Highly accessible, nanotube electrodes for large surface...

Details Highly accessible, nanotube electrodes for large surface... Highly accessible, nanotube electrodes for large surface...

H - Electricity

01

G

H01G 9/058 (2006.01) C01B 31/02 (2006.01) H01G 9/20 (2006.01)

Patent

CA 2663281

An highly porous electrically conducting film that includes a plurality of carbon nanotubes, nanowires or a combination of both. The highly porous electrically conducting film exhibits an electrical resistivity of less than 0.1 .OMEGA.-cm at 25 C and a density of between 0.05 and 0.70 g/cm3. The film can exhibit a density between 0.50 and 0.85 g/cm3 and an electrical resistivity of less than 6 x 10-3 .OMEGA.-cm at 25 C. Also included is a method of forming these highly porous electrically conducting films by forming a composite film using carbon nanotubes or nanowires and sacrificial nanoparticles or microparticles. At least a portion of the nanoparticles or microparticles are then removed from the composite film to form the highly porous electrically conducting film.

L'invention concerne un film conducteur d'électricité hautement poreux comportant plusieurs nanotubes ou nanofils en carbone ou une combinaison de ceux-ci. Le film conducteur d'électricité hautement poreux possède une résistivité électrique de moins de 0,1 .OMEGA.-cm à 25°C et une densité de 0,05 à 0,70 g/cm3. Le film peut avoir une densité de 0,50 à 0,85 g/cm3, et une résistivité électrique de moins de 6 x 10-3 .OMEGA.-cm à 25°C. L'invention concerne également un procédé de formation de ces films conducteurs d'électricité hautement poreux consistant à former un film composite en utilisant des nanotubes ou des nanofils de carbone ainsi que des nanoparticules ou des microparticules sacrificielles. Une partie au moins des nanoparticules ou des microparticules est retirée du film composite de manière à former le film conducteur d'électricité hautement poreux.

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