Co-crushed mixture of an active material and of a conductivematerial, preparation methods and uses thereof

• Main Authors: ZAGHIB KARIM, CHAREST PATRICK, PETITCLERC MICHEL, DONTIGNY MARTIN, GUERFI ABDELFAST
• Format: Patent
• Language: Chinese; English
• Published: 25.02.2009
• Subjects: ADHESIVES; APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL; BASIC ELECTRIC ELEMENTS; CABLES; CHEMICAL PAINT OR INK REMOVERS; CHEMISTRY; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; COMPOSITIONS BASED THEREON; CONDUCTORS; CORRECTING FLUIDS; DYES; ELECTRICITY; FILLING PASTES; INFORMATION STORAGE; INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER; INKS; INSULATORS; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; ORGANIC MACROMOLECULAR COMPOUNDS; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; PERFORMING OPERATIONS; PHYSICS; POLISHES; PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING ORDIELECTRIC PROPERTIES; SPRAYING OR ATOMISING IN GENERAL; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS; USE OF MATERIALS THEREFOR; WOODSTAINS

The invention concerns a mixture of particles consisting of a carrier based on at least one active material M1of average size T1 and of specific surface S1 on which are bonded, via physical and/or chemical bonds, particles of at least an electronically conductive material M2 of average size T2 and of specific surface S2. The mixture is characterized in that: the average size ratio T1/T2 ranges between 5 and 10000; The specific surface ratio S1/S2 ranges between 1/300 and 1/2; and the amount of active material present in the mixture preferably represents more than 80% of the amount of the conductive material. The incorporation of said mixtures into elements constituting electrochemical systems substantially improves the performances of the latter.