(Industrial Electrochemistry and Electrochemical Engineering Division Student Achievement Award Address) Fundamental Understanding on Cell Performance Enhancement of Flow Batteries with Serpentine Flow Field Structures

2019 ◽  
Keyword(s):  
Student Achievement ◽  
Flow Field ◽  
Performance Enhancement ◽  
Cell Performance ◽  
Electrochemical Engineering ◽  
Achievement Award ◽  
Serpentine Flow Field ◽  
Fundamental Understanding ◽  
Flow Batteries

Innovative Flow-Field Combination Design on Direct Methanol Fuel Cell Performance

2006 ◽  
Vol 4 (3) ◽  
pp. 365-368 ◽  
Author(s):  
Guo-Bin Jung ◽  
Ay Su ◽  
Cheng-Hsin Tu ◽  
Fang-Bor Weng ◽  
Shih-Hung Chan
Keyword(s):  
Fuel Cells ◽  
Flow Field ◽  
Direct Methanol Fuel Cells ◽  
Flow Fields ◽  
Cell Performance ◽  
Fuel Cell Performance ◽  
Serpentine Flow Field ◽  
Structure Of Flow ◽  
Direct Methanol ◽  
Stable Performance

The flow-field design of direct methanol fuel cells (DMFCs) is an important subject about DMFC performance. Flow fields play an important role in the ability to transport fuel and drive out the products (H2O,CO2). In general, most fuel cells utilize the same structure of flow field for both anode and cathode. The popular flow fields used for DMFCs are parallel and grid designs. Nevertheless, the characteristics of reactants and products are entirely different in anode and cathode of DMFCs. Therefore, the influences of flow fields design on cell performance were investigated based on the same logic with respect to the catalyst used for cathode and anode nonsymmetrically. To get a better and more stable performance of DMFCs, three flow fields (parallel, grid, and serpentine) utilized with different combinations were studied in this research. As a consequence, by using parallel flow field in the anode side and serpentine flow-field in the cathode, the highest power output was obtained.

Innovative Flow Field Combination Design on Direct Methanol Fuel Cell Performance

2005 ◽  
Author(s):  
Guo-Bin Jung ◽  
Ay Su ◽  
Cheng-Hsin Tu ◽  
Fang-Bor Weng ◽  
Shih-Hung Chan
Keyword(s):  
Fuel Cells ◽  
Flow Field ◽  
Direct Methanol Fuel Cells ◽  
Flow Fields ◽  
Cell Performance ◽  
Fuel Cell Performance ◽  
Serpentine Flow Field ◽  
Structure Of Flow ◽  
Direct Methanol ◽  
Stable Performance

The flow-field design of Direct Methanol Fuel Cells (DMFCs) is an important subject about the DMFCs performance. Flow-fields play an important role on ability to transport fuel and drive out the products (H2O, CO2). In general, most of fuel cells utilize the same structure of flow-field for both anode and cathode. The popular flow-fields used for DMFCs are parallel and grid designs. Nevertheless, the characteristics of reactants and products are entirely different in anode and cathode of DMFCs. Therefore; the influences of the flow-fields designs on the cell performance were investigated due to the same logic for catalyst used for cathode and anode differently. To get the better and more stable performance of DMFC, three flow-fields (Parallel, Grid and Serpentine) are utilized with different combination were studied in this research. As a consequence, by using parallel flow-field in anode side and serpentine flow -field in cathode, the most and highest power output was obtained.

Enhancement of PEM Fuel Cell Performance by Flow Control

2014 ◽  
Vol 804 ◽  
pp. 75-78 ◽  
Author(s):  
Vinh Nguyen Duy ◽  
Jung Koo Lee ◽  
Ki Won Park ◽  
Hyung Man Kim
Keyword(s):  
Fuel Cell ◽  
Flow Field ◽  
Pem Fuel Cell ◽  
Membrane Electrode Assembly ◽  
Cell Performance ◽  
Field Pattern ◽  
Battery Life ◽  
Membrane Electrode ◽  
Fuel Cell Performance ◽  
Serpentine Flow Field

Flow-field design affects directly to the PEM fuel cell performance. This study aims to stimulate the under-rib convection by adding sub-channels and by-passes to the conventional-advanced serpentine flow-field to improve the PEM fuel cell performance. The experimental results show that if reacting gases flow in the same direction as the neighboring main channels, the under-rib convection shows a flow from the main channels to the sub-channels makes progress in reducing pressure drop and enhancing uniform gas supply and water diffusion. Alternatively, if in the direction opposite to that of the neighboring main channels, the under-rib convection shows a flow from the inlet side towards the outlet side across the sub-channel as in the conventional serpentine channels. Analyses of the local transport phenomena in the cell suggest that the inlet by-pass supplies the reacting gases uniformly from the entrance into the sub-channels and the outlet by-pass enhances water removal. Novel serpentine flow-field pattern employing sub-channels and by-passes shows uniform current density and temperature distribution by uniformly supplying the reacting gas. Furthermore, performance improvement of around 20% is observed from the experimental performance evaluation. As a result, longer battery life is expected by reducing the mechanical stress of membrane electrode assembly.

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