Performance improvement and CO2 removal behavior in a direct methanol fuel cell with porous flow filed made of sintered metal powder

2016 ◽  
Vol 2016.21 (0) ◽  
pp. C222
Author(s):  
Junya TANAKA ◽  
Toshio SHUDO
Keyword(s):  
Fuel Cell ◽  
Metal Powder ◽  
Performance Improvement ◽  
Direct Methanol Fuel Cell ◽  
Porous Flow ◽  
Sintered Metal ◽  
Direct Methanol ◽  
Methanol Fuel Cell

Enhanced Water Management and Fuel Efficiency of a Fully Passive Direct Methanol Fuel Cell With Super-Hydrophilic/ -Hydrophobic Cathode Porous Flow-Field

2018 ◽  
Vol 15 (3) ◽  
Author(s):  
Wei Yuan ◽  
Fuchang Han ◽  
Yu Chen ◽  
Wenjun Chen ◽  
Jinyi Hu ◽  
...  
Keyword(s):  
Water Management ◽  
Fuel Cell ◽  
Flow Field ◽  
Direct Methanol Fuel Cell ◽  
Fuel Efficiency ◽  
Methanol Concentration ◽  
Limiting Current ◽  
Porous Flow ◽  
Direct Methanol ◽  
Methanol Fuel Cell

Water management is a critical issue for a direct methanol fuel cell (DMFC). This study focuses primarily on the use of a super-hydrophilic or super-hydrophobic cathode porous flow field to improve the water management of a passive air-breathing DMFC. The flow field layer was made of an in-house copper-fiber sintered felt (CFSF) which owns good stability and conductivity. Results indicate that the super-hydrophilic flow field performs better at a lower methanol concentration since it facilitates water removal when the water balance coefficient (WBC) is high. In the case of high-concentration operation, the use of a super-hydrophobic pattern is more able to reduce methanol crossover (MCO) and increase fuel efficiency since it helps maintain a lower WBC due to its ability in enhancing water back flow from the cathode to the anode. The effects of methanol concentration and the porosity of the CFSF are also discussed in this work. The cell based on the super-hydrophobic pattern with a porosity of 60% attains the best performance with a maximum power density of 18.4 mW cm−2 and a maximum limiting current density of 140 mA cm−2 at 4 M.

Performance Improvement in Direct Methanol Fuel Cell Cathode Using High Mesoporous Area Catalyst Support

2005 ◽  
Vol 8 (1) ◽  
pp. A12 ◽  
Author(s):  
Guoxiong Wang ◽  
Gongquan Sun ◽  
Zhenhua Zhou ◽  
Jianguo Liu ◽  
Qi Wang ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Performance Improvement ◽  
Direct Methanol Fuel Cell ◽  
Catalyst Support ◽  
Direct Methanol ◽  
Fuel Cell Cathode ◽  
Methanol Fuel Cell ◽  
Cell Cathode

Direct Methanol Fuel Cell Battery Replacement Program

2011 ◽  
Author(s):  
Timothy Hall ◽  
Corey Grice ◽  
Bogdan Gurau ◽  
Paul McGinn
Keyword(s):  
Fuel Cell ◽  
Direct Methanol Fuel Cell ◽  
Direct Methanol ◽  
Methanol Fuel Cell
Sign in / Sign up

Export Citation Format

Share Document