Direct Methanol Fuel Cells for Automotive Power Systems

2000 ◽  
Author(s):  
R. M. (Bob) Moore
Keyword(s):  
Fuel Cells ◽  
Power Systems ◽  
Direct Methanol Fuel Cells ◽  
Direct Methanol ◽  
Methanol Fuel Cells

Water Balance in PEM and Direct Methanol Fuel Cells

2004 ◽  
Vol 2 (1) ◽  
pp. 1-8 ◽  
Author(s):  
Michael G. Izenson ◽  
Roger W. Hill
Keyword(s):  
Fuel Cells ◽  
Water Balance ◽  
Power Systems ◽  
Direct Methanol Fuel Cells ◽  
Polymer Electrolyte Membrane ◽  
Pem Fuel Cells ◽  
Electrolyte Membrane ◽  
Direct Methanol ◽  
Specific Calculations ◽  
Methanol Fuel Cells

Water management is a critical design issue for polymer electrolyte membrane (PEM) fuel cells, because the PEM must be maintained at the proper water content to remain ionically conducting without flooding the electrodes. Furthermore, portable PEM power systems should operate at water balance to minimize weight. This paper presents the basic design relationships that govern water balance in a PEM fuel cell. Specific calculations are presented based on data from hydrogen/air and direct methanol fuel cells currently under development for portable power systems. We will show how the water balance operating point depends on the cell operating parameters and show the sensitivity to off-design conditions.

Compact Direct Methanol Fuel Cells for Portable Applications: A Modeling Study

2005 ◽  
Vol 3 (1) ◽  
Author(s):  
Stefania Specchia ◽  
Ugo A. Icardi ◽  
Vito Specchia ◽  
Guido Saracco
Keyword(s):  
Fuel Cells ◽  
Power Systems ◽  
Modular Design ◽  
Direct Methanol Fuel Cells ◽  
Low Cost ◽  
Heat Removal ◽  
Market Area ◽  
Direct Methanol ◽  
Methanol Fuel Cells ◽  
Conceptual Study

Consumers demand for portable audio/video/ICT devices has driven the development of advanced power technologies in recent years. Fuel cells are a clean technology with low emissions levels, able to work with renewable fuels and capable, in a next future, to replace conventional power systems meeting the targets of the Kyoto Protocol for a society based on sustainable energy systems. Within such a perspective, the objective of the European project MOREPOWER (Compact direct methanol fuel cells for portable applications) is to develop a low cost, low temperature, portable Direct Methanol Fuel Cell (DMFC; nominal power 250 W) of compact construction and modular design for the potential market area of weather stations, medical devices, signal units, gas sensors and security cameras. This investigation is focused on a conceptual study of the DMFC system carried out in the Matlab/Simulink platform. Two different DMFC configurations were devised in which alternative components arrangements along the methanol recycle line are considered. Based on a number of simulations, the system configuration characterized by a gas-liquid separator for carbon dioxide removal placed upstream the radiator for heat removal shows the most promising results, thanks to an easier design and operability of the radiator itself.

Water and Thermal Balance in PEM and Direct Methanol Fuel Cells

2004 ◽  
Vol 1 (1) ◽  
pp. 10-17 ◽  
Author(s):  
Michael G. Izenson ◽  
Roger W. Hill
Keyword(s):  
Fuel Cells ◽  
Water Balance ◽  
Power Systems ◽  
Thermal Management ◽  
Direct Methanol Fuel Cells ◽  
Polymer Electrolyte Membrane ◽  
Thermal Balance ◽  
Operating Conditions ◽  
Direct Methanol ◽  
Methanol Fuel Cells

A key consideration for portable power systems is that they must operate simultaneously at water balance (no external water supply) and thermal balance (controlled temperature). Water and thermal management are intimately linked since evaporation is a potent source of cooling. This paper presents the basic design relationships that govern water and thermal balance in polymer electrolyte membrane (PEM) fuel cell stacks and systems. Hydrogen/air and direct methanol fuel cells are both addressed and compared. Operating conditions for simultaneous water and thermal balance can be specified based on the cell’s electrochemical performance and the operating environment. These conditions can be used to specify the overall size and complexity of the cooling equipment. The water balance properties can have strong effects on the size of the thermal management equipment required.

Progress and Perspectives in Passive Direct Methanol Fuel Cells Operating with Concentrated Methanol

2012 ◽  
Vol 7 (3) ◽  
pp. 1-7
Author(s):  
Naveen K. Shrivastavaa ◽  
◽  
Shashikant B. Thombreb ◽  
Kailas L. Wasewar ◽  
◽  
...  
Keyword(s):  
Fuel Cells ◽  
Direct Methanol Fuel Cells ◽  
Direct Methanol ◽  
Methanol Fuel Cells

Hierarchical Nanostructured Pt8Ti-TiO2/C as an Efficient and Durable Anode Catalyst for Direct Methanol Fuel Cells

ACS Catalysis ◽  
2015 ◽  
Vol 5 (12) ◽  
pp. 7321-7327 ◽  
Author(s):  
Jakkid Sanetuntikul ◽  
Kriangsak Ketpang ◽  
Sangaraju Shanmugam
Keyword(s):  
Fuel Cells ◽  
Direct Methanol Fuel Cells ◽  
Anode Catalyst ◽  
Direct Methanol ◽  
Methanol Fuel Cells

Layer-by-layer self-assembly of PDDA/PWA–Nafion composite membranes for direct methanol fuel cells

2010 ◽  
Vol 46 (9) ◽  
pp. 1434 ◽  
Author(s):  
Meng Yang ◽  
Shanfu Lu ◽  
Jinlin Lu ◽  
San Ping Jiang ◽  
Yan Xiang
Keyword(s):  
Fuel Cells ◽  
Self Assembly ◽  
Direct Methanol Fuel Cells ◽  
Composite Membranes ◽  
Layer By Layer ◽  
Direct Methanol ◽  
Methanol Fuel Cells
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