Method for the production of a polyacrylonitrile-sulfur composite material

• Main Authors: FANOUS JEAN, TENZER MARTIN
• Format: Patent
• Language: English
• Published: 04.02.2015
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; BASIC ELECTRIC ELEMENTS; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; ELECTRICITY; GENERAL PROCESSES OF COMPOUNDING; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS; WORKING-UP

The invention relates to a method for producing a polyacrylonitrile-sulfur composite material, comprising the steps of: a) providing a matrix material; b) optionally adding sulfur to the matrix material; c) adding polyacrylonitrile to the matrix material to obtain a mixture of sulfur and polyacrylonitrile; and d) reacting sulfur and polyacrylonitrile. A composite material produced in said manner can be used especially as an active material of a cathode in a lithium-ion battery and has a particularly high rate capability. The invention further relates to methods for producing an active material for an electrode.