; otherwise, Ris identical to R; and if Rrepresents Cl, then Rrepresents F; otherwise, Ris identical to R.

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Mornant, France

Gregory Schmidt