Performance of DMFC anodes with ultra-low Pt loading

Abstract The electrochemical behaviour of Pt-decorated unsupported Ru catalysts-based anodes has been investigated in direct methanol fuel cells (DMFCs). A preparation procedure allowing the surface decoration of unsupported Ru catalysts by Pt nanoparticles has been developed. DMFC power densities of 150 mW cm −2 at 130 °C have been achieved with ultra-low Pt loading anodes (0.1 mg cm −2 ) under air feed operation. Adsorbed methanolic residues stripping voltammetry analysis has been carried out to get information on the electrocatalytic activity of the Pt-decorated anodes in relation to the state-of-art carbon supported Pt–Ru (1:1) alloy and bare unsupported Ru catalysts.

[1]  Malcolm J. Bowman,et al.  Proceedings of the Workshop , 1978 .

[2]  Shimshon Gottesfeld,et al.  Electrocatalysis in direct methanol fuel cells: in-situ probing of PtRu anode catalyst surfaces , 2000 .

[3]  V. Antonucci,et al.  FTIR spectroscopic investigation of inorganic fillers for composite DMFC membranes , 2003 .

[4]  S. Wasmus,et al.  Methanol oxidation and direct methanol fuel cells: a selective review 1 In honour of Professor W. Vi , 1999 .

[5]  S. Parthasarathy,et al.  High performance electrodes with very low platinum loading for polymer electrolyte fuel cells , 1995 .

[6]  H. Tributsch,et al.  Energy conversion catalysis using semiconducting transition metal cluster compounds , 1986, Nature.

[7]  W. Visscher,et al.  Measurement of the Ru surface content of electrocodeposited PtRu electrodes with the electrochemical quartz crystal microbalance : Implications for methanol and CO electrooxidation , 1996 .

[8]  Antonino S. Aricò,et al.  Analysis of the high-temperature methanol oxidation behaviour at carbon-supported Pt–Ru catalysts , 2003 .

[9]  S. Narayanan,et al.  Performance of Direct Methanol Fuel Cells with Sputter‐Deposited Anode Catalyst Layers , 1999 .

[10]  C. L. Aravinda,et al.  Preparation and characterization of oxides of Ni-Cu: anode material for methanol oxidative fuel cells , 2003 .

[11]  Antonino S. Aricò,et al.  DMFCs: From Fundamental Aspects to Technology Development , 2001 .

[12]  R. Savinell,et al.  Iron(III) tetramethoxyphenylporphyrin(FeTMPP) as methanol tolerant electrocatalyst for oxygen reduction in direct methanol fuel cells , 1998 .

[13]  H. Gasteiger,et al.  Methanol electrooxidation on a colloidal PtRu-alloy fuel-cell catalyst , 1999 .

[14]  H. Gasteiger,et al.  Temperature‐Dependent Methanol Electro‐Oxidation on Well‐Characterized Pt‐Ru Alloys , 1994 .

[15]  E. Ticianelli,et al.  Effect of thermal treatment on the performance of CO-tolerant anodes for polymer electrolyte fuel cells , 2000 .

[16]  U. Stimming,et al.  Catalysts for Direct Methanol Fuel Cells , 2002 .

[17]  M. Barak,et al.  Power Sources 4 , 1974 .

[18]  A. Wiȩckowski,et al.  Scanning tunneling microscopy images of ruthenium submonolayers spontaneously deposited on a Pt(111) electrode , 1999 .