Optimization of platinum dispersion in Pt–PEM electrodes: application to the electrooxidation of ethanol

Nafion® can be used as a solid polymer electrolyte in a PEM fuel cell. Direct platinization of the membrane was realized by chemical reduction of a platinum compound. The platinization procedure was modified to enhance the roughness factor and thus to improve the electrocatalytic activity towards ethanol electrooxidation. The Pt–PEM electrodes were characterized by TEM, atomic absorption analysis, cyclic voltammetry and their polarization curves for ethanol electrooxidation.

[1]  F. Hahn,et al.  Chemisorption of methanol on different platinum electrodes (smooth and rough polycrystalline, monocrystalline, and preferentially oriented), as studied by EMIRS , 1989 .

[2]  H. Nakajima,et al.  Metal electrodes bonded on solid polymer electrolyte membranes (SPE)—V. methanol oxidation on Pt—SPE electrode , 1988 .

[3]  Robert F. Savinell,et al.  Evaluation of Ethanol, 1‐Propanol, and 2‐Propanol in a Direct Oxidation Polymer‐Electrolyte Fuel Cell A Real‐Time Mass Spectrometry Study , 1995 .

[4]  Peter S. Fedkiw,et al.  In Situ Electrode Formation on a Nafion Membrane by Chemical Platinization , 1992 .

[5]  G. Scherer,et al.  Membrel‐Water Electrolysis Cells with a Fluorinated Cation Exchange Membrane , 1988 .

[6]  B. Beden,et al.  The electrooxidation of CO: a test reaction in electrocatalysis , 1990 .

[7]  R. A. Rightmire,et al.  Ethyl Alcohol Oxidation at Platinum Electrodes , 1964 .

[8]  Pierre Millet,et al.  New solid polymer electrolyte composites for water electrolysis , 1989 .

[9]  F. Hahn,et al.  “In situ” analysis by infrared reflectance spectroscopy of the adsorbed species resulting from the electrosorption of ethanol on platinum in acid medium , 1987 .

[10]  Pierre Millet,et al.  Preparation of solid polymer electrolyte composites: investigation of the ion-exchange process , 1995 .

[11]  Peter S. Fedkiw,et al.  An Impregnation‐Reduction Method to Prepare Electrodes on Nafion SPE , 1989 .

[12]  Y. Nodasaka,et al.  Structure of Pt microparticles dispersed electrochemically onto glassy carbon electrodes: examination with the scanning tunneling microscope and the scanning electron microscope , 1988 .

[13]  George E. P. Box,et al.  Empirical Model‐Building and Response Surfaces , 1988 .

[14]  H. Takenaka,et al.  Solid polymer electrolyte water electrolysis , 1982 .

[15]  Pierre Millet,et al.  Preparation of solid polymer electrolyte composites: investigation of the precipitation process , 1995 .

[16]  Karl V. Kordesch,et al.  Fuel cells and their applications , 1996 .

[17]  P. Gallezot,et al.  Oxygen reduction on well-defined platinum nanoparticles inside recast ionomer , 1996 .

[18]  Edson A. Ticianelli,et al.  Dependence of performance of solid polymer electrolyte fuel cells with low platinum loading on morphologic characteristics of the electrodes , 1991 .

[19]  Supramaniam Srinivasan,et al.  Analysis of performance and of water and thermal management in proton exchange membrane fuel cells , 1995 .