An air-breathing silicon-based micro direct methanol fuel cell with a capillary-based water drawn out structure

2009 ◽  
Author(s):  
Y.A. Zhou ◽  
X. H. Wang ◽  
X. Lin ◽  
Q. Zhang ◽  
L.T. Liu
Keyword(s):  
Fuel Cell ◽  
Direct Methanol Fuel Cell ◽  
Air Breathing ◽  
Direct Methanol ◽  
Silicon Based ◽  
Methanol Fuel Cell

Development of a Silicon Based Air-Breathing Micro Direct Methanol Fuel Cell

2007 ◽  
Vol 329 ◽  
pp. 607-612
Author(s):  
Li Ding Wang ◽  
Jun Sheng Liang ◽  
C. Liu ◽  
Gong Quan Sun
Keyword(s):  
Fuel Cell ◽  
Direct Methanol Fuel Cell ◽  
Mems Devices ◽  
Ambient Conditions ◽  
Peak Current Density ◽  
Power Sources ◽  
Air Breathing ◽  
Direct Methanol ◽  
Silicon Based ◽  
Methanol Fuel Cell

As one part of the efforts to break the bottleneck of power sources in development of integrated micro systems, a silicon based air-breathing micro direct methanol fuel cell (μDMFC) was developed in this work. By using micro-machining technologies compatible with that in processing of the other MEMS devices, the anode and cathode micro flow-field plates had been successfully fabricated on a pair of 2-inch silicon wafers. The silicon μDMFC was evaluated under ambient conditions using aqueous methanol solution with different concentrations. Results show that open circuit potential (OCP) of the μDMFC was above to 0.6 V, and by using 3mol/L methanol, the peak current density and power density of the silicon μDMFC could reach 28mA/cm2 and 8mW/cm2, respectively.

Study on a Vapor-Feed Air-Breathing Direct Methanol Fuel Cell Assisted by a Catalytic Combustor

2015 ◽  
Vol 12 (1) ◽  
Author(s):  
Wei Yuan ◽  
Hong-Rong Xia ◽  
Jin-Yi Hu ◽  
Zhao-Chun Zhang ◽  
Yong Tang
Keyword(s):  
Fuel Cell ◽  
Direct Methanol Fuel Cell ◽  
Cell Performance ◽  
Catalyst Loading ◽  
High Concentration ◽  
Methanol Vapor ◽  
Air Breathing ◽  
Direct Methanol ◽  
Catalytic Combustor ◽  
Methanol Fuel Cell

Feeding vaporized methanol to the direct methanol fuel cell (DMFC) helps reduce the effects of methanol crossover (MCO) and facilitates the use of high-concentration or neat methanol so as to enhance the energy density of the fuel cell system. This paper reports a novel system design coupling a catalytic combustor with a vapor-feed air-breathing DMFC. The combustor functions as an assistant heat provider to help transform the liquid methanol into vapor phase. The feasibility of this method is experimentally validated. Compared with the traditional electric heating mode, the operation based on this catalytic combustor results in a higher cell performance. Results indicate that the values of methanol concentration and methanol vapor chamber (MVC) temperature both have direct effects on the cell performance, which should be well optimized. As for the operation of the catalytic combustor, it is necessary to optimize the number of capillary wicks and also catalyst loading. In order to fast trigger the combustion reaction, an optimal oxygen feed rate (OFR) must be used. The required amount of oxygen to sustain the reaction can be far lower than that for methanol ignition in the starting stage.

Silicon-based Micro Direct Methanol Fuel Cell Stack to Power Portable Devices Using MEMS Technology

2014 ◽  
Vol 153 (1) ◽  
pp. 133-139 ◽  
Author(s):  
Chunguang Suo ◽  
Wenbin Zhang ◽  
Guangmin Wu ◽  
Hua Wang ◽  
Xiaohong Quan
Keyword(s):  
Fuel Cell ◽  
Direct Methanol Fuel Cell ◽  
Portable Devices ◽  
Fuel Cell Stack ◽  
Direct Methanol ◽  
Mems Technology ◽  
Silicon Based ◽  
Methanol Fuel Cell

Developing a passive air-breathing tubular direct methanol fuel cell fed with concentrated methanol

2017 ◽  
Vol 14 (13) ◽  
pp. 1100-1109 ◽  
Author(s):  
Wei Yuan ◽  
Xiaotian Xu ◽  
Fuchang Han ◽  
Guangzhao Ye ◽  
Yong Tang
Keyword(s):  
Fuel Cell ◽  
Direct Methanol Fuel Cell ◽  
Air Breathing ◽  
Direct Methanol ◽  
Methanol Fuel Cell
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