Patent ID: 7862932

Claim:
A fuel cell, comprising: a cathode comprising a cathode catalyst layer, wherein said cathode is in contact with an oxidizing agent; an anode comprising an anode catalyst layer, wherein said anode is in contact with a fuel; and a proton conductive membrane arranged between the cathode and the anode, wherein the cathode catalyst layer comprises a cathode catalyst, comprising: a cathode catalyst particle comprising at least one component selected from the group consisting of gold and a gold alloy, the gold alloy comprising gold and at least one element selected from the transition metal elements of the fourth period, fifth period and sixth period of the Periodic Table; and a cathode catalyst carrier carrying the cathode catalyst particle and comprising a perovskite type oxide represented by formula (1): A (1-x) B x TiO y (1) where the element A is at least one element selected from the group consisting of Ca, Sr and Ba, the element B is at least one element selected from the group consisting of La, Nd, Sm, Eu, Gd, Dy, Ho, Er, Tm, Yb, and Lu, the molar ratio x satisfies 0<x<1, and the molar ratio y satisfies 2.7â‰¦yâ‰¦3.