Optimization of properties and operating parameters of a passive DMFC mini-stack at ambient temperature

Abstract An investigation of properties and operating parameters of a passive DMFC monopolar mini-stack, such as catalyst loading and methanol concentration, was carried out. From this analysis, it was derived that a proper Pt loading is necessary to achieve the best compromise between electrode thickness and number of catalytic sites for the anode and cathode reactions to occur at suitable rates. Methanol concentrations ranging from 1 M up to 10 M and an air-breathing operation mode were investigated. A maximum power of 225 mW was obtained at ambient conditions for a three-cell stack, with an active single cell area of 4 cm 2 , corresponding to a power density of about 20 mW cm −2 .

[1]  In-Hwan Oh,et al.  Recent progress in passive direct methanol fuel cells at KIST , 2004 .

[2]  Qiang Ye,et al.  In situ visualization study of CO2 gas bubble behavior in DMFC anode flow fields , 2005 .

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

[4]  Christopher K. Dyer.  Fuel cells for portable applications , 2002 .

[5]  Rong Chen,et al.  Porous current collectors for passive direct methanol fuel cells , 2007 .

[6]  Shimshon Gottesfeld,et al.  High performance direct methanol polymer electrolyte fuel cells , 1996 .

[7]  Rong Chen,et al.  A novel electrode architecture for passive direct methanol fuel cells , 2007 .

[8]  Takeshi Ito,et al.  Characteristics of micro DMFCs array fabricated on flexible polymeric substrate , 2006 .

[9]  William H. Smyrl,et al.  A Miniature Methanol/Air Polymer Electrolyte Fuel Cell , 1999 .

[10]  Giuseppe D'Arrigo,et al.  Fabrication of miniaturized Si-based electrocatalytic membranes , 2003 .

[11]  S. Srinivasan,et al.  International activities in DMFC R&D: status of technologies and potential applications , 2004 .

[12]  Shimshon Gottesfeld,et al.  Fuel cell techno-personal milestones 1984–2006 , 2007 .

[13]  Emanuel Peled,et al.  Water-neutral micro direct-methanol fuel cell (DMFC) for portable applications , 2003 .

[14]  Chao-Yang Wang,et al.  Electrochemical and flow characterization of a direct methanol fuel cell , 2004 .

[15]  V. Antonucci,et al.  Investigation of Pt–Fe catalysts for oxygen reduction in low temperature direct methanol fuel cells ☆ , 2006 .

[16]  Mohammad Ali Abdelkareem,et al.  Effect of oxygen and methanol supply modes on the performance of a DMFC employing a porous plate , 2007 .

[17]  E. Modica,et al.  Development and operation of a 150 W air-feed direct methanol fuel cell stack , 2001 .

[18]  Chaoyang Wang,et al.  Development and characterization of a silicon-based micro direct methanol fuel cell , 2004 .

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

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

[21]  A. K. Shukla,et al.  A liquid-feed solid polymer electrolyte direct methanol fuel cell operating at near-ambient conditions , 1998 .

[22]  Rong Chen,et al.  Performance characterization of passive direct methanol fuel cells , 2007 .

[23]  Christophe Coutanceau,et al.  Development of materials for mini DMFC working at room temperature for portable applications , 2006 .

[24]  Weijiang Zhou,et al.  Performance comparison of low-temperature direct alcohol fuel cells with different anode catalysts , 2004 .

[25]  Andreas Schmitz,et al.  Influence of diffusion layer properties on low temperature DMFC , 2004 .

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

[27]  Amir Faghri,et al.  Water and air management systems for a passive direct methanol fuel cell , 2007 .