| abstract |
A supported catalyst, an electrode including the catalyst, and a fuel cell using the electrode are provided. The supported catalyst comprises a carbon-based catalyst support, catalytic metal particles that are adsorbed onto a surface of the carbon-based catalyst support, and an ionomer that is chemically or physically adsorbed to the surface of the carbon-based catalyst support and has a functional group on an end that is capable of providing proton conductivity. In the supported catalyst, the catalyst support performs the function of transporting protons in an electrode. When using an electrode prepared using the supported catalyst, a fuel cell having improved energy density and fuel efficiency may be prepared. |