Abstract: A method for transforming silicon slag into an anode material in lithium-ion batteries, comprising applying mechanical grinding, such as high-energy ball milling, to reduce particle size of silicon slag to micron and submicron sizes and/or to increase the amorphicity of the silicon slag powder. The silicon slag being used as raw material in fabricating the anodes has a composition of Si—SiC—C—SiO2, preferably having Si phase in both crystalline and amorphous states, and more preferably having Si phase only in amorphous state after a high-energy ball-milling thereof. The silicon slag has preferably a median particle diameter ?20 ?m after a high-energy ball-milling thereof and ?2 ?m after a slurry homogenization thereof. The silicon slag preferably contains 64% wt. Si+31% wt SiC+4% wt. C+1% wt. SiO2.

Abstract: A method for fabrication of an hydrogen-permeable membrane, comprising forming an alloy of a target composition and structure from powders by mechanically alloying; and forming a membrane from the alloy of the target composition and structure.

Abstract: The present description relates to an anode arrangement for use in an electrolysis production of metals comprising an anode having a hollow body comprising a cavity, the body having at least one gas outlet connected in flow communication with the cavity. A gas inlet is connected in fluid flow communication with the cavity of the anode, the gas inlet being connectable to a source of hydrogen gas for feeding hydrogen gas into the cavity of the anode. The anode arrangement also comprises an electrical connector and a hydrogen chloride (HCl) recuperator surrounding at least a portion of the anode for recovering HCl gas released through the at least one gas outlet at an outer surface of the anode during electrolysis.

Abstract: A rechargeable battery comprising a positive electrode, a negative electrode and an electrolyte, wherein: —the electrolyte comprises a SEI film-forming agent, and—the negative electrode comprises a micrometric Si based active material, a polymeric binder material and a conductive agent, wherein at least part of the surface of the Si based active material consists of Si—OCO—R groups, Si being part of the active material, and R being the polymeric chain of the binder material.

Abstract: A method for fabrication of an hydrogen-permeable membrane, comprising forming an alloy of a target composition and structure from powders by mechanically alloying; and forming a membrane from the alloy of the target composition and structure.

Abstract: A rechargeable battery comprising a positive electrode, a negative electrode and an electrolyte, wherein: —the electrolyte comprises a SEI film-forming agent, and—the negative electrode comprises a micrometric Si based active material, a polymeric binder material and a conductive agent, wherein at least part of the surface of the Si based active material consists of Si—OCO—R groups, Si being part of the active material, and R being the polymeric chain of the binder material.

Abstract: A rechargeable battery comprising a positive electrode, a negative electrode and an electrolyte, wherein: —the electrolyte comprises a SEI film-forming agent, and—the negative electrode comprises a micrometric Si based active material, a polymeric binder material and a conductive agent, wherein at least part of the surface of the Si based active material consists of Si—OCO—R groups, Si being part of the active material, and R being the polymeric chain of the binder material.

Abstract: An inert anode for Al electrolysis, made of Cu—Ni—Fe—O based materials, comprising Fe in a range between about 10 and 20% by weight, Cu in a range between about 60 and about 80% by weight, Ni in a range between about 20 and about 30% by weight, and oxygen in a range between about 1 and about 3% by weight, and a method for producing the anode, comprising mechanically alloying metallic elements; oxygen doping; and consolidation.

Abstract: An electrochemical method and system for removing nitrate and ammonia in effluents, using an undivided flow-through electrolyzer, said electrolyzer comprising at least one cell, each cell comprising at least one anode and one cathode, the cathode being in a copper/nickel based alloy of a high corrosion resistance and a high electroactivity for nitrate reduction to ammonia and the anode being a DSA electrode of a high corrosion resistance and a high electroactivity for ammonia oxidation to nitrogen in presence of chloride.

Abstract: A method for producing nanostructured coatings on a substrate, comprising: preparing a nanocrystalline powder of a powder size comprised between 1 and 60 ?m; and combining cleaning the surface of the substrate and cold spraying the nanocrystalline powder on the surface of the substrate, and a system for producing nanocrystalline coatings on a substrate, comprising a spray head, a cleaning head and a handling system monitoring the spray head and the cleaning head relative to the substrate to be coated, the spray head being a first cold spray head, the first cold spray head depositing on the substrate at least one nanocrystalline powder, the cleaning head optimizing the surface being coated with the at least one layer of nanocrystalline powder.

Abstract: A method for preparing an electrode composition, including a step of forming a suspension, in an unbuffered aqueous acid medium having a pH of 1 or in a buffered acid medium having a pH less than or equal to 4, containing an electrode active material in the form of particles of an element M selected from Si, Sn, and Ge, a polymer binder having reactive groups capable of reacting with hydroxyl groups in an acid medium, and an agent generating electronic conductivity. The invention also relates to the electrode obtained according to the method, as well as to a battery including such an electrode.

Abstract: A method for producing nanostructured coatings on a substrate, comprising: preparing a nanocrystalline powder of a powder size comprised between 1 and 60 ?m; and combining cleaning the surface of the substrate and cold spraying the nanocrystalline powder on the surface of the substrate, and a system for producing nanocrystalline coatings on a substrate, comprising a spray head, a cleaning head and a handling system monitoring the spray head and the cleaning head relative to the substrate to be coated, the spray head being a first cold spray head, the first cold spray head depositing on the substrate at least one nanocrystalline powder, the cleaning head optimizing the surface being coated with the at least one layer of nanocrystalline powder.