# US 2003/0175494 A1 · Porous composite product in particular with a high specific surface preparation process and electrode formed of a porous composite film for an electro-chemical assembly > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2003/0175494 A1 - Document ID: US20030175494A1 - Status: Published application - Kind: A1 - Application number: 10/390,422 - Filed: 2003-03-17 - Published: 2003-09-18 - Earliest claimed: 1997-02-06 - Assignees: Bollore - Inventors: Jean-Francois Penneau; Francois Capitaine; Philippe Le Goff - Web page: https://patentgrep.com/patent/US20030175494A1 ## CPC - B01D 67/003: {by selective elimination of components, e.g. by leaching} - B01D 69/02: characterised by their properties - B01J 20/20: comprising free carbon; comprising carbon obtained by carbonising processes - B01J 20/26: Synthetic macromolecular compounds - B01J 20/28014: {characterised by their form} - B01J 20/28026: {Particles within, immobilised, dispersed, entrapped in or on a matrix, e.g. a resin} - B01J 20/2803: {Sorbents comprising a binder, e.g. for forming aggregated, agglomerated or granulated products} - B01J 20/28033: {Membrane, sheet, cloth, pad, lamellar or mat} - B01J 20/28057: {Surface area, e.g. B.E.T specific surface area} - B01J 20/28078: {Pore diameter} - B29C 48/022: {characterised by the choice of material} - C08J 9/0066: {Use of inorganic compounding ingredients} - C08J 9/26: by elimination of a solid phase from a macromolecular composition or article, e.g. leaching out - C08L 71/02: Polyalkylene oxides - C25B 11/031: Porous electrodes - H01G 11/38: Carbon pastes or blends; Binders or additives therein - H01G 11/86: specially adapted for electrodes (carbonisation or activation of carbon for the manufacture of electrodes H01G11/34) - H01M 4/00: Electrodes - H01M 4/8605: {Porous electrodes} - H01M 4/96: Carbon-based electrodes - B01D 2323/10: Specific pressure applied - B01D 2323/12: Specific ratios of components used - B29C 48/08: flexible, e.g. films - C08J 2201/046: Elimination of a polymeric phase - Y02E 60/13: Energy storage using capacitors - Y02E 60/50: Fuel cells - Y10T 428/249953: Composite having voids in a component [e.g., porous, cellular, etc.] - Y10T 428/249978: Voids specified as micro - Y10T 428/249986: Void-containing component contains also a solid fiber or solid particle - B01D: SEPARATION (separating solids from solids by wet methods B03B, B03D; by pneumatic jigs or tables B03B; by other dry methods B07; magnetic or electrostatic separation of solid materials from solid materials or fluids, separation by high-voltage electric fields B03C; centrifuges, vortex apparatus B04; presses per se for squeezing-out liquid from liquid-containing material B30B9/02; treatment of water C02F, e.g. softening by ion-exchange C02F1/42; {arrangements of air intake cleaners in gas turbine plants F02C7/05} ; arrangements or mounting of filters in air-conditioning, air-humidification or ventilation F24F13/28) - B01J: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS - B29C: SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING (making preforms B29B11/00; making laminated products by combining previously unconnected layers which become one product whose layers will remain together B32B37/00 - B32B41/00) - C08J: WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H (working, e.g. shaping, of plastics B29) - C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06) - C25B: ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR (anodic or cathodic protection C23F13/00; single-crystal growth C30B) - H01G: CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE (selection of specified materials as dielectric H01B3/00; capacitors having potential barriers H10D1/62, H10K10/10) - H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract A porous composite product in the form of a film with a high specific surface. Used in a wide range of electrochemical products especially in the field of selective membranes, packaging or catalysis. The porous composite product has a high homogeneity in the distribution of the filler and a continuous structure. The product is capable of being obtained by extrusion. ## Claims ### Claim 1 An electrode for an electrochemical assembly, such as an electrochemical generator or accumulator, the electrode being formed of a film of porous composite product comprising a polymeric material and between 30% and 90% by weight of one or more fillers, the said film being obtained by extrusion, the porous composite product exhibiting a “BET” specific surface of greater than 10 m2/g and having an electrochemical capacity of greater than 2 F/g, and of an electrochemically active material. ### Claim 2 An electrode for a supercapacitor or capacitor, the electrode being formed of a film of porous composite product comprising a polymeric material and between 30% and 90% by weight of one or more fillers, the said film being obtained by extrusion, the porous composite product exhibiting a “BET” specific surface of greater than 10 m2/g and having an electrochemical capacity of greater than 2 F/g. ### Claim 