Hydro-quebec

Meeir Technologie Inc.

Sylvio Savoie

Robert Schulz

Karim Zaghib

Abdelbast Guerfi

Andrea Paolella

Vincent Gariepy

Wen Zhu

This document describes processes for preparing ceramics, especially lithium-based ceramics. The ceramics produced by this process and their use in electrochemical applications are also described as well as electrode materials, electrodes, electrolyte compositions, and electrochemical cells comprising them.

Ceramics, methods for the production thereof and uses of same

The invention concerns a nanocrystalline alloy of the formula:FeAlMTwherein: The invention also concerns the use of this alloy in a nanocrystalline form or not for the fabrication of electrodes which in particular, can be used for the synthesis of sodium chlorate.

Nanocrystalline alloys of the FE3AL(RU) type and use thereof optionally in nanocrystalline form for making electrodes for sodium chlorate synthesis

The invention relates to a composite material of formula: (C&#x2014;N&#x2014;B-MR)(Al-MR)(R)in which C&#x2014;N&#x2014;B-MR is one or more carbides, nitrides or borides of one or more refractory metals of group IV, V or VI of the Periodic Table and/or one or more aluminium carbides, nitrides or borides chosen from AlC, AlN, AlBand AlB; Al-MR is one or more aluminides of one or more of the above refractory metals, it being understood that: if MR=Nb, Ta, Hf, Zr, Ti or V, then Al-MR=AlMR; if MR=W or Cr, then Al-MR=AlMR; if MR=Mo, then Al-MR=AlMoor AlMo(&#x2245;AlMo), and R is a residual component other than carbon, comprising one or more phases chosen from AlC, AlN, AlB, AlBand MRtAlu(C&#x2014;N&#x2014;B)v in which t, u and v are numbers greater than or equal to zero, and x, y and z are the volume fractions of the respective components with x&#x3e;y; x+y&#x3e;0.5; x+y+z+1 and 0.01&#x3c;y&#x3c;0.5. The invention is also aimed at the use of this composite material as a coating in a component that can be welled by liquid aluminium and can be used in electrolysis cells.

Composite materials for wettable cathodes and use thereof for aluminum production

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Ste-Julie, Canada

Sylvio Savoie