Nanostructured Platinum and Carbon Supported Pt-Ni Catalyst for Polymer Electrolyte Fuel Cell
The TEM images clearly showed that the PtNi nanoparticles were precipitated on the surface of carbon aggregates. The size of the PtNi particles synthesized by in both methods were distributed from 1 to 3 nm. XRD pattern indicated the face-centered cubic structure of the metal and alloy. The electrochemical surface area (ECA) of the PtNi catalytic electrode was estimated from the charge in the hydrogen adsorption/desorption region on the CVs measured in 0.5 M HClO4. The calculated ECA of 20PtNi(1:1)/C were highest at 55.0 m2/g. In addition, the CV data in 1.0M KOH solution containing alcohol show the best electrocatalytic performance of PtNi(1:1)/C for the alcohol oxidation.
The results showed the high catalytic of PtNi/C for ORR at room temperature. The number of electron transfer and mechanism of ORR will be discussed too.
The authors gratefully acknowledge Vietnam Ministry of Science and Technology for supporting NCCB – ĐHƯD.2011/G11 project. We thank ONRG and VNU-HCM for financial support throught grants N62909-13-1-N235 and HS2013-76-01.
 F. Vigier, C. Coutanceau, A. Perrard, E.M. Belgsir , C. Lamy, J. Appl. Electrochem., 34(2004).
 A. Adhikari, S. D. Fernando and A. Haryanto, Renew. Energ., 33(2008).
 C. Xu, T. S. Zhao, Y. Li, D. Yang, Int. J. Electroche. Sci., 2(2007).
 P. Holt-Hindle , A. Chen, Chem. Rev., 110(2010).
 T. G. H. Nguyen, T. V. A. Pham, T. X. P. Tran, T. X. B. Lam, V. M. Tran, T. P. T. Nguyen, Adv. Nat. Sci.: Nanosci. Nanotechnol., 4(2013).