Catalyst for fuel cell and method for preparing the same

A method of preparing a catalyst for a fuel cell, the method comprising:

• irradiating ultrasonic waves to a precursor mixed solution including a noble metal precursor, a transition metal precursor, and a crystalline carbon support having a specific surface area of about 200 m2/g to about 500 m2/g, and forming core-shell particles including a transition metal oxide coating layer;
• annealing the core-shell particles and forming intermetallic particles including a transition metal oxide coating layer;
• and
• removing the transition metal oxide coating layer from the intermetallic particles, and
• wherein the catalyst comprises the crystalline carbon support, and intermetallic active particles of a transition metal and a noble metal,
• wherein the intermetallic active particles are supported on the crystalline carbon support and have a particle diameter of greater than or equal to about 3 nm, and
• wherein the catalyst comprises more than about 0% and about 40% or less by number of the intermetallic active particles embedded in pores of the carbon support, and more than about 60% and about 100% or less by number of the intermetallic active particles present in a surface of the carbon support with respect to a total number of the intermetallic active particles,
• wherein the intermetallic active particles comprise an intermetallic core of the transition metal and the noble metal, and a noble metal skin layer surrounding the intermetallic core,
• wherein the noble metal comprises platinum (Pt) and the transition metal comprises iron (Fe),
• wherein the crystalline carbon support has a carbon shell thickness of about 3 nm to about 6 nm;
• and
• wherein the core-shell particles comprise a transition metal core, a noble metal shell surrounding the transition metal core, and a transition metal oxide coating layer surrounding the noble metal shell.