Effect of anode and cathode flow field geometry on passive direct methanol fuel cell performance

Abstract In this paper, the effect of cathode flow field geometry on a passive direct methanol fuel cell (DMFC) performance at various concentrations of methanol is studied. Three cells with perforated current collector, parallel channels and trapezoidal channels with opening to downward current collector at the cathode side are tested at 2 to 5 molar concentrations of methanol. In order to maintain equal conditions on the anode side, the trapezoidal channels with opening to upward is used in all three cells. By placing the cathode flow field pattern on the anode flow field pattern, four zones are defined and the role of these areas on the performance of each cell at concentrations of 2 to 5 molar are investigated. It is found that the zones where the anode’s open area placed directly in front of the cathode’s open area has a considerable effect on the methanol cross over, and also the zones which anode and cathode current collector’s walls placed on each other has more effect on the amount of surface contact.

[1]  Wei Yuan,et al.  Structural diversity and orientation dependence of a liquid-fed passive air-breathing direct methanol fuel cell , 2012 .

[2]  Hyuk Chang,et al.  Membrane electrode assembly for passive direct methanol fuel cells , 2006 .

[3]  Antonino S. Aricò,et al.  Investigation of passive DMFC mini-stacks at ambient temperature , 2009 .

[4]  Jian Zhang,et al.  Influence of cathode oxygen transport on the discharging time of passive DMFC , 2008 .

[5]  Shashikant B. Thombre,et al.  Effect of diffusion layer compression on passive DMFC performance , 2014 .

[6]  Yean-Der Kuan,et al.  Experimental investigation of the effect of free openings of current collectors on a direct methanol fuel cell , 2011 .

[7]  Wei Yuan,et al.  Effects of structural aspects on the performance of a passive air-breathing direct methanol fuel cell , 2010 .

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

[9]  Rong Chen,et al.  Small direct methanol fuel cells with passive supply of reactants , 2009 .

[10]  P. Ivanov,et al.  Performance optimization of a passive silicon-based micro-direct methanol fuel cell , 2008 .

[11]  Jing Zhang,et al.  Fabrication and performance evaluation for a novel small planar passive direct methanol fuel cell stack , 2012 .

[12]  Omid Gholami,et al.  Effect of non-uniform parallel channel on performance of passive direct methanol fuel cell , 2013 .

[13]  Shashikant B. Thombre,et al.  Wire mesh current collectors for passive direct methanol fuel cells , 2014 .

[14]  Suk Won Cha,et al.  Air-breathing miniature planar stack using the flexible printed circuit board as a current collector , 2009 .

[15]  Young Moo Lee,et al.  Passive DMFC system using a proton conductive hydrocarbon membrane , 2008 .

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

[17]  Antonino S. Aricò,et al.  Optimization of properties and operating parameters of a passive DMFC mini-stack at ambient temperature , 2008 .

[18]  P. Ivanov,et al.  Influence of current collectors design on the performance of a silicon-based passive micro direct methanol fuel cell , 2009 .

[19]  Amir Faghri,et al.  Methanol and water crossover in a passive liquid-feed direct methanol fuel cell , 2010 .

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

[21]  Rong Chen,et al.  A small mono-polar direct methanol fuel cell stack with passive operation , 2008 .

[22]  Jenn-Jiang Hwang,et al.  Effect of breathing-hole size on the electrochemical species in a free-breathing cathode of a DMFC , 2006 .

[23]  Jiujun Zhang,et al.  Design and testing of a passive planar three-cell DMFC , 2007 .

[24]  Jianyu Cao,et al.  Planar air-breathing micro-direct methanol fuel cell stacks based on micro-electronic–mechanical-system technology , 2008 .

[25]  A. Faghri,et al.  Effect of the cathode open ratios on the water management of a passive vapor-feed direct methanol fu , 2011 .

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