Enhancing the CO tolerance of Pt/C as PEM fuel cell anode catalyst by modifying the catalyst synthesis method

Document Type : Research Paper


1 Department of Chemical Technologies, Iranian Research Organization for Science and Technology (IROST),Tehran, IRAN

2 Department of Chemical Technologies, Iranian Research Organization for Science and Technology (IROST), Tehran, IRAN


The most important challenge in Proton Exchange Membrane (PEM) fuel cells is poisoning of the anode catalyst in the presence of impurities, especially carbon monoxide (CO) in the hydrogen feed. So, synthesis of catalysts with high CO tolerance is important for the commercialization of PEM fuel cells. In this study, a common borohydride reduction method was modified to synthesize a carbon supported Platinum Nanocatalyst (Pt/C) with a higher stability in the presences of CO impurity compared to a commercial Pt/C catalyst. The catalysts were characterized by X-ray diffraction and Scanning Electron Microscopy (SEM). The electrochemical cyclic voltammetry (CV) test procedure was used to evaluate the catalyst’s resistance to long-term CO exposure. The results showed that the synthesized catalyst’s electrochemical activity for CO electro-oxidation was comparable to commercial Pt/C under the same conditions. Moreover, the endurance of our catalyst for CO electro-oxidation after 100 CV with continuous CO gas bubbling is remarkable compared to the commercial catalyst performance, which dropped about 88 percent from its initial amounts.


Main Subjects

[1] Pereira L. S., Paganin V. A. and Ticianelli E. A., “Investigation of the CO tolerance mechanism at several Pt-based bimetallic anode electrocatalysts in a PEM fuel cell”, Electrochim. Acta, 2009, 54:1992.
[2] O’hayre R., Cha S. W., Fritz W. C. and Prinz B., 2nd ed., Fuel Cell Fundamentals, John Wiley & Sons, 2009.
[3] Mousavi Ehteshamia S.M., Jia Q., Halder A., Chan S.H. and Mukerjee S., “ The role of electronic properties of Pt and Pt alloys for enhanced reformate electro-oxidation in polymer electrolyte membrane fuel cells”, Electrochim. Acta, 2013, 107: 155.
[4] Litster S. and McLean G., “PEM fuel cell electrodes”, J. Power Sources, 2004, 130: 61.
[5] Mousavi Ehteshamia S.M., Chan S.H., “A review of electrocatalysts with enhanced CO tolerance and stability for polymer electrolyte membarane fuel cells”, Electrochim. Acta, 2013, 93: 334.
[6] Antolini E., “ Structural parameters of supported fuel cell catalysts: The effect of particle size, inter-particle distance and metal loading on catalytic activity and fuel cell performance “, Appl. Catal. B, 2016, 181: 298.
[7] Liu Z., Jackson G.S. and Eichhorn B.W., “PtSn Intermetallic, Core–Shell, and Alloy Nanoparticles as CO Tolerant Electrocatalysts for H2 Oxidation”, Angew. Chem., Int. Ed., 2010, 49:3173.
[8] Santos-Alvarez N., Alden L.R. and Rus E., Wang H., DiSalvo F.J., Abruna H.D., “ CO tolerance of ordered intermetallic phases “, J. Electroanal. Chem., 2009, 626:14.
[9] Hao Wan C. and Zhuang Q.H., “Novel layer wise anode structure with improved CO-tolerance capability for PEM fuel cell”, Electrochim. Acta, 2007, 52:4111.
[10] Lopez R.G., Huerta M.V. and Villafuerte O.G., “ Highly dispersed molybdenum carbide as non-noble electrocatalyst for PEM fuel cells: Performance for CO electrooxidation “, Int. J. hydrogen energy, 2010, 35: 7881.
[11] Huang C., Odetola C.B. and Rodgers M., “Nanoparticle seeded pulse electrodeposition for preparing highperformance Pt/C electrocatalysts”, Appl. Catal. A, 2015, 499: 55.
[12] Salgado J.R.C., Antolini E. and Gonzalez E.R., “Preparation of Pt-Co/C electrocatalysts by reduction with borohydride in acid and alkaline media”, J. Power Sources, 2004, 138: 56.
[13] Zeng J., Lee J.Y. and Zhou W., “More active Pt/carbon DMFC catalyst by simple reversal of the mixing sequence in preparation”, J. Power Sources, 2006, 159: 509.
[14] Zignania S.C., Antolini E. and Gonzalez E.R., “Evaluation of the stability and durability of Pt and Pt–Co/C catalysts for polymer electrolyte membrane fuel cells”, J. Power Sources 2008, 182:83.
[15] Prabhuram J., Zhao T.S., Tang Z.K., Chen R. and Liang Z.X., “Multiwalled Carbon Nanotube Supported PtRu for the Anode of Direct Methanol Fuel Cells”, J. Phys. Chem. B, 2006, 110: 5245.
[16] Watanabe M., Uchida M. and Motoo S., “Preparation of highly dispersed Pt + Ru alloy clusters and the activity for the elecirooxidation of methanol “, J. Electroanal. Chem., 1987, 229: 395.
[17] Ren L. and Xing Y., “Effect of pH on PtRu electrocatalysts prepared via a polyol process on carbon nanotubes”, Electrochim. Acta, 2008, 53: 5563.
[18] Chu Y., Wang Z.B., Gu D.M. and Yin G.P., “Performance of Pt/C catalysts prepared by microwave-assisted polyol process for methanol electrooxidation “, J. Power Sources, 2010, 195:1799.
[19]  Eriksson S., Nylén U., Rojas S. and Boutonnet M., “Preparation of catalysts from microemulsions and their applications in heterogeneous catalysis “, Appl. Catal. A, 2004, 265: 207.
[20] Venkateswara Rao C. and Viswanathan B., “Microemulsion synthesis and electrocatalytic properties of carbon-supported Pd–Co–Au alloy nanoparticles “, J. Colloid Interface Sci., 2012, 367: 337.
[21] Ochal P., Fuente J.L. and Tsypkin M., “CO stripping as an electrochemical tool for characterization of Ru@Pt core-shell catalysts”, J. Electroanal. Chem., 2011, 655: 140.
[22] Rheaume J.M., Muller B. and Schulze M., “XPS analysis of carbon-supported platinum electrodes and characterization of CO oxidation on PEM fuel cell anodes by electrochemical half-cell methods”, J. Power Sources, 1998, 76:60.
[23] Kheradmandinia SH., Khandan N. and Eikani M.H., “ Synthesis and evaluation of CO electro-oxidation activity of carbon supported SnO2, CoO and Ni nano catalysts for a PEM fuel cell anode “, Int. J. Hydrogen Energy, 2016, 41: 1907.
[24] Pozio A., Francesco M.D., Cemmi A., Cardellini F. and Giorgi L., “Comparison of high surface Pt/C catalysts by cyclic voltammetry “, J. Power Sources, 2002, 105: 13.
[25] Rui L., Chunhui C., Haiyan Z., Huibo H. and Jianxin M., “Electro-catalytic activity of enhanced CO tolerant cerium-promoted Pt/C catalyst for PEM fuel cell anode”, Int. J. Hydrogen Energy. 2012, 37: 4648.