Abstract: An organic electrolyte electric cell includes a first electrode having the superposition of a first layer containing an electrochemically active material and a porous second layer constituted by a polymeric material and having a free face. A second electrode is provided with a porous layer having at least one free face and containing an electrochemically active material, and the electrodes are assembled by adhesive bonding. The bonding is carried out by coating an adhesive onto the free face of the porous layer of one of the two electrodes and then bringing the free face coated with a film of adhesive into contact with the free face of the porous layer of the other electrode to form an electrochemical couple.

Abstract: A method of manufacturing an organic electrolyte electrochemical cell comprising at least one electrochemical couple made up of two electrodes sandwiching a solid film of porous polymer containing the electrolyte, each electrode comprising a porous layer containing an electrochemically active material and a binder, the method comprising the steps of: a polymer is put into solution in a solvent and the solution is spread in the form of a film on a support; the film of solution is immersed in a volatile non-solvent that is miscible with the solvent in order to precipitate the polymer and the polymer film is dried to eliminate the non-solvent; and the couple made up of the polymer film placed between the electrodes and in contact therewith, and impregnated with the electrolyte, is compressed while being heated to a temperature less than or equal to the temperature at which the polymer film starts to melt so as to obtain incomplete melting of the polymer, the electrodes becoming unseparable after cooling.

Abstract: In a process for the production of an organic electrolyte electric cell with a unitary structure comprising at least one pair of electrodes comprising a first electrode comprising the superposition of a first layer containing an electrochemically active material and a porous second layer constituted by a polymeric material and having a free face and a second electrode comprising a porous layer having at least one free face and containing an electrochemically active material the electrodes are assembled by adhesive bonding. The bonding is carried out by coating an adhesive onto the free face of the porous layer of one of the two electrodes and then bringing the free face coated with a film of adhesive into contact with the free face of the porous layer of the other electrode to form an electrochemical couple.

Abstract: A polymeric separator for an organic electrolyte electrochemical system comprises an elastomeric polymer, optionally, a polymer which swells in the organic electrolyte and with which the elastomeric polymer forms an alloy and, optionally, an inorganic compound. The polymeric separator has a microporous structure characterized by a porosity in the range 30% to 95% and pores with an average diameter in the range 0.

Abstract: A polymeric separator for an organic electrolyte electrochemical system comprises an elastomeric polymer, optionally, a polymer which swells in the organic electrolyte and with which the elastomeric polymer forms an alloy and, optionally, an inorganic compound. The polymeric separator has a microporous structure characterized by a porosity in the range 30% to 95% and pores with an average diameter in the range 0.1 &mgr;m to 5 &mgr;m.

Abstract: The present invention provides a method of manufacturing an organic electrolyte electrochemical cell comprising at least one electrochemical couple made up of two electrodes sandwiching a solid film of porous polymer containing said electrolyte, each electrode comprising a porous layer containing an electrochemically active material and a binder, the method comprising the following steps:

Abstract: A cell includes a separator comprising a felt type macroporous matrix the pores of which contain a PVDF type microporous polymer. The microporous polymer is placed in the macroporous matrix by impregnating the matrix with a solution containing the polymer. A method of preparing the cell includes the following steps: a bonding solution is produced containing a polymer, a solvent and a non-solvent; the macroporous matrix is impregnated with the solution; the impregnated macroporous matrix and the two electrodes are brought into contact to form an electrode assembly; and the assembly is dried to eliminate the solvent and the non-solvent.