Carbon nanotubes, supported catalyst including the same, and fuel cell using the supported catalyst

摘要

A carbon nanotube, a method of preparing the same, a supported catalyst including the same, and a fuel cell using the supported catalyst are provided. The method of preparing the carbon nanotube includes: depositing a metal catalyst in single wall nanotubes and growing multi wall nanotubes over the single wall nanotubes using the metal catalyst. The carbon nanotubes of the present invention have satisfactory specific surface area and low surface resistance. Thus, the carbon nanotubes perform remarkably better than a conventional catalyst carrier. Accordingly, the carbon nanotubes, when used as a catalyst carrier of an electrode for a fuel cell, can improve the electrical conductivity of the fuel cell. In addition, a fuel cell employing the electrode has excellent efficiency and overall performance.