3 An electrochemical assembly, in particular an electrochemical generator, capacitor or supercapacitor comprising two electrodes and a separator impregnated with an electrolyte, each electrode being formed of a film of porous composite product comprising a polymeric material and between 30% and 90% by weight of one or more fillers, the said film being obtained by extrusion, the porous composite product exhibiting a “BET” specific surface of greater than 10 m2/g and having an electrochemical capacity of greater than 2 F/g. ### Claim 4 An application of a film of porous composite product comprising a polymeric material and between 30% and 90% by weight of one or more fillers, the said film being obtained by extrusion, the porous composite product exhibiting a “BET” specific surface of greater than 10 m2/g and having an electrochemical capacity of greater than 2 F/g, for the electromechanical storage of energy. ### Claim 5 (depends on 2) The electrode according to claim 2, wherein the film has an electrochemical capacity of greater than 10 F/g. ### Claim 6 (depends on 2) The electrode according to claim 2, wherein the mean diameter of the pores is less than 0.5 μm. ### Claim 7 (depends on 2) The electrode according to claim 2, wherein the porosity is generally comprised between 15% and 50%. ### Claim 8 (depends on 2) The electrode according to claim 2, wherein the polymeric material comprises elastomers or polymers chosen from the group consisting of polyolefins, acrylic polymers, aromatic polymers, polyamides, polyimides, vinyl polymers with a high proportion of ethyl monomers, soluble in polar organic solvents or water, which remain after the implementation of the manufacturing process. ### Claim 9 (depends on 8) The electrode according to claim 8, wherein the polymeric material comprises elastomers or polymers chosen from the group consisting of polyethylenes, polypropylenes, ethylene-α-olefin copolymers, soluble in polar organic solvents or water, which remain after the implementation of the manufacturing process. ### Claim 10 (depends on 8) The electrode according to claim 8, wherein the polymeric material comprises fluorinated polymers, such as poly(vinylidene fluoride), or fluorinated copolymers such as vinylidene fluoride and hexafluoropropylene copolymers or vinylidene fluoride and trifluoroethylene copolymers. ### Claim 11 (depends on 8) The electrode according claim 8, wherein the thermoplastic elastomers, soluble in polar organic solvents or water, which remain after the implementation of the manufacturing process are chosen from polyethers, poly(vinyl alcohol)s or ethylene-vinyl alcohol copolymers. ### Claim 12 (depends on 11) The electrode according to claim 11, wherein the thermoplastic elastomers, soluble in polar organic solvents or water, which remain after the implementation of the manufacturing process are polyethers chosen from polyoxyethylenes or polyoxopropylenes. ### Claim 13 (depends on 8) The electrode according to claim 8, wherein the thermoplastic elastomers, soluble in polar organic solvents or water, which remain after the implementation of the manufacturing process are polyethers with a molecular mass of between 200,000 and 1,000,000. ### Claim 14 (depends on 8) The electrode according to claim 8, wherein the porous composite product comprises: 10 to 40% by weight of polyolefin, 5 to 40% by weight of polyether, fillers, sufficient quantity for 100% by weight. ### Claim 15 (depends on 8) The electrode according to claim 8, wherein the porous composite product comprises: 10 to 40% by weight of thermoplastic polymers or elastomers which are insoluble in aqueous and/or organic solvents, 5 to 40% by weight of polymers which are soluble in aqueous and/or organic solvents, fillers, sufficient quantity for 100% by weight. ### Claim 16 (depends on 2) The electrode according to claim 2, wherein the filler is chosen from fillers with a specific surface greater than 300 m2/g. ### Claim 17 (depends on 2) The electrode according to claim 2, wherein the filler is composed of active charcoal, inorganic particles or metallic particles. ### Claim 18 (depends on 2) The electrode according to claim 2, wherein the filler comprises graphites, carbon blacks, metal oxides, silica or talcs. ### Claim 19 (depends on 2) The electrode according to claim 2, wherein the filler exhibits a specific surface of greater than 1000 m2/g. ### Claim 20 (depends on 2) The electrode according to claim 2, wherein the porous composite product comprises between 50% and 85% by weight of filler. ### Claim 21 (depends on 2) The electrode according to claim 2, wherein the porous composite product exhibits a “BET” specific surface of greater than 20 m2/g. ### Claim 22 (depends on 2) The electrode according to claim 2, wherein the film is in the form of a spool. ### Claim 23 (depends on 2) The electrode, according to claim 2, wherein the film exhibit a tensile strength at break of greater than 4 MPa. ### Claim 24 (depends on 23) The electrode, according to claim 23, wherein the film exhibit a tensile strength at break of greater than 6 MPa.