Abstract: An electrode comprising a current collector containing aluminum, having a three dimensional porous structure in which: certain pores are open; the average diameter of the open pores being greater than or equal to 50 ?m and less than or equal to 250 ?m; two contiguous open pores communicate by at least one opening the diameter of which being greater than or equal to 20 ?m and less than or equal to 80 ?m; said structure containing a mixture comprising: a) at least one active material of the fluorinated carbon CFx type with x ranging between 0.5 and 1.2; b) at least one electron conducting additive; c) at least one binder.

Abstract: The invention provides an electrochemical cell having a liquid positive material and comprising a metal anode and a carbon-based cathode, the cell being characterized in that the cathode comprises a carbon aerogel.

Abstract: The invention provides a solid polymer electrolyte comprising a polymer which is a polyacrylonitrile, a plasticizer made up of a lithium salt in solution in a liquid organic solvent, and a reinforcing agent which is an organic compound constituted by porous grains of a polymer having polyamide structural units.

Abstract: A porous metal body, e.g. an electrode for an electric cell, is prepared using the following steps:preparing a foam by adding a surface active agent and a gelling agent to water and then foaming the mixture by stirring and/or blowing air through it;incorporating metal powder in the foam in order to obtain a suspension of the metal therein;shaping the foam with its suspension of metal, and adding a stabilizing agent thereto, said stabilizing agent being one which polymerizes on contact with water, thereby causing the shaped foam to set in shape; andheating the set foam to pyrolize the organic material therein and to sinter the metal.This method produces a more even and a more reliable pore size than has previously been possible.