Effect of anode current collector on the performance of passive direct methanol fuel cells

The effect of anode current collector on the performance of passive direct methanol fuel cell (DMFC) was investigated in this paper. The results revealed that the anode of passive DMFC with perforated current collector was poor at removing the produced CO2 bubbles that blocked the access of fuel to the active sites and thus degraded the cell performance. Moreover, the performances of the passive DMFCs with different parallel current collectors and different methanol concentrations at different temperatures were also tested and compared. The results indicated that the anode parallel current collector with a larger open ratio exhibited the best performance at higher temperatures and lower methanol solution concentrations due to enhanced mass transfer of methanol from the methanol solution reservoir to the gas diffusion layer. However, the passive DMFC with a smaller open ratio of the parallel current collector exhibited the best performance at lower temperatures and higher methanol solution concentrations due to the lower methanol crossover rate. Copyright © 2009 John Wiley & Sons, Ltd.

[1]  Fuqiang Liu,et al.  Low Crossover of Methanol and Water Through Thin Membranes in Direct Methanol Fuel Cells , 2006 .

[2]  G. Yin,et al.  Effects of ozone treatment of carbon support on Pt–Ru/C catalysts performance for direct methanol fuel cell , 2006 .

[3]  Passive air management for cylindrical cartridge fuel cells , 2007 .

[4]  In-Hwan Oh,et al.  Performance evaluation of passive DMFC single cells , 2006 .

[5]  Amir Faghri,et al.  Vapor feed direct methanol fuel cells with passive thermal-fluids management system , 2007 .

[6]  S. Fukada.  Analysis of oxygen reduction rate in a proton exchange membrane fuel cell , 2001 .

[7]  A. Faghri,et al.  A transient, multi-phase and multi-component model of a new passive DMFC , 2006 .

[8]  T. Springer,et al.  Polymer Electrolyte Fuel Cell Model , 1991 .

[9]  M. Aulice Scibioh,et al.  On the consequences of methanol crossover in passive air-breathing direct methanol fuel cells , 2005 .

[10]  Ay Su,et al.  Experiment and simulation investigations for effects of flow channel patterns on the PEMFC performance , 2008 .

[11]  Ayoub Kazim,et al.  Effects of cathode operating conditions on performance of a PEM fuel cell with interdigitated flow fields , 2003 .

[12]  Rong Chen,et al.  The effect of methanol concentration on the performance of a passive DMFC , 2005 .

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

[14]  I. Hsing,et al.  Influence of anode diffusion layer on the performance of a liquid feed direct methanol fuel cell by AC impedance spectroscopy , 2006 .

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

[16]  Hae-Kyoung Kim,et al.  Passive direct methanol fuel cells fed with methanol vapor , 2006 .

[17]  In-Hwan Oh,et al.  Effects of cathode open area and relative humidity on the performance of air-breathing polymer electrolyte membrane fuel cells , 2006 .

[18]  Ay Su,et al.  The impact of flow field pattern on concentration and performance in PEMFC , 2005 .

[19]  Fuqiang Liu,et al.  On mass transport in an air‐breathing DMFC stack , 2005 .

[20]  Angelika Heinzel,et al.  Membrane fuel cells : concepts and system design , 1998 .

[21]  Rong Chen,et al.  Two-dimensional two-phase thermal model for passive direct methanol fuel cells , 2008 .

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

[23]  Wenming Yang,et al.  Effect of current-collector structure on performance of passive micro direct methanol fuel cell , 2007 .

[24]  H. Ha,et al.  Behavioral pattern of a monopolar passive direct methanol fuel cell stack , 2006 .

[25]  Rongzhong Jiang,et al.  Effect of operating conditions on energy efficiency for a small passive direct methanol fuel cell , 2006 .

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

[27]  Fuqiang Liu,et al.  Water Transport Through Nafion 112 Membrane in DMFCs , 2005 .