Hydro-quebec

Julie Trottier

Karim Zaghib

Abdelbast Guerfi

Dominic Leblanc

Patrick Charest

Pierre Hovington

Catherine Gagnon

Francis Barray

Matjaz Kozelj

Chisu Kim

The invention relates to an improved lithium-air battery. The battery includes a negative electrode and a positive electrode separated by an electrolyte, wherein the negative electrode consists of a film of metal material selected from among lithium and lithium alloys, the positive electrode includes a film of a porous carbon material on a current collector, and the electrolyte is a solution of lithium salts in a solvent. The battery is characterized in that the surface of the negative electrode opposite the electrolyte has a passivation layer containing LiS, LiSO, LiO, and LiCO, the passivation layer being richer in sulfur compound on the surface thereof that is in contact with the electrolyte. The battery is obtained by means of a method consisting of producing the positive electrode, the electrolyte, and a film of the metal material for forming the negative electrode, and assembling the positive electrode, the electrolyte, and the film of metal material. The method is characterized in that it includes a step of subjecting the film of metal material to a gaseous atmosphere containing SO, before or after the assembly thereof with the positive electrode and the electrolyte.

Lithium-air battery

Anode comprising an anode material, a protective material and a current collector is provided. The anode material is a mixture comprising an active material, at least one electronically conductive agent and at least one binder. The active material may be an alloy of silicon and lithium or an alloy of silicon oxide and lithium. There is provided a process for the preparation of the anode. Also, there is provided use of the anode in the fabrication of a battery.

Anode for high-energy batteries

A process for the preparation of nanofilament particles of SiOin which x is between 0.8 and 1.2, the process comprising: a step consisting of a fusion reaction between silica (SiO) and silicon (Si), at a temperature of at least about 1410&#xb0; C., to produce gaseous silicon monoxide (SiO); and a step consisting of condensation of the gaseous SiO to produce the SiOnanofilament particles. The process may also comprising using carbon.

[object Object]

All-solid-state lithium-sulfur electrochemical cells and production methods thereof are described. The Li&#x2014;S electrochemical cells comprise at least one multilayer component which comprises an ion-conductive solid electrolyte film, a positive electrode film containing a sulfur composite, and a negative electrode film containing lithium. Positive electrodes films, prefabricated electrolyte-positive electrode elements, their uses as well as methods of their production are also described.

All-solid-state lithium-sulfur polymer electrochemical cells and production methods thereof

There is provided an ionic compound having attached thereto a silyloxy group. There is also provided methods of making this ionic compound as well as electrolytes, electrochemical cells and capacitors comprising this ionic compound.

Growing community of inventors

Mirabel, Canada

Julie Trottier