| 摘要 |
Provided is a method of manufacturing a catalyst-supporting carbon nanotube which is uniformly coated with an ionomer from the base to the end part of the carbon nanotube. A method of manufacturing a catalyst-supporting carbon nanotube which is coated with an ionomer comprises: a step of preparing, on at least one face of a substrate, a catalyst-supporting carbon nanotube which is oriented approximately perpendicular to the direction of the plane of the substrate; a step of preparing a first ionomer solution; an ionomer coating step of bringing the catalyst-supporting carbon nanotube into contact with the first ionomer solution and coating the catalyst-supporting carbon nanotube with the ionomer; and a drying step of drying the catalyst-supporting carbon nanotube which is coated with the ionomer. At least one iteration of a sequential process including the steps from the ionomer coating step to the drying step is carried out. The method further comprises an ionomer removal step of, after the ionomer coating step and before the drying step, preferentially removing the portion of the ionomer which has adhered unevenly in a thickness direction of a layer formed from the ionomer-coated catalyst-supporting carbon nanotube that has adhered on the end part of the carbon nanotube to a relatively greater degree than on other sites of the carbon nanotube. |
