Carbon riveted Pt/MnO2-Graphene catalyst prepared by in situ carbonized L-ascorbic acid with improved electrocatalytic activity and stability

Pt/Graphene and Pt/MnO2-Graphene catalysts have been prepared by microwave-assisted polyol process. Electrochemical results show that Pt/MnO2-Graphene has higher electrocatalytic activity and stability. Furthermore, carbon riveted Pt/MnO2-Graphene catalyst has been designed and synthesized on the basis of in situ carbonization of L-ascorbic acid. The stability for carbon riveted Pt/MnO2-catalyst is significantly enhanced.