Single wall carbon nanotube based air cathodes

Details Single wall carbon nanotube based air cathodes Single wall carbon nanotube based air cathodes

H - Electricity

01

M

H01M 12/06 (2006.01) B82B 3/00 (2006.01) H01M 8/02 (2006.01)

Patent

CA 2759947

An embodiment of the invention is an air cathode having a porous membrane with at least one hydrophobic surface that contacts a conductive catalytic film that comprises single walled carbon nanotubes (SWNTs) where the nanotubes are in intimate electrical contact. The conductive film can include fullerenes, metals, metal alloys, metal oxides, or electroactive polymers in addition to the SWNTs. In other embodiments of the invention the air cathode is a component of a metal-air battery or a fuel cell.

Un mode de réalisation de l'invention porte sur une cathode à air comprenant une membrane poreuse présentant au moins une surface hydrophobe qui est en contact avec un film catalytique conducteur qui comprend des nanotubes de carbone monofeuillet (SWNT), les nanotubes étant en contact électrique intime. Le film conducteur peut comprendre des fullerènes, des métaux, des alliages métalliques, des oxydes métalliques ou des polymères électro-actifs en plus des SWNT. Dans d'autres modes de réalisation de l'invention, la cathode à air est un composant d'une batterie métal-air ou d'une pile à combustible.

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