We report a highly durable hybrid catalyst composed of Pt/graphene oxide (GO) and Pt/C catalyst for polymer electrolyte membrane fuel cell (PEMFC). The accelerated durability tests in half-cell and full cell systems shows that the addition of small amount of Pt/GO catalyst significantly enhances the durability of commercial Pt/C catalyst without sacrificing initial electrochemical active surface area (ECSA). The XRD and TEM analysis reveal that the GO not only exhibits the high resistance to Pt agglomeration but also prevents the Pt agglomeration in Pt/C catalyst by providing the anchoring sites of eluted metal ions. We believe that this simple and effective approach can open a new way to fabricate highly durable electrocatalyst for the commercialization of fuel cell vehicles. (C) 2013 Elsevier B.V. All rights reserved.