CONDUCTIVE SHEET MATERIAL

• Main Authors: WALKER, NIGEL JULIAN, EDWARDS, STEPHEN JOHN
• Format: Patent
• Language: English; French
• Published: 01.02.2011
• Subjects: BASIC ELECTRIC ELEMENTS; CABLES; CONDUCTORS; ELECTRICITY; IMPREGNATING OR COATING OF PAPER; INSULATORS; PAPER NOT OTHERWISE PROVIDED FOR; PAPER-MAKING; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; PRODUCTION OF CELLULOSE; PULP COMPOSITIONS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING ORDIELECTRIC PROPERTIES; SEPARATION; TEXTILES; TRANSPORTING; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G

A conductive microporous sheet material comprises primary carbon fibres having a cross-sectional dimension of at least 1 µm, secondary carbon fibres in the form of carbon nanofibres and a binding agent for binding said primary and secondary fibres. The material may be produced by a wet-laid non-woven (paper-making) process. The sheet material may be used as a gas diffusion layer for a fuel cell or an electrode material for a battery.