A micro-direct methanol fuel cell stack with optimized design and microfabrication

This paper presents a micro direct methanol fuel cell (mu DMFC) stack with the advantages of compact structure and simple fuel delivery. The mu DMFC stack consists of two mu DMFC cells stacked one by one with the anode plate shared. The dimensions of the flow channels are optimized by modeling and simulation. Microfabrication and PDMS assembly are used to implement the mu DMFC stack. Experiment results show that the mu DMFC stack generates a power density of 12.71 mW/cm(2), 39.3% higher than that of a mu DMFC cell, at the cost of only 23% increase in volume. (C) 2007 Elsevier B.V. All rights reserved.

[1]  Zhaoying Zhou,et al.  Study on a PZT-actuated diaphragm pump for air supply for micro fuel cells , 2006 .

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

[3]  Suk Won Cha,et al.  Design and fabrication of a micro fuel cell array with “flip-flop” interconnection , 2002 .

[4]  Young Ho Seo,et al.  MEMS-based direct methanol fuel cells and their stacks using a common electrolyte sandwiched by reinforced microcolumn electrodes , 2004, 17th IEEE International Conference on Micro Electro Mechanical Systems. Maastricht MEMS 2004 Technical Digest.

[5]  Minoru Umeda,et al.  Methanol electrooxidation at Pt–Ru–W sputter deposited on Au substrate , 2004 .

[6]  Kai Sundmacher,et al.  A model for the liquid feed direct methanol fuel cell , 1999 .

[7]  Sydney S. Weinstein,et al.  Flip/flop , 1993 .

[8]  Evan O. Jones,et al.  Microfuel processor for use in a miniature power supply , 2002 .

[9]  Ruy Sousa,et al.  Mathematical modeling of polymer electrolyte fuel cells , 2005 .

[10]  U. Wagner,et al.  Experimental analysis of water management in a self-humidifying polymer electrolyte fuel cell stack , 2004 .

[11]  S.F.J. Flipsen,et al.  "Power sources compared: the ultimate truth?" , 2006 .

[12]  Ned Djilali,et al.  THREE-DIMENSIONAL COMPUTATIONAL ANALYSIS OF TRANSPORT PHENOMENA IN A PEM FUEL CELL , 2002 .

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

[14]  R. O’Hayre,et al.  Fuel Cell Fundamentals , 2005 .

[15]  A silicon-based micro direct methanol fuel cell stack with compact structure and PDMS packaging , 2007, 2007 IEEE 20th International Conference on Micro Electro Mechanical Systems (MEMS).

[16]  Chang-Jin Kim,et al.  A degassing plate with hydrophobic bubble capture and distributed venting for microfluidic devices , 2006 .

[17]  T. Zhao,et al.  A palladium-alloy deposited Nafion membrane for direct methanol fuel cells , 2003 .

[18]  Sanjeev Mukerjee,et al.  Electrocatalysis of CO tolerance in hydrogen oxidation reaction in PEM fuel cells , 1999 .

[19]  Xinping Qiu,et al.  A micro direct methanol fuel cell using PDMS assembly technology , 2005, The 13th International Conference on Solid-State Sensors, Actuators and Microsystems, 2005. Digest of Technical Papers. TRANSDUCERS '05..

[20]  Yasuo Nakajima,et al.  STUDY OF PERFORMANCE IMPROVEMENT IN A DIRECT METHANOL FUEL CELL. , 2002 .

[21]  Masayoshi Esashi,et al.  MEMS-based components of a miniature fuel cell/fuel reformer system , 2004 .

[22]  Lingyan Zhong,et al.  Design, fabrication and testing of a silicon-based air-breathing micro direct methanol fuel cell , 2006 .

[23]  Suk Won Cha,et al.  The scaling behavior of flow patterns: a model investigation , 2004 .

[24]  E. Sakaue,et al.  Micromachining/nanotechnology in direct methanol fuel cell , 2005, 18th IEEE International Conference on Micro Electro Mechanical Systems, 2005. MEMS 2005